Still Camera Systems
Still camera systems are broadly divided by two classes:
The biggest decision a photographer has to take is whether to shoot on film or digital. Quality-wise, both are on par. The rule of thumb is: Test what you can find, look at the results, and stick to one format.
Film vs Digital
Advantages of Film over Digital:
- Cheaper initial investment
- Cheaper lens options
- Sturdier and not easy to break
- Low maintenance
- Some cameras are fully manual and don’t need batteries
- Having a limited number of shots per roll might make the photographer think more prior to clicking
- Will stay with you longer
- Idiosyncratic image quality using different film stock
Disadvantages of Film over Digital:
- Limited dynamic range unless you use the best stock. Then it’s 50-50.
- Poor at higher ISO ratings
- Limited availability of professional film
- Expensive to buy, develop, process, scan and clean images. Long term, film is more expensive than digital
- Less environment-friendly
- Time-consuming. Time between taking a shot to seeing the finished product is from a few seconds (in Polaroid, which is mostly extinct), to days
- Unless you are perfect in every step of the way, you cannot be sure what you are seeing in the end is what you have shot
- Has lower resolution than digital. A 15MP DX/APSC easily matches 6×7 medium format. An IQ180 back beats 8×10 film
All said and done, there are proponents for both film and digital. I too used to shoot both, but due to limited options in Mumbai, I rarely shoot film any more. The control I gain over the image till the print, plus the fact that it is cheaper and environment-friendly, make digital shooting a no-brainer for me. Film is for those with lots of money and time in their hands. When I have both, I might start shooting in film again.
Size of the medium
Camera systems come in various sizes. The most famous ‘size’, and the one every other format is judged or compared to, is 35mm film. 35mm has been around for a 100 years, and was standardized in 1909. The most well-known of manufacturers to adopt this format, and still reigning king, is Leica. The size of the frame is 36x24mm. Modern top-of-the-line DSLRs and the Leica M9 have a sensor this size, and is called a full frame sensor. Lenses are referred to as 35mm equivalents so that one might instantly know the area of coverage if it were a 35mm lens (assuming one has shot with 35mm before!).
Most consumer grade DSLRs have a smaller sensor, either an APS-C (Canon and others), DX (Nikon), 4/3 (four thirds) system among others. Most of these sub-35mm frame sensors offer quality on par with 35mm film, if used with the right lenses. Check this image out for basic sensor sizes in the 35mm world:
If you look at the biggest size, it says ‘medium format’. Most people only know of 35mm or smaller. But there are bigger sizes.
If 35mm is around 1.5×1 inches, then medium format system begins at 6×4.5 inches. Medium format film systems have two types of film rolls: 120 film and 220 film. 220 is just a longer roll, and is less common. The same 120 roll is used for different format sizes, which are as follows:
- 645 – 15 shots
6×6 – 13 shots
6×7 – 10 shots
6×9 – 8 shots
6×17 – 4 shots
This means, you can mix and match various accessories depending on the kind of work you do:
Digital backs allow medium format systems to be used even today to get a higher resolution than full frame 35mm DSLRs. These backs have megapixels from 20MP all the way to 80MP as of this post, with signs of even bigger things to come.
When are these cameras used? Whenever a bigger resolution is required. This includes studio and portrait photography, architectural and landscape photography, and commercial photography. The one thing these cameras are not used much for is journalistic or street photography.
One type of medium format system that is light and can be used for street photography is the Twin lens reflex camera system:
If you thought medium format is huge, then wait until you read this. The biggest format sizes in photography fall under the category: Large format photography.
Large format systems begin at 4×5 inches and go all the way up to 20×24 inches. The most common sizes are 4×5, 5×7 and 8×10. Each film is one sheet (not a roll like 35mm or medium format). The most widely used design is the View Camera design:
You’ve probably seen these beauties from old photographs. Yes, they are still in use today, by those who want the ultimate in quality for landscape, portrait and architecture work. Medium format digital backs are also used with these cameras to get the best resolution.
The greatest advantage of large format view camera design is the fact that it allows for the greatest manipulation of the image, which is not possible with 35mm or medium format systems. These include:
The biggest disadvantages to these systems are their size and weight, plus the fact that setting up exposures is time consuming and tedious. Any weakness or lack of skill in technique will easily destroy a picture in this format, whereas 35mm and medium format systems often tend to help correct some human errors. Large format systems are pure photography.
There are even cameras that don’t need lenses, like Pinhole cameras. However, these cameras are not very versatile and their use is limited to certain types of photography under certain conditions. But it has its fans!
Finally, for your viewing pleasure, one of the most famous and greatest of images created by the master himself, Ansel Adams, using a large format camera system, The Tetons and the Snake River (1942):
All images courtesy Wikipedia.org.