Minolta 28-100mm F3.5-5.6D

Minolta produced this lens since 2003. It's very common lens and it's not problem to buy a cheap one. Body is from plastic and has a rubbered zooming ring. Front element is rotating when focusing. It's full-frame lens, but can be used on APS-C DSLRs.

Specifications

Focal range28-100 mm
Minimum focus distance480 mm
Aperture blades9
Filter diameter55 mm
Focal range (mm)28355070100
Maximum aperture3.54 55.65.6

Depth of field and precision of focus

I tried depth of field at 28, 35, 50 and 100mm focal lengths. Lens has little backfocus, at least my one. Image might be much sharper. I attached image comparing detail from Sony SAL1855 and from this lens, both of them for maximum focal length and f/8. You can see that Sony SAL1855 is much sharper and has much better details.

Depth of field, Minolta 28-100mm F3.5-5.6D, 50mm, f/5.6
50mm, f/5,6
Depth of field, Minolta 28-100mm F3.5-5.6D, 100mm, f/8
100mm, f/8
Depth of field, Minolta 28-100mm F3.5-5.6D vs. Sony AF DT 18-55mm F3.5-5.6 SAM (SAL1855)
SAL 1855 (55mm, f/8) vs. Minolta 28-100 (100mm, f/8)

Distortion and abberation

Distortion was tested at 28, 35, 50 and 80mm focal lengths. Lens has little barrel distortion at 28mm, at 50mm there is no distortion and it has a little pincushion at 100mm. Abberation is red and is visible mostly at corners when shooting wide open. It's much better when stopped down, but it never disappears.

Distortion, Minolta 28-100mm F3.5-5.6D, 35mm
35mm
Distortion, Minolta 28-100mm F3.5-5.6D, 50mm
50mm
Distortion, Minolta 28-100mm F3.5-5.6D, 100mm
100mm

Conclusion

I used this lens for about half a year. I was not satisfied with image quality. I didn't like it's colours and it was not sharp enough. In my opinion Sony SAL1855 kit lens are much more better than this. Rating 23/40.