Thanks Boz, very interesting. Some of the Pentax images look slightly underexposed as compared to the Canon images. By the look of them, I'd say that the sensor is pretty much close to or exceeding the limits of the lenses. I.e., you can really see the difference with a very good lens as opposed to just a good lens.
I do not agree. I measured that the sensor of the *ist D resolves 50 line pairs per millimeter. See my test shots at http://www.arnoldstark.de/bilder/030914_istD_testtafellinien.jpg. The area displayed is from the image center. Its size on the test chart is 7x10 centimeters while the whole test chart is 92x62 centimeters and fills the whole frame.
50 line pairs per millimeter is easily achieved with all lenses that we used ast f8 - if and when properly focussed. So if in the images of Bojidars review you notice some insufficient resolution that is probably due just to poor auto-focusing. As you can see in my manually focussed shots (best shots when focus bracketing) of the resolution test target, at f8, with the *ist D, the resolution is the same for the FA43/f1.9 Limited and the "cheap zoom" FA-J 18-35/f4-5.6 @18mm. Now I have measured that the 43 limited can resolve more than 80 line pairs per millimeter on Agfapan25. Thus the sensor and focusing accuracy are the limiting factors. The resolving power of the lenses is not:
I would also like to point out, that with "saturation", "sharpness" and "contrast" each set to +1, the images taken with the *ist D are more pleasing than those taken at "0"
The sensor of the EOS 10 D probably resolves a little bit more than that of the *ist D - unfortunately we did not yet find the opportunity to do a resolution test with the 10D. However, the sensor of the 10D is a little bit smaller, too, so that the total number of line pairs being resolved should be on par with the *ist D.
Arnold
The 5 image continuous max keeps bugging me when they had originally said max. I wonder if its because you had noise reduction turned on?
Cheers,
rg
Bojidar Dimitrov wrote:
Hi,
Reachable from the main KMP page: http://KMP.BDimitrov.de/
Cheers, Boz
