Minolta AF 28-105mm F3.5-4.5 RS A-mount lens review by QuietOC

reviewer#16276 date: Jun-19-2015
sharpness: 4
color: 5
build: 5
distortion: 4
flare control: 4
overall: 4.4
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 MP24MP24 MP36MP36 MP42MP42 MP
ownership:I own this lens
compared to:Sony DT 16-80 CZ
Sony DT 16-105
Sony DT 18-135 SAM
Minolta AF 24-85
Minolta AF 24-85 RS
Minolta AF 24-105 D
Minolta AF 28-80 D
Minolta AF 28-100 D
Minolta AF 28-105 & Xi
Minolta AF 28-135
Minolta MD & AF 35-105 Original & New
Minolta AF 35-200 Xi
Sigma AF 28-105 F2.8-4
Sigma AF 35-135 F3.5-4.5
price paid:54 USD (used)
positive:Smooth zoom and focus controls
Fast internal focus
Mid-range performance
Flat focus plane
negative:Barrel distortion at the wide end
Lateral CA
Somewhat noisy focus control
comment:This lens was $320 when released in 1994--$100 cheaper than the 24-85 which was released a year earlier and slightly more than the 28-85 RS. This definitely looks and feels like a premium lens, though the rounded 90's styling is dated. This lens is larger than the 24-50, 24-85 and 24-105 zooms but smaller than the 28-85, 28-135, and original 35-105 zooms. "JAPAN"

I purchased a fourth excellent copy with original hood from a large eBay seller. The third clean copy came without caps or hood and claimed to be untested, which probably meant tested and found poor. My second copy was purchased 2 years after the first copy. This fourth copy is much sharper than the previous copies.

The 28-105 RS has the same optics as the non-RS and Xi versions. The non-RS also has curved aperture blades, but those on RS version do seem to form a slightly smoother aperture shape.

It has more contrast than the 28-135. Overall it performs similarly to the 24-85, 24-105, and 100-300 APO zooms. The 24-85 lens focuses closer than the 28-105 lens despite both being listed with a 500 mm MFD. The original AF series 28-135 and 35-105 zooms might be more reliable for sharpness.

It has less distortion at 35 mm than the DT 35 SAM but more distortion than the 24-85. It doesn't seem to have mechanical issues like the later clutched focus lenses.

Flat back plastic hood looks and feels cheaper than shinier black plastic hood on the non-RS version. The hood is deeper than the similar 24-85 hood, but both use the same 3-lobed bayonet mount and are mechanically interchangeable.

rating summary

lens image
  • total reviews: 44
  • sharpness: 4.55
  • color: 4.75
  • build: 4.82
  • distortion: 4.41
  • flare control: 4.27
  • overall: 4.56
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