11-27-2010, 12:30 PM
[quote name='Class A' timestamp='1290859150' post='4494']
Do you know that's the real reason?
Maybe Pentax believes that moiré is rarely a problem for landscape photography (one of the primary applications for the 645D) and that users are craving for 100% crops that look crispish without any capture sharpening?
I would never say such a thing and I wonder what makes you think I would? I only said that I don't know why companies like Leica and Kodak offer products without AA filters. Above I offer a speculation, but have no insights into the true reasons.
[/quote]
[url="http://www.luminous-landscape.com/images-82/TABLA3.jpg"]http://www.luminous-landscape.com/images-82/TABLA3.jpg[/url]
e.g. diffraction is a natural AA filter from ~f/8 on high MP APS-C DSLRs. That's also easily visible in the local tests actually where the curves start to decrease from f/8 onwards (high performance lenses). f/11 for MP FF DSLRs and f/16 from MF cameras.
Do you know that's the real reason?
Maybe Pentax believes that moiré is rarely a problem for landscape photography (one of the primary applications for the 645D) and that users are craving for 100% crops that look crispish without any capture sharpening?
I would never say such a thing and I wonder what makes you think I would? I only said that I don't know why companies like Leica and Kodak offer products without AA filters. Above I offer a speculation, but have no insights into the true reasons.
[/quote]
[url="http://www.luminous-landscape.com/images-82/TABLA3.jpg"]http://www.luminous-landscape.com/images-82/TABLA3.jpg[/url]
e.g. diffraction is a natural AA filter from ~f/8 on high MP APS-C DSLRs. That's also easily visible in the local tests actually where the curves start to decrease from f/8 onwards (high performance lenses). f/11 for MP FF DSLRs and f/16 from MF cameras.