Here is a brief tutorial on Scanning Tips with Epson flatbed scanners, but it applies to any scanner we use.
To make a digital image which looks as analog as possible - as smooth as possible - we need to work around some of the default settings provided by the scanning software.
With my consumer-grade Epson flatbed scanners, the green channel is slightly sharper than the red and blue channels. Read Scanning the Green Channel for Optimum Resolution to learn more.
Carbon pigment prints are made with an inkjet printer, using a graded set of pure carbon pigments instead of colored inks. They look beautiful and unlike ordinary inkjet prints will last as long as the paper holds together. These images are considerably more fade resistant than archival selenium-toned silver prints.
The Piezography K7 Carbon ink set consists of 7 graded inks made of carbon pigment. The results far exceed the quality of typical printer inks (3 gray shades) and general-purpose profiles designed for making color photographs. Unlike profiles made with the open-source QTR tool set which are based on only 21 measurements, Piezography profiles are measured and linearized using 256 steps.
The difference is substantial: Piezography profiles are completely linear, with no banding, bumps or gaps in the tonal scale. Subtle tones in the shadows are not compressed to pure black. Highlight tones are not clipped to white. You really have to see the difference in print quality to believe it. With this approach, your printer will deliver better image fidelity than a typically calibrated monitor (see The K7 standard and monitor display systems and related articles on the Piezography blog)
I previously used the MIS Eboni inks and relied on the Quadtone RIP documentation and forum. Compared to that approach, Piezography offers the following advantages:
According to Piezography, their new Ultra HD Matte Black Carbon Ink is "the darkest pure carbon matte black ink that has ever been formulated for use in photo inkjet printers."
I really prefer matte prints: once behind glass, they have the same dynamic range as glossy prints but have no interference from ambient lighting. Their new ink is really dark !
Toned monochrome images often have a greater sense of depth than plain-old black and white. This is especially true of portraits. If you like to make monochrome prints using standard OEM inks, you can give them a "toned" appearance: the blacks are black, the whites are white - but the grays are varying shades of brown, gold, blue, violet, etc.
Many of the great classic photographers toned their monochrome images in the darkroom and thus avoided the harsh and "gritty" quality of pure black and white. They printed with Platinum and Palladium and soaked their Silver prints in baths of Selenium, Gold, etc. Today using digital methods we can render a photograph with any tone we like, choosing the best color for each image.
With this method, every image can receive its own distinct toning with a 16-bit high-fidelity palette of shades. Visit Photoshop Fill Layer for more information and learn how to do this yourself.
Attention GIMP Users: you can do the same thing with the GIMP Colorize tool. Note that the standard distribution of GIMP still works with 8-bit images only. I prefer Photoshop (and 16-bit support is one of the reasons), but GIMP is free.
I love my second-hand 1970's Sinar P view camera. You can easily locate one on eBay, where there's an abundant supply of used Sinar equipment. That's where I found mine. The Sinar is what all the other view cameras would be... if they could.
Everything is geared. Every adjustment is smooth and silky. There are very few locking mechanisms, since the gears are so well made, they just stay where you leave them. Did I say Made in Switzerland ?
The Sinar has asymmetric or yaw-free movements. It stays in focus when you tilt, swing, rise and shift. With other view cameras, you have to tilt, refocus, then raise or lower the camera - over and over again. With the Sinar, you just focus and dial-in the adjustments until everything is right. It's heavenly !
The Sinar is a modular system camera. If you want to add or replace things, you can. Turn your 4x5 camera into a 5x7 or 8x10 camera ? No problem. Just replace the bellows and the back. Search for a conversion kit, also called format change set, conversion set, etc). The kits are smaller, lighter and cheaper than cameras. Because Sinar is/was the workhorse of choice for so many professionals, there is usually plenty of used equipment to choose from, in excellent condition. Igor's Camera Exchange carries a lot of Sinar equipment and expertise.
