In a message dated 11/19/02 1:49:41 AM, [EMAIL PROTECTED] writes:

<< Why is it that images shot on conventional video ( including digital video)
have this "domestic" look, this  Home video look as compared to film
cinematography, and much worse yet, compared to digital photography, in
which images look so much like film?? Is it the chip, the processing of the
data in the electronics or what?? Digitised 35 or 16mm film does not look
like video, it looks like film. >>

Dear Jorge

Same with stills.
 
Film has a built in fault. In theory Sensitometric Curves should be straight 
lines, with film they are not. Shadows and highlights are lower in contrast 
than the mid tones. The human eye focusses on only one part of a scene at any 
one time and adjusts for only that one spot as far as colour, focus and 
reference to emotional ideas of reality. Film, by only getting the midtones 
decently contrasty goes a small way towards what the eye sees "emotionally". 
i.e. It is selective of the midtones and de-emphasises the shadows and 
highlights.

Digital capture has a straight line Curve. Contrast in shadows, midtones and 
highlights is the same. There is great shadow detail in every digital camera 
review I've seen. Reviewers praise shadow detail as if it were some kind of 
Nirvana. I have seen many "perfect" digital images which would be improved by 
showing some creative decision on where the viewer was meant to look. Taking 
most of that detail out of the shadows is one way of bringing attention to 
the main part of the image. 

I also have a theory that photographers with experience of B&W printing who 
used dodging and burning effectively have a different approach to tonal 
control than those who have only ever shot colour on 35mm and sent it to a 
lab for processing. My use of Photoshop is almost all an extension of B&W 
printing. Holding back glare on roads, burning back detail in sunlit 
buildings, grading skies to darken at edges etc. I will also choose a 
contrast range to suit the subject not the theory of straight line Curves.

Enough before breakfast, off to delete all those posts about blocked inkjets. 
 

Bob Croxford




 

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