09-27-2013, 07:10 PM
Rover, I wasn't complaining - how could I? The site is for free and I never provided a lens to test or did something else than read and answer some posts. It's just - loads of megapixel or not - that Sigma was able to improve their lens quality when they exchanged their aged Kodak testing sensors against their own.
Which - another icing on that cake - is moved four times to get each corner of their full frame lenses. A clear benefit to them, but I guess, the APS C lenses are tested with one sensor without moving, so just the normal 46 MP what Sigma claims to have. Depending on the calculation of RGB bayern pattern they have a point there and a good sensor.
And there are only resolution comparisons depending on the number of Megapixels. A lot of other testing can be done with 12 MP max. Or less. Distortion will not be influenced by resolution, CA? maybe a bit, bokeh none at all and vignetting also none at all.
Partly I think, we're already over the border to be able to see differences in normal viewing distances, given a certain price limit. To me it's a new thing to be generous with framing and crop afterwards. Of course it's better to do that on site instead of in post - but it's great to know some lenses and sensors do have reserves I only could dream of 4-5 years ago. Those reserves don't depend on test camera's resolutions - unless one wants to know in advance about them. To me it's also great to discover them after buying a great lens.
I found that report here quite interesting: http://www.imaging-resource.com/news/201...m-the-insi
Which - another icing on that cake - is moved four times to get each corner of their full frame lenses. A clear benefit to them, but I guess, the APS C lenses are tested with one sensor without moving, so just the normal 46 MP what Sigma claims to have. Depending on the calculation of RGB bayern pattern they have a point there and a good sensor.
And there are only resolution comparisons depending on the number of Megapixels. A lot of other testing can be done with 12 MP max. Or less. Distortion will not be influenced by resolution, CA? maybe a bit, bokeh none at all and vignetting also none at all.
Partly I think, we're already over the border to be able to see differences in normal viewing distances, given a certain price limit. To me it's a new thing to be generous with framing and crop afterwards. Of course it's better to do that on site instead of in post - but it's great to know some lenses and sensors do have reserves I only could dream of 4-5 years ago. Those reserves don't depend on test camera's resolutions - unless one wants to know in advance about them. To me it's also great to discover them after buying a great lens.
I found that report here quite interesting: http://www.imaging-resource.com/news/201...m-the-insi