FILM VS. DIGITAL
The Battle Royale: Film vs. Digital. Grain vs. Noise. Sensor
vs. Negative. Matter vs. Data. The Dark Knight vs. The
Hobbit. RED vs. IMAX… The battle as old as the first
captured pixel itself.
Resolution
Unlike a digital sensor, a film frame does not have a regular
grid of discrete pixels. Instead, it has an irregular pattern of
differently sized grains. Conclusions from scientific studies
conclude that film has an extremely high amount of
resolution and information in the original negative, which
digital cameras will be hard pressed to match.
The resolution of film images depends upon the area of film
used to record the image (35 mm, Medium format or Large
format) and the speed. Estimates of a photograph's
resolution taken with a 35 mm film camera vary. More
information may be recorded if a fine-grain film, combined
with a specially formulated developer, are used. Conversely, use of poor quality optics or coarse-grained film yield lower image resolution.
The quality of digital photographs can be measured in
several ways. Pixel count is presumed to correlate with
spatial resolution. The quantity of picture elements (pixels)
in the image sensor is usually counted in millions and called
"megapixels" and often used as a figure of merit.
Many professional-quality film cameras use medium format
or large format films. Because of the size of the imaging
area, these can record higher resolution images than current top-of-the-range digital cameras. A medium format film image can record an equivalent of approximately 50
megapixels, while large format films can record around 200
megapixels (4 × 5 inch) which equates to around 800
megapixels on the largest common film format, 8 × 10
inches, without accounting for lens sharpness. In contrast
medium format digital provides from 39 to 80 megapixels.
Grain and Noise
Film has a characteristic grain structure. Different film
stocks have different grain. Digitally acquired footage lacks
this grain structure. It has electronic noise. In other words
grain can be “cool” while noise is always out of style.
Dynamic Range Latitude
Digital sensors lack the extended dynamic range found in
film. In particular, they tend to 'blow out' highlights, losing
detail in very bright parts of the image.
Time and Money
With film cameras, a roll must be processed prior to viewing.
In addition to processing, if post work is required the
negatives must also be digitized. These processes take both time and money making a film shoot a commitment for both the photographer as well as the client. Filmmaker
Christopher Nolan has speculated that the film industries
adoption of digital formats has been driven purely by
economic factors as opposed to digital being a superior
medium to film: “If you are looking strictly at production
cost, then you would use digital. But for the best image, it is
still film.”
While Hollywood is still in a dead lock, in the photography
world: ‘alea iacta est’ as Julius Caesar once said, ‘The die has been cast’. Unlike the Hollywood big-budget machine
appealing to a world-wide audience, the photographer is an
intimate low-budget one-man/woman show making digital
the economic no brainer. And with the digital world comes
the luxury of convenience. Digital cameras incorporate a
liquid crystal display allowing the images to be viewed
immediately after capture. The photographer may then
delete undesired photographs or reshoot the image if
necessary. A client can quickly print select images and post
work can begin immediately after shooting.