Minolta AF 100-200mm F4.5 A-mount lens review by QuietOC
|QuietOC#18370 date: Oct-8-2015|
flare control: 4
|ownership:||I own this lens|
|compared to:||Sony DT 18-200|
Minolta AF 35-200 Xi
Sony DT 55-200 SAM
Minolta MD & AF 70-210 F4
Minolta AF 70-210 F3.5-4.5
Minolta AF 70-210 F4.5-5.6
Sigma AF 70-200 F2.8 EX DG APO
Tokina 80-200mm F2.8 AT-X Pro
|price paid:||22 USD (used)|
|positive:||Size and weight|
Flat focus plane at 200 mm
Good CA control
Decent hood that is also useful for the 35-70 F4
|negative:||Poor performance at close focus|
Curved focus plane at 100 mm
Busy background bokeh
Cheap build, especially the focus mechanism
Sunken, hard plastic focus ring
Rotating + extending barrel/filter threads
|comment:||I've bought 4 copies of the Lite Beer Can on eBay. The bottom of one copy had some scratches and the shiny enamel is chipping/peeling in one spot. The second copy is in much nicer shape and came in the original packaging with a price sticker from 1988 for $153.00. The third copy looks much the same.|
This lens was half the price of the 70-210 f/4 or 35-105 and one fourth the price of the 28-135. It was the second cheapest lens in the entire Minolta AF lineup after the 50 f/1.7.
At close focus the wide 100 mm end is longer than the 105 mm ends of the shorter, internal focus zooms. The 16-105 in particular is much wider at its 105 mm setting. However it matches up quite well with the DT telephoto zooms at their 100 mm marks.
It has noticeably pincushion distortion, though less than the 55-300 and 55-200 SAM lenses. Unfortunately, it doesn't match the center sharpness, contrast, or AF accuracy of the SAM zooms or the older 70-210 F4 or even the slightly newer 70-210 F4.5-5.6. Surprisingly, the focal plane at 200 mm is actually flatter than the 70-210 F4. Unlike the 70-210/4 the background bokeh at 200 mm is quite busy, but foreground bokeh is quite smooth. I notice some aliasing at moderate distances of fine detail.
The more worn lens noticeably wobbles at full extension. AF accuracy was poor at close distances, but at least better than the 28-105. The AF reduction gears are visible inside the mount side of the lens when the lens is zoomed out. Lens wobble, short focus throw, and general looseness of the focus mechanism makes precise focusing more challenging. At least the focus control ring remains in one location on the lens instead of extending out with the barrel as on the 70-210 f/4, and it doesn't have slop like the DT 16-105.
This is obviously not a lens designed for close focus. Closer to infinity it works pretty well. Background bokeh is quite harsh. It is a nice size and weight to carry around, and the zoom mechanism is nicely weighted and smooth.