|Posted: Tue Feb 06, 2018 12:17 am Post subject:
|I did a google search for that "German Color Foto Test 1980" that tb_a refers to. I'm curious, did it include any Canon lenses?
Although I know almost nothing about Canon lenses as I never had one myself, I can certainly help you further.
The test included 2 Canon lenses, the cheaper "FD SSC" and the more expensive "FD SSC AL" both 55mm/F1.2 lenses. Don't ask me about "breechlock" models. Obviously the AL is the aspherical one and the cheaper one the non-apsherical lens.
The good news: In terms of center sharpness fully open the "AL" was second best after the Pentax lens and the cheaper one was third. However, in corner sharpness WO both were rather mediocre only, i.e. below the Nikkor, Minolta MD and Pentax lenses.
In the free text they mention that both Canon lenses show high resolution in the center and that in practice they would perform equally.
Stopped down as from F4 both Canon lenses were like the Pentax one "absolute top level"; i.e. equally best of all incl. corners.
I only have this test on paper and in German. Sorry.
BTW, it might also be interesting to know that the most expensive Nikon Noct-Nikkor 58/1.2 lens was in every aspect inferior to the much cheaper Nikkor 50/1.2. At least I consider this as slightly amusing.
Manual focus lenses mainly from Minolta, Pentax, Voigtlaender, Leitz, Topcon and from Russia (too many to be listed here).