Originally posted by Ed Hurst My sincere thanks to Mike (iCrop) for his hard work in organising and posting the files, supported very badly by my tardiness!
And thanks again to TheDocAUS for the use of his DFA 35mm lens.
Here is a rundown of the file details...
Ed, thanks for the details, and thank you again for shooting these and providing them to the forum, and thanks again to iCrop for the work in getting them uploaded.
These tests have been helpful to me. First, as I have been suspecting for some time, processing software such as Lightroom has become so good, that after I made proper adjustments to the files I was able to get the manual A 35mm lens files to look as good as the new/modern DFA35 and 28-45. That's not a slam on the new glass. I am quite sure the new optics offer better flare resistance for those who shoot toward bright light, and better performance at wider apertures. But in global contrast, microcontrast, color and sharpness, I was able to get the old A lens looking just as snappy and beautiful as the other two lenses, by adding only a few more points of clarity/contrast (I viewed at 200% on a Retina screen to confirm).
Additionally, these results were further confirmed today when a DFA35 arrived at my home and I tested it at f/8/11/16 at infinity and again at mid distance against my own copy of the A35. At wider apertures the new DFA is better and it also shows the better flare resistance of modern coatings when a bright light source was included in the frame. But at f/16 where I live for my landscape work, my old A copy is actually a bit sharper throughout the frame, has slightly less CA, and less corner vignetting at infinity.
(By the way, those concerned about diffraction at small apertures will find that deconvolution sharpening recovers most of the detail. I just printed a 30x40 landscape shot at f/22 with the 67 105mm and it looks oustanding in detail and clarity even with my nose up to the print)
The DFA35 is of course a very fine lens and was a great deal at B&H in 'used' 10 condition at $1350 (looks brand new, and I'm wondering if this is the copy B&H loaned to Diglloyd for his tests), but I can't justify keeping it when my A35 copy is already so sweet, so back it goes. Someone wanting the DFA35 at a discount should keep an eye on B&H's used listings for this sample to come back to them.
Cheers,
Ross