Riley
New member
well heres the thing, i use wides all the time so its not like i dont have an interest in UWA IQ, its how i make my living. The wider the lens the more acute the problem, but we are, as you point out, speaking of linear dimensions that are quite small.
From the Kodak E1 sensor, which is nearly 20x15 anyway,
whether we use it all or not, to 20x15 is an image circle increase of just 2.5mm on the image size of the old sensor, a radius out of 1.25mm. Jay Turberville tested several lenses and found them to exceed 40mm.
http://forums.dpreview.com/forums/read.asp?forum=1000&message=27090223
so ok, lets get away from vignetting and look at soft edges, assuming that this would be an issue, even without the best of microlenses, there are a number of ways to defeat it. either stop down, or limit the WA.
If you look at the patent information, the image circle specification has a range between 21.2 (less than what we use now) and 25mm. What I am suggesting is actually within the specification, and isnt so darned far from the full size of the Kodak sensor.
http://patft.uspto.gov/netacgi/nph-...50&s1=6910814.PN.&OS=PN/6910814&RS=PN/6910814
From the Kodak E1 sensor, which is nearly 20x15 anyway,
whether we use it all or not, to 20x15 is an image circle increase of just 2.5mm on the image size of the old sensor, a radius out of 1.25mm. Jay Turberville tested several lenses and found them to exceed 40mm.
http://forums.dpreview.com/forums/read.asp?forum=1000&message=27090223
so ok, lets get away from vignetting and look at soft edges, assuming that this would be an issue, even without the best of microlenses, there are a number of ways to defeat it. either stop down, or limit the WA.
If you look at the patent information, the image circle specification has a range between 21.2 (less than what we use now) and 25mm. What I am suggesting is actually within the specification, and isnt so darned far from the full size of the Kodak sensor.
http://patft.uspto.gov/netacgi/nph-...50&s1=6910814.PN.&OS=PN/6910814&RS=PN/6910814