I also have a lovely and ancient 5x7 Kodak 2D, a wooden field camera (left). I found it at an auction and had a new bellows put on. It works fine again. On the left you can see what someone's fully restored 2D looks like. I wish my 2D were as pretty, but it works fine just the same. It's the latest in 1920's technology !
The 5x7 Kodak's light weight and folding design makes it great way to carry around. Unlike most folding cameras, the Kodak hybrid design lets you leave a lens on the camera at all times, which makes things easy and fast when setting up.
When maximum portability is required, I use a 4x5 Tachihara Wooden Field Camera (right). It's very light and folds quite small. With its red bellows and brass fittings, it attracts curiosity and draws onlookers like a magnet. Using a 200mm Nikkor M lens, it's a treat to walk around and shoot a wide variety of subjects. You can save time and economize space by leaving the lens on the camera, reversed.
If you would like to see what some other Large Format cameras look like, have a look at this thread entitled Show Off Your Camera on the Large Format Photography Forum. You may be surprised to see how many people use them - and how many different kinds of Large Format cameras exist.
Ordinary cameras have lenses that are mounted straight ahead, so they look straight ahead only. That's fine for many subjects but view cameras let us adjust the plane of focus at the front and rear of the camera. We can focus along a complex plane and make photos that are either impossible or arduous with ordinary cameras.
Click here to see some photos that were made using view camera movements. Some of these adjustments can be created after image capture with editing tools, but not all. With a view camera we can combine adjustments creatively while composing the image. That's quite different from repairing mistakes in post-processing.
For a discussion of some favorite lenses for Large Format cameras, click here. We discuss vintage and barrel-mounted designs, portrait lenses, modern lenses for use in the field - as well as macro and process lenses and the Sinar Copal Shutter.
Included are sample image galleries for Rodenstock APO Sironar-S, Rodenstock Macro Sironar, Voigtlander Braunschweig Heliar, Carl Zeiss Jena Tessar, Fujinon A, Fujinon C, Fujinon T, Fujinon SFS, Nikkor M, APO Nikkor and more. You can see that differences between them are often... exaggerated.
We also discuss barrel-mounted lenses, the Sinar Copal Shutter and blur rendition or bokeh - including a 4-way bokeh comparison of vintage and modern designs.
Don't purchase a set of filters for every "odd-ball" size (and carry them into the field). If you get get an inexpensive step-up ring you can save money, space and weight.
Among lenses for large format of recent manufacture, the majority take 67mm filters. 52mm is also a popular size - my favorite size in fact. Almost all my lenses take filters that are either 52mm or 67mm, but not all of them... so I fixed that.
Purchasing 49-52mm adaptor for my 150mm Rodenstock and a 55-67mm for my 300mm Fujinon A, I now need only 2 filter kits: 52mm and 67mm filters. You can do the same with your lenses too. You'll need a lens cap for each lens that you convert. They are very affordable and readily available.
A 150mm lens needs 150mm of bellows draw - at infinity. As we focus closer, more bellows extension is required and more exposure is required. How much more ? For perfect exposure, we want to know. For a lens of given focal length and bellows with a specific maximum extension, how close can we get to the subject ?
If we want a certain degree of magnification (say 1:3) and we know the focal length of the lens, how much bellows extension do we need ? With a lens of given focal length and a bellows of known maximum extension, how much magnification can we get ? At 1:1 magnification, a 150mm lens requires 300mm of bellows extension. How do we compensate for exposure as bellows extension increases ?
Click here for a page which provides formulas for bellows extension.
