Sigma 28-105mm F2.8-4 Aspherical IF A-mount lens review by QuietOC
|QuietOC#29641 date: Jul-27-2016|
flare control: 4
|ownership:||I used to own this lens|
|compared to:||Sony DT 16-105 F3.5-5.6|
Sony DT 18-135 F3.5-5.6 SAM
Sony AF 28 F2.8
Minolta AF 28 F2.8
Minolta AF 24-105 F3.5-4.5 D
Minolta AF 28-105 F3.5-4.5/RS
Minolta AF 28-135 F4-4.5
Sigma AF 35-135 F3.5-4.5
|price paid:||60 USD (used)|
Internal focus/non-rotating filter thread
Very decent performance over entire range
|negative:||Low Contrast (veiling glare?)|
Backward zoom direction
Short throw, stiff, uneven zoom mechanism
Short throw, noisy manual focus
Barrel distortion at 28 mm
72 mm filter thread
|comment:||This lens was released in 1996 replacing the 28-105mm F4-5.6 UC model. The original suggested retail price was $240 but $200 seems to have been the actual street price. This one is simply marked Aspherical--no "IF" or "D" or "DG" lettering on the barrel. It borrows the lens ID of the Minolta AF 28-135 F4-4.5 lens just like the earlier Sigma 35-135 F3.5-4.5. "Made in Japan"|
It really is quite compact and light for offering a range from 28/2.8 and 105/4. It is lighter than the Minolta AF 24-85 F3.5-4.5 not to mention the 28-105 F3.5-4.5. The 72 mm filter thread diameter is unnecessarily large.
Optically it is a small improvement over the slightly larger, heavier Minolta AF 28-105 F3.5-4.5. The controls and feel however are definitely a step down. The focus plane is similarly curved unlike the Minolta AF 28-135 F4-4.5. It matches the half meter minimum focus distance of Minolta AF 28-105 F3.5-4.5. The distortion at 28 mm is very similar to the Minolta AF 28-xx zooms. The aperture blades seem to be straighter than either version of the Minolta.
The 28 mm F2.8 primes have slightly better central sharpness and contrast wide-open and less distortion, but performance across the frame is similar.
Test chart comparison with the Minolta AF 28-105 F3.5-4.5 and others.