Large Format vs Medium Format Digital
Well thanks to everyone who helped with the planning and analysis of the testing. All of the results and analysis are now up at
http://www.landscapegb.com/issues/lgb-0028/
The bottom line? 8x10 rules the roost and the challenge is really 4x5 vs IQ180 - personally I think the 4x5 wins but it's close..
Tim
p.s some interesting conclusions about differences between 10x8 and 4x5 in my report bit (i.e. almost no difference in resolution once you stop down to an equivalent depth of field of f/32 on 4x5).
Re: Large Format vs Medium Format Digital
Quote:
Originally Posted by
timparkin
(i.e. almost no difference in resolution once you stop down to an equivalent depth of field of f/32 on 4x5).
What constitutes an "equivalent" DoF?
DoF calculations include a fudge factor called the Circle of Confusion, which changes with negative size, getting bigger with larger formats.
- Leigh
Re: Large Format vs Medium Format Digital
Quote:
Originally Posted by
Leigh
What constitutes an "equivalent" DoF?
DoF calculations include a fudge factor called the Circle of Confusion, which changes with negative size, getting bigger with larger formats.
- Leigh
I've worked it out based on the same visible depth of field in the image - i.e. so all of the images look the same. (so CoC will scale with sensor size).
Re: Large Format vs Medium Format Digital
Wow Tim, a lot of testing obviously, your efforts are appreciated by all. The use of the 80x stereo microscope was helpful with showing absolute film resolution and I'm sure us 8x10 and other Large Format photogs are not surprised.
Re: Large Format vs Medium Format Digital
Re: Large Format vs Medium Format Digital
I don't understand any of this!
Can you see any difference between any of these in a 16x20/24 print?
Re: Large Format vs Medium Format Digital
Hi Tim,
Do you think Portra is resolving much more fine detail than Velvia? Looks like it to me... or is it because of the 400 ISO vs. 50 ISO that allows for faster shutter speeds? I'm talking about the landscape shots. If Portra is better, than Portra 160 looks like it would kick ass in the studio with 8x10. I'm still messing with Provia chromes...
Re: Large Format vs Medium Format Digital
I don't believe it for a minute. My 33 megapixel Leaf Aptus 75S is just a shade behind 4x5 in terms of resolution. Dynamic range..no contest.
Re: Large Format vs Medium Format Digital
Quote:
Originally Posted by
Bill_1856
I don't understand any of this!
Can you see any difference between any of these in a 16x20/24 print?
Just look at the pretty pictures then ;-) I've talked about print assessment in my editors conclusions. And yes you can tell a difference.
Re: Large Format vs Medium Format Digital
Quote:
Originally Posted by
Robert Jonathan
Hi Tim,
Do you think Portra is resolving much more fine detail than Velvia? Looks like it to me... or is it because of the 400 ISO vs. 50 ISO that allows for faster shutter speeds? I'm talking about the landscape shots. If Portra is better, than Portra 160 looks like it would kick ass in the studio with 8x10. I'm still messing with Provia chromes...
Yes Portra does seem to out resolve chromes and Portra 160 out resolves Portra 400