If you don't care to memorize the formulas for bellows extension and film reciprocity, consider this wonderful application for the iPhone: Reciprocity Timer by Pump Interactive. It really works !
|Film Size||Useable Size||Size @ 1600dpi||Size @ 2000dpi|
|4 x 5||3.75 x 4.75||46 MP||68 MP|
|5 x 7||4.75 x 6.75||82 MP||122 MP|
|8 x 10||7.75 x 9.75||194 MP||288 MP|
If we want to make large prints from 35mm or even Medium Format film (6x6, 6x7, 6x9), then a consumer-grade Epson scanner is going to be rather inadequate once we make an enlargement greater than 6x. For smaller formats, we really need a dedicated film scanner, a drum-scanner or a high-end flatbed: that's another discussion.
|Film Size||6X Enlargement|
|4 x 5||24 x 30 inches|
|5 x 7||30 x 42 inches|
|8 x 10||48 x 60 inches|
For certain professionals, equipment purchases in the thousands of dollars amount to a business investment, like a truck or an office. For the rest of us, even a humble wooden camera with a 50-year old lens is capable of outstanding image quality, on a budget and requires no periodic upgrade or replacement.
Here is a family portrait sized at 32x40 inches, made from a 4x5 negative.Here is a photo I made recently with a 1930's Kodak 2D: the detail available from a 5x7 negative is impressive. An 11x14 print is barely a 2x enlargement !
Of course, 5x7 still falls short of 8x10: here's an 8x10 sample image with detail section - made with an 8x10 wooden field camera. It puts the smaller formats to shame. In the photo at the top of this page, Ansel Adams is seen adjusting an 8x10 camera, perched atop his truck.
The normal range of an ordinary photographic subject, however, is generally considered to be 7 stops, or 2.1 in log terms. The middle gray of this range is 1.05, which translates to a reflectance of about 9%. If the geometric center of the normal range is considered to be middle gray (which can be debated) the standard gray card is a full stop too light in value."
In other words, the 18% standard is only appropriate for shooting subjects whose brightness range is 5 stops: black ink on white paper under copy lighting. Kodak's 18% gray card was designed for that. When shooting outdoors, Kodak tells us to increase exposure. Otherwise an the 18% card will give an inappropriate reading.
Unlike black ink on white paper, normal subjects have a 7-stop range. A simple "Zone V" gray card reading with a reflection meter will fail: we will underexpose by 1 stop. Why ? Because the middle of a 7-stop range is 9% gray, not 18%. We should place the 18% card on Zone VI, not V.
Some Zone System teachers work around the flaw inherent with use of an 18% gray card, by recommending that "shadows" be placed on Zone IV (instead of Zone III). That works only if our subject contains something we can meter that should be placed on Zone IV: a white birch tree in the shadows ? a black horse in the shadows ?
To determine basic exposure, Phil Davis recommends an incident meter reading with the meter set at 2X the ISO: we place the meter in the shade and point it towards the camera. See Beyond The Zone System, 4th Edition, "Metering for the Incident System" pp 134:
Since I rate TMY and HP5+ at 200, when using this approach to metering I set my incident meter at 400 and make an incident reading in the open shadows.
Like this photograph not every subject has easily recognized zones. It can often be challenging to determine which values belong where. Incident metering solves that problem. We simply measure the light itself: there's no need to identify any zones.
I used the Zone System for decades, but find this method simple, fast and reliable
Click on the bull's eye at right to view it at full size. Can you see all 50 steps ? If your monitor is calibrated properly, it should appear perfectly smooth along the entire tonal scale. If not, your monitor needs calibration. It's not good enough to discern a step-wedge with only 10 or 20 steps: for high fidelity, we need a lot more. Using 100 steps is better, but 50 is a good starting point.
Don't be surprised if you can't distinguish all 50 tones, especially at the dark end of the scale, even after profiling your monitor. Consumer-grade displays can't reveal the low values because they are optimized for high contrast, brightness and saturated colors, not for optimal rendering. To see all the tones, we need a professional grade monitor like like Eizo or NEC SpectraView. For further discussion, see The K7 standard and monitor display systems on the Piezography blog.
