|Posted: Wed Feb 15, 2017 1:40 pm Post subject: 28mm lens comparison (Pentax/Minolta/Topcon/CV/KMZ)
|Today I've checked my 4 SLR and 2 RF lenses in 28mm on my Ricoh GXR-M (APS-C).
As expected there was no real surprise. All of the lenses perform rather good to excellent, especially when stopped down.
In order to show a direct comparison I've chosen to show all lenses WO and at F5.6 (F6 and F8 for the KMZ). The differences at fully open apertures are rather negligible and only visible in 100% view "pixel peeping mode" in the very extreme corners. However, if somebody is interested I would be happy to show also some crops or provide the full size pictures. Stopped down it's almost impossible to differentiate those lenses.
Fully open the Minolta AF is best among the F2.8 lenses and all together the CV 28mm/1.9 (which is the most expensive lens) wins (it's also best at F2.8 ).
SMC Pentax-A F2.8
Minolta MD W.Rokkor F2.8 (version MD I, 7/7)
Minolta AF F2.8
Topcon Topcor UV F4
Voigtlander Ultron Aspherical F1.9
KMZ Orion-15 (1959) F6
Most of the WO shots have been heavily overexposed which has been corrected in LR6.
Interestingly Stephan from Artaphot states that the Minolta MD (7/7) is better than the Minolta AF (5/5). I cannot confirm this. For me it's the other way round. However, the differences at F2.8 are really negligible. Maybe there is some kind of sample variation. I don't know.
Manual Focus Lenses 24x36: Mainly from Minolta, Pentax, Voigtlaender, Leitz, Topcon and from Russia amongst others (Too many to list here).
Digital Cameras able to adopt these lenses: Sony A850 and NEX-C3, Pentax K20D, Panasonic Lumix GF1 and Ricoh GXR Mount A12.
Many film cameras for above mentioned lenses and middle format cameras and lenses (6x9, 6x7, 6x6 and 4,5x6)