05-25-2011, 08:17 AM
[quote name='Brightcolours' timestamp='1306251143' post='8790'] The difference between Bayer CFA and Foveon/Sigma is very low, a bit more than 6% of resolution.[/quote]
Bold claim, do you have any calculations to back you up?
[quote name='Brightcolours' timestamp='1306251143' post='8790'] Of course, with only pure red (so no gradations of lighter red) with black patterns, or pure blue with black patterns, resolution can be less, But that is not really a significant aspect, just a theoretical one.[/quote]
You haven't tried photographing any clothing, have you? Because if you had, you wouldn't dismiss it so easily as "theoretical". The thing is that any garment with the colour on the darker side of red or blue suffers from tremendous drop in detail, and they're not so uncommon. For example, shooting something navy already feels as if you just upped your iso by few steps.
The example below *is* in focus, however detail is just poor. Of course there's no such an issue if you shoot gray scarf instead.
![[Image: sample4.jpg]](http://snap-studio.co.uk/rokas/sample4.jpg)
Another thing I find really annoying is the ability of camera to pick up colour moiré everywhere. Yes, low-pass filter suppose to fix that. No, it doesn't work in lots of situations. Try shooting some fine fabric under a bright light and you'll see what I mean. And the problem is that post-processing routines you would use to correct that quite often do lead to a loss of detail.
Keeping all of that in mind I was more than willing to give the new sensor a try. Obviously with the current pricing it's not going to happen and it's a pity.
Bold claim, do you have any calculations to back you up?
[quote name='Brightcolours' timestamp='1306251143' post='8790'] Of course, with only pure red (so no gradations of lighter red) with black patterns, or pure blue with black patterns, resolution can be less, But that is not really a significant aspect, just a theoretical one.[/quote]
You haven't tried photographing any clothing, have you? Because if you had, you wouldn't dismiss it so easily as "theoretical". The thing is that any garment with the colour on the darker side of red or blue suffers from tremendous drop in detail, and they're not so uncommon. For example, shooting something navy already feels as if you just upped your iso by few steps.
The example below *is* in focus, however detail is just poor. Of course there's no such an issue if you shoot gray scarf instead.
Another thing I find really annoying is the ability of camera to pick up colour moiré everywhere. Yes, low-pass filter suppose to fix that. No, it doesn't work in lots of situations. Try shooting some fine fabric under a bright light and you'll see what I mean. And the problem is that post-processing routines you would use to correct that quite often do lead to a loss of detail.
Keeping all of that in mind I was more than willing to give the new sensor a try. Obviously with the current pricing it's not going to happen and it's a pity.