In message Jorge wrote:
I offered some posts ago samples of images from an assignment I did both with 120 film and digital(D60 ).Still available .
Richard Kenward wrote in an earlier post in reply to Richard Lewisohn.
Dear JorgeHowever again in the interests of science, I can only see some value in doing this provided the image from the RZ has been captured on a high resolution fine grain transparency film, nicely processed and of maximum sharpness. This would suggest to me that it was used on a stout tripod without column extension, the mirror up facility was used, and that an appropriate aperture selected on a lens known to be excellent.THis test is self contained Richard, since the only real way to run this comparison is by having, say a Hassy and shoot digital with the Kodak back and with the same camera ,same lens, same settings etc, shoot with a film back and this would provide specific comparison between digital and 120 film.But there is no way you can ascertain you are having all this control if you are shooting and RZ with 120 film and a Canon 1Ds for digital.
Good points. All I was seeking to do was to establish as even a playing field as possible. Is it not true that a lens capable of excellent rendition with film formats is not so suitable for the best digital capture results? If so the above is biased against the digital capture image in the comparison surely?
Some of us are fortunate enough to run our own processing facilities and have the luxury of full control over the quality of processing. My inclusion of the requirement of a 'nicely' processed tranny was to work with film in it's best state, and to demonstrate the lack of crud/spotting from a drum scan carefully made in an ideal working environment.You also added an important thing. Processing scapes from our control and poor processing is not detachable from the scan. Final Quality depends on the soup and the soup keeper..
The need for spotting on scans understandably seems to be a major argument for digital capture over scanned film, so I felt this an important consideration as it does not actually have to be the problem many appear to assume it is! I am sure you already know that one of the benefits of drum scanning is that less than perfect film can be successfully scanned without the need for loads of after work with the cloning tool.
I am not suggesting for one moment that Richard Lewisohn would not be providing the very best 6x7 film for such a comparison, if indeed he is interested in taking up my offer.
Cheers
Richard
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