 Charley Andrisano |
Digital capture compared to film capture To whom it may concern: I recently did a comparison with my Canon 20-D at ISO 100, and also shot the same pics with my Canon EOS Elan-7 camera. Every shot was exposed at f.8. All the shots were taken at 28MM, of course there was a 1.6 magnification on the 20-D The film was Fuji Color 100 Superior. I shot all the digital pics in RAW Mode. What I found was that all the digital shots were much darker than the film shots. The film shots looked like what I remembered when I made the shot. To get the same relative color variances of the film shots, I had to color correct in Photoshop. Is this the norm when you shoot in RAW. I'm guessing that if I had made the digital shots in JPEG, the match up would be very close. As far as detail, the digital shots were in the same field as the film shots. And at times when I duplicated the digital shot, the exposure had a slightly different reading. But I shot everyone without any over or under changes. Sorry, I made this so long. Respectfully, Charley Andrisano
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Jon Close |
There a couple of reasons for the differences. (1) you cannot compare using the same focal length. With both cameras using 28mm, the Elan 7 sees a much wider scene that the meter will average to a different exposure than what the 20D sees. You really should compare a 28mm on the 20D to a lens 1.6x longer on the Elan 7 (ie. ~45mm). (2) One cannot look at prints to compare the exposure. The lab making the prints makes adjustments to lighten/darken the final result and it doesn't necessarily exactly represent how the negative was exposed. The lab does essentially the same thing you're needing to do in photoshop. Additionally, print film has much greater exposure latitude than do digital sensors, which are more like slide film in this respect. (3) How are you comparing the 20D's images? Are you making prints? or simply viewing on a monitor. Your printing settings and/or monitor may not be calibrated properly.
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Charley Andrisano |
Hi Jon: I greatly appreciate your response to my question regarding the 20-D, and the film shots I took. Yes, I did make prints from my computer of the 20-D images. When the 20-D images appeared on my monitor, they were much darker than the film shots. I printed one version of the digital image without any correction....that was considerably darker. Then I made another print and color corrected in Adobe Photoshop Elements 2.0, and that resembled the film shot in color variances, and yet more subdued in highlights, and great detail. I wish I had an answer about my monitor being calibrated properly. I suppose I should take your advice and go to a 45MM length with the Elan-7 Thanks, Charley
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