Sigma 28-105mm F2.8-4 Aspherical IF A-mount lens review by QuietOC

reviewer#29641 date: Jul-27-2016
sharpness: 3.5
color: 4
build: 3
distortion: 4
flare control: 4
overall: 3.7
tested on:
  • film camera:Film camera
  • APS-C: 6MP6 MP; 10MP10 MP; 12MP12 MP; 14MP14 MP; 16MP16 MP; 20MP20 MP; 24MP24 MP
  • full frame: 12MP12 MP; 24MP24 MP; 36MP36 MP; 42MP42 MP; 61MP61 MP
ownership:I own this lens
compared to:Canon EF 22-55 USM
Minolta AF 24-50 F4
Canon EF 24-85 F3.5-4.5 USM
Minolta AF 24-85 F3.5-4.5 & RS
Minolta AF 24-105 F3.5-4.5 D
Tamron SP 24-135 F3.5-5.6
Sony FE 28-70 F3.5-5.6 OSS
Tamron 28-75mm F2.8 Di III RXD
Sony 28-75 F2.8 SAM
Tamron SP 28-75mm F2.8 XR Di
Tokina 28-80 F2.8 AT-X Pro
Minolta AF 28-80 F3.5-5.6 D
Minolta AF 28-85 F3.5-4.5
Minolta AF 28-100 F3.5-5.6 D
Canon EF 28-105 F3.5-4.5 USM II
Minolta AF 28-105 F3.5-4.5 & RS & Xi
Minolta AF 28-135 F4-4.5
Minolta AF 35-70 F4
Minolta AF 35-80 F4-5.6 II
Minolta AF 35-105 F3.5-4.5/New
Sigma AF 35-135 F3.5-4.5
Minolta AF 35-200 F4.5-5.6 Xi
Tokina AF 35-200 F4-5.6 SD
price paid:40 USD (used)
positive:Compact size
Light weight
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"

I purchased a second copy that looks new but has an alignment problem.

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.

rating summary

lens image
  • total reviews: 12
  • sharpness: 3.92
  • color: 4.42
  • build: 3.42
  • distortion: 4.08
  • flare control: 4.08
  • overall: 3.98
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