Cosina AF 100mm F3.5 MC macro A-mount lens review by QuietOC

QuietOC#45601 date: Oct-11-2020
sharpness: 4 color: 4 build: 3 distortion: 4 flare control: 3 overall: 3.6	tested on: film camera: APS-C: 6MP; 10MP; 12MP; 14MP; 16MP; 20MP; 24MP full frame: 12MP; 24MP; 36MP; 42MP; 61MP
ownership:	I own this lens
compared to:	Tamron 20 F2.8 OSD M1:2 Tamron 24 F2.8 OSD M1:2 Sony DT 30 F2.8 Macro SAM Tamron 35 F2.8 OSD M1:2 Sigma 45 F2.8 DG DN C Sony FE 50 F2.8 Macro Sony A 50 F2.8 Macro Minolta AF 50 F2.8 Macro RS Minolta AF 50 F3.5 Macro Minolta MD 50 F3.5 Macro Tamron SP 60 F2 Macro Sigma EX 70 F2.8 DG Macro Tamron SP 90 F2.5 Macro Canon EF 100 F2 USM Minolta MC 100 F2.5 Minolta AF 100 F2.8 Macro D Minolta AF 100 F2.8 Macro RS Vivitar 135 F2.8 Close Focusing
price paid:	49 USD (used)
positive:	Lightweight Rubber focus grip 49 mm filter thread
negative:	Dark--more like F4 Mushy corners 1:2 Chromatic aberration Wider than Minolta/Sony 100mm Macros No distance encoder
comment:	A very clean ProMaster Spectrum 7 copy purchased from a large eBay retailer. The 1:1 adapter was not included. "1994 Minolta" "MADE IN JAPAN" It is a bit strange that this lens was produced by the same company that now sells fairly expensive alloy manual lenses. The focus throw is very light and loose on this copy. The early review here by Turerkan back in 2007 mentioned a lot of friction. Image quality is not as good as other 100mm primes.