Even if we don't want to purchase a professional-grade monitor, we can calibrate our consumer-grade monitor with a dedicated calibration tool and software. If you intend to make prints, be sure to choose a tool that lets you adjust the brightness (luminance) of your monitor, to more closely match the properties of your printing paper. If not, you end up wasting time and materials. These tools change frequently. For a current list of recommended monitors and calibration tools, see the Chromix web site.
At right is an image which can tell you if your monitor and printer are reasonably color-calibrated and profiled. Click on it to see it full-sized. You should be able to see all the shades of all the colors. Can you see the purple rocks in the fish bowl ? Is there plenty of detail in the shadows of the sand dunes ?
Now print these images on your printer and see if the final results looks like what you see on your monitor. Ideally, they should match, very closely. If they don't match, then perhaps your monitor is off or your printer needs to be profiled... Probably both !
Believe it or not, you actually need your own custom profile for every combination of printer/paper/ink that you use. The same ink has a unique response to every different kind of paper - and every printer is unique. They are mechanical devices, subject to variation. Just like musical instruments, they need to be tuned up, all the time.
Printer manufacturers like Epson now make profiles for their own printers/inks/papers freely available for download and tools like Photoshop allow you to print your images with the profile of your choice. These are not as good as getting your own profile, but they're a great place to start and you can't beat the price ! It's hard to get things right, even with all the right tools. Without a calibrated workflow, it's almost impossible !
For best results with color printing, get someone like CHROMiX to make profiles for you. If you only print with one paper, you only have to get one profile made when you get a new printer. If you're printing black and white exclusively, use Piezography. If you don't want to have a custom profile made, then at least get one of the profiles from the public domain. Thanks to InkJetArt.com for the test image, which comes from Bill Atkinson.
Even if your monitor has been recently calibrated and you are printing with a custom profile for your printer/paper/ink, you may still end up struggling to match your prints to what you see on your monitor. Why? Because LCD monitors are much brighter than paper and manufacturers are making monitors brighter with each new generation. When editing photos to be printed, we need to work at the brightness level of paper.
If you have a light meter, you can see for yourself that bright office illumination is such that a white piece of paper, or a white wall, gives an Exposure Value or EV, around 9. Actually, EV 9.3 is around 80 cd/m2, so that's good level for digital printing if your photos will appear in a brightly lit office or gallery. Many homes (and some galleries) are darker than that, more like EV 8, 7, or 6 or lower. We need to lower the brightness of our monitor to match the brightness level of our intended display area.
If you don't have a light meter you can use one of the many phone apps, like Luxi. Be sure to use the value for ISO 100, since that is the standard.
Typical LCD monitors don't do well at these levels: they are designed to be brighter than standard office walls. That's why print imaging specialists don't use consumer-grade equipment. Instead they use monitors like Eizo and NEC SpectraView, which are designed to perform at paper brightness.
Here's a superb video presentation from Andrew Rodney: Why Are My Prints Too Dark ?. Here's a nice article on the Shutterbug web site, entitled Are Your Prints Too Dark ? Here's another one, by Pat Herold of CHROMiX. It's called My Printer Is Too Dark on the CHROMiX Color Wiki.
In order to make Inkjet photo papers look whiter, manufacturers not only bleach them, they add OBAs: Optical Brightening Agents. Brighteners are commonly added to laundry detergents to make the clothes appear cleaner. When exposed to daylight (which contains UV light), the OBAs luminesce. They emit blue-white light. The brighter the whites, the deeper the blacks look by comparison. Sounds great, no ?
The problem is that under indoor lighting, they don't luminesce, so your images look dull. With less blue, the same image suddenly looks pink. This effect is known as metamerism, or color shift: your print looks different, depending on where you view it. While harmless for family snapshots, it's unacceptable for Fine Art prints. Traditional Silver-based photographs don't suffer from Metamerism - and neither should a good inkjet print.
To make matters worse, OBAs fade over time. Even if the image looked right under daylight, it starts to look wrong eventually. The print you spent so much effort to make, is slowly replaced, so to speak, with something else.
