Minolta AF 75-300mm F4.5-5.6 D A-mount lens review by sooner
 sooner#2358 date: May-26-2007 | |
|---|---|
| sharpness: 3.5 color: 3 build: 4 distortion: 3 flare control: 3 overall: 3.3 | tested on:
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| ownership: | I own this lens |
| compared to: | Baby Beer Can Sigma 28-200D |
| price paid: | missing |
| positive: | Very good resolution at f/8. Not bad results wide open. Pleasing near-macro photos. Light and compact enough. |
| negative: | Considering the price - nonthing. |
| comment: | I have tested this, and the lenses listed, using the Koren, 2003, (5mm) test charts to determine the resolution based on the MTF-50 criterion. Two of the sine-wave, test, strips; one horizontal near the center of the frame, and the other, diagonal, very close to the corner of the frame. The tests were made with a KM5D, hand held, image stabilization “on”, ISO 100, in bright sunlight so that the shutter speed was quick enough to satisfy the reciprocal of the focal length criterion. Results: (focal length/f-stop/lines per inch on an 8” x 12” print at center/ditto-at corner). (300/8/128/63), (300/5.6/97/38), (75/8/119/65), (75/4.5/108/61). My understanding of photo resolution quality is: >150 lpi=excellent, >110 lpi=very good, >80 lpi=good. I have some very nice 8” x 12” prints from this lens at 300 mm as well as macros of flowers. While not up to the Beer Can, or the Sigma, it produces very good results at f/8. I wonder if this lens, the 75-300 (New), and the 75-300II are all the same optically. The physical specs suggest they are. More details on this and other lenses can be found at: http://www.geocities.com/royanddee/lens_test_results_mtf50.htm |
; 10MPrating summary
- total reviews: 47
- sharpness: 3.89
- color: 4.17
- build: 3.66
- distortion: 3.98
- flare control: 3.74
- overall: 3.89