Not all papers have OBAs: some are made with 100% Cotton Rag, have no OBAs and exhibit no color shift. Two papers I recommend are Epson Hot Press Natural and Premier Smooth Hot Press. Another brand I really like is Canson Infinity Museum Quality 100% Rag papers. Be sure to look for papers which have no OBA's. Canson writes "No Optical Brighteners" right on the front of the box. I like their Rag Photographique: it's very smooth, 100% Rag, has no OBAs and a great color.
To see how different papers and inks fade and change over time, see Aardenburg Imaging. Mark McCormick-Goodhart is a first-rate scientist and a world class expert in the field of image permanence.
You will love Kodak TMAX 100, TMAX 400 and Ilford FP4+ and HP5+ films. These films have long straight response curves, which means they give realistic detail throughout the tonal scale. They also have a very linear response to changes in development time, which makes them easy to use in both high and low contrast lighting.
If you are familiar with the Zone System, this means that they are easy to "expand" and "contract" with changes in development. Ilford offers their film in a wider variety of sizes than Kodak and at lower prices too. Lately, I use Ilford HP5+.
Tabular grain films like Kodak TMax and Ilford Delta have grain that is flat, or tabular - rather than round. The result is a cost savings for the manufacturer, because a thinner layer of Silver is required. Tabular films require more sensitizing dye and thus require longer washing times to remove the dye. Traditional films like Tri-X, Ilford FP4+ and HP5+ need less washing, because there is less dye.
D-23 has only 2 ingredients, but produces clean negatives with fine grain, excellent tonal separation and good film speed. It's so simple, you can mix it fresh every time. There's no need for a stock solution - nothing to expire on the shelf and surprise you.
It's very similar to D-76, but contains no Hydroquinone (and no Borax). As a result, it works a bit more slowly, with less danger of "runaway" high values.
Ansel Adam's classic image "Winter Sunrise from Lone Pine, 1944" was developed in D-23. Click here to read more about D-23 and his lovely photograph.
D-23 is a one-bath developer. It is not the same as Divided D-23 or DD-23, a 2-bath formula. Looking for Divided D-23 ? See this article.
You can make your own Odorless Stop Bath using Citric Acid. The Kodak SB-8 formula calls for 15 grams per liter, or 1/2 oz per quart. Or you can also use plain water for stop bath if you like. Using an acid stop bath, development is stopped instantaneously. Using water, it is stopped also, just not as abruptly. I use a weak solution of Citric Acid: 1 teaspoon per liter. Citric Acid is very cheap, harmless and... odorless.
|Ammonium Thiosulfite||800 ml||160 ml|
|Sodium Sulfite||60 g||12 g|
|Sodium Metaborate||5 g||1 g|
|Water to make||1 liter||1 liter|
(If you use a Hypo-based fixer, you can easily make your own washing aid: just use a teaspoon of Sodium Sulfite per liter of water and toss it when you are done.)
According to Anchell and Troop, in The Film Developing Cookbook, Alkaline Fixers have the following advantages over more traditional Acidic formulas:
The T-3 Alkaline Fixer formula is intended to be diluted 1+4. Instead of making stock, you can making a working solution by dividing the amounts by 5.
Kodak adds a magenta sensitizing dye to its TMAX films. Depending on your water and other factors, that dye can be hard to remove with ordinary fixing and washing. Do not prolong the time in the fixer: that will not remove the stain. Instead, rinse your negatives briefly in water after fixing, then soak them in a 10% solution of Sodium Sulfite for around 10 minutes (1 teaspoon per liter of water). Then rinse and wash normally.
Sodium Sulfite is the active ingredient in Film and Paper Washing Aid: if you use an acid fixer, you will need that anyway. If you use an alkaline fixer a washing aid is not required, but a soak in Sodium Sulfite will remove the magenta stain if necessary.
A Dish Rack Film Washer costs only a few dollars. Your film just soaks, in a bunch of standing water. There is no need for a fancy syphon or drain system: Just let the film soak and replace the water now and then. Save the water and let diffusion do the work for you. You can use a similar technique to wash roll film too.
Photo trays are great for developing prints, but you can do things better - and cheaper - with items available almost anywhere. Plastic Food Containers are more affordable, use less chemistry, prevent scratches and require less room. Once you try them, you will wonder why you ever used traditional "Photo Trays".
Once you start using something like this ATN Viper Night Vision Monocular, you will have a wonderful time developing, loading and unloading black and white film in the dark. You can see everything, without fogging the film. If you're cramped into a small space, there's no chance of knocking things over.
You can perform Development by Inspection (DBI), not in the old fashioned way (where you get only a brief peek under a dim green bulb), but throughout the entire process: development, stop bath, fix, etc. You can do tray development with ease, with far fewer scratches and with greater confidence that things are turning out right. This tool pays for itself - the first time you use it !
Important Note: As development proceeds, the film looks darker and darker. If you examine only the emulsion side, you will get the erroneous impression that development has proceeded too far, too quickly. To determine development, do not judge the emulsion side. Examine the shiny side of the film. Be sure to practice before risking any important work and use your darkroom timer too.
There are many kinds of Infra Red Night Vision viewing devices and this one is simple and affordable. If you can't see the ATN Viper on the Optics Plus web site, try this eBay search.
If you handle film, make sure to keep your finger tips clean. It's easy and affordable to clean them with a bit of Isopropyl Rubbing Alcohol on a clean cloth or paper towel. Clean your fingertips before loading sheet film. Clean them before unloading and developing. Clean them before hanging film to try. Clean them before scanning film. You'll be glad you did !
You can scan your negatives with an affordable flatbed scanner like the Epson V750 and the Epson drivers which ship with the scanner. A 4x5 inch negative, scanned at 2400 dpi (samples per inch), gives a 115 megapixel image. A 5x7 inch negative, scanned at the same resolution, gives a 200 megapixel file. Is that enough ?
At such high resolution, image fidelity is very good and the tones are... rich ! Tiny JPG files, viewed on the monitor, just can't convey the feeling. An 11x14 image made from one of these negatives is truly lovely.
A 4x5 image, scanned in 48-bit Color at 2400 dpi, gives you a 660 MB file... and that's before you make any adjustments ! If you work with large image files - but don't have a super computer with tons of RAM - here's a great video tutorial from On Landscape called Turbocharge Your Photoshop. It shows you how to work with a small copy of your image. You perform all corrections as adjustment layers on the small "guide file" version of your image.
The "guide file" can be as small as you like - a tiny fraction of the original size - and your humble machine will have no problem with it. When you are done, you magically transfer the adjustment layers to the original. With this technique, an older machine with less RAM can easily be used for working on scans of 4x5, 5x7 and 8x10 negatives and a newer machine can work on large file much more quickly and easily.
After sharpening an image, strange artifacts often appear at the high and low ends of the tonal scale. These artifacts can make our images look artificial, contrived and ugly. Here's a simple method for Photoshop that works well for monochrome as well as color: sharpen the middle tones only.
Some images automatically look sharper than others: because of visual cues, they convey an impression of sharpness. See Two Barns: One Sharp, One Not for more explanation.
Carbon Copy Cloner lets you schedule tasks to back up your files - from one disk to another - as many disks as you like, as often as you like. Back up all your files, or copy only what has changed. Move a copy of your digital files to a backup disk. Back up your OS X system files to another disk. Copy your large Photoshop files to another disk. I schedule these tasks to run in the middle of the night, while I'm sleeping. It's much better than Apple's TimeMachine. It's shareware: you send a voluntary donation if you like it.
This tripod is neither the largest, smallest, heaviest or lightest - but the Bogen 3021 BN Pro is an affordable all-around solution. It's built strong enough and light enough. It's not made of carbon fiber but unless you are a trekker... who cares !
I like the Manfrotto 3275 410 tripod head, which is rated for holding cameras up to 11 pounds. It lets you make geared fine adjustments in 3 directions, independently. It's small, light and strong. It's a treat to make adjustments this way: there is no drift. I use it with my wooden field cameras which are light in weight.
For heavier equipment, I use a Manfrotto 229 tripod head. It's rated up to 16 pounds and has no problem holding a Sinar P with 5x7 back, extension rails etc.
Here's a cold-weather tip: wrap some pipe insulation around the legs and hold it down with some inexpensive duct tape. This will keep your hands warm when you carry the tripod. Pipe insulation is very inexpensive, but you will find this very helpful in winter time. It also helps if you want to carry the tripod on your shoulders: it's soft on the body.
A leveling head like the Manfrotto 438 sits just below the tripod head (see yellow arrow). You get a level platform without having to adjust the legs of your tripod. This piece of equipment doesn't weigh very much, but makes life much easier - especially when shooting in the field, where the ground is rarely level.
On the right you can see the leveling head in action. The tripod itself is not level - as the red line shows - but the tripod head is level, because we have adjusted the leveling head beneath it.
With such an arrangement, we can move the 3 gears of the 410 head in any direction we like and we don't have to correct anything. To adjust the leveling head, just loosen the lever and use the bubble level. It's much faster than changing the length of the tripod legs. If you've tried to work with a tripod that isn't level, you'll appreciate this improvement.
To see a nice Youtube video about the Manfrotto 438, click here.
Some photographers buy expensive cases and packs to carry their gear. I prefer a canvas bag and a beverage cooler. The Sinar P folds down small enough to go into the bag, upside down. The Sinar is built like a tank. The only thing it needs, is a carrying strap and that's what the bag is for. Everything else goes into the cooler, which has a nice sturdy strap to go over your shoulder.
The beverage cooler keeps the equipment cool in summer and warm in winter... How does it know ? Even more importantly, it looks like a beverage cooler, to anyone who might see it in the car. Some people like to flaunt the name of their camera, as a status symbol. I prefer the safety of my gear looking like nothing more than a case of soft-drinks.
Note the pipe insulation on the tripod legs, held on with duct tape. Pipe insulation is very light in terms of additional weight, but vital when shooting in cold weather: it can keep your hands from freezing when you carry the tripod !
Try this affordable and helpful Shutter Speed app for the iPhone. It listens to your mechanical shutter and measures the actual speed. It may not be as accurate as the (now discontinued) Calumet Shutter Tester mentioned below, but it's accurate enough. If you want to purchase an add-on light sensor, it will give you very accurate results.
I tested my old #4 Alphax Shutter with this app. The shutter is very close to its old-fashioned speeds of 1/2, 1/5, 1/10 etc. That's good to know !
Thanks to Boston-based Architectural Photographer Peter Lewitt, you can see the manual for the Fidelity Calumet Digital Shutter Tester, which is no longer offered by Calumet Photo. The Shutter Tester allows you to test the shutters on a variety of cameras and lenses. Even though it is no longer sold, you can click here to read the manual. Perhaps you can purchase one on the used market.
When shooting in Black and White, many people have been taught to use a Red or an Orange filter, to darken the sky and clear the haze. Sometimes, this can be the ideal solution, but rarely. Why ? Because red and orange filters not only remove blue light from the sky: they also darken the green light in vegetation.
Unless you want a vivid look with ink-black skies, it's better to use a polarizer - and perhaps a weaker filter. With a polarizer, you can control the amount of darkening,
while maintaining a normal balance of colors. It's great for color photography for that reason. If you need even more richness in the clouds, then reach for a medium yellow filter, or a light orange filter and place it
on top of the polarizer. That's how
this image was made (on 8x10 film). Note the tones in the grass and the trees: the yellow filter has actually
enhanced the details. If you really want to go all the way, then a red filter, or a red filter + polarizer, will give you the strongest results.
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