Sigma 70mm F2.8 EX DG Macro A-mount lens review by nikola_konsulov

reviewer#3916 date: Aug-3-2008
sharpness: 5
color: 5
build: 4
distortion: 5
flare control: 5
overall: 4.8
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:Konica Minolta AF 28-75 f2.8 (A.K.A Tamron AF 28-75 f2.8)
price paid:
missing
positive:Sharp, Sharp, Sharp! AF is swift. Focus limiter switch. Pretty good build. f2.8 aperture. 9 aperture blades.
negative:Aperture blades not circular. Focus ring could have been slightly larger and have a clutch as to not rotate during AF.
comment:This lens is truly sharp from f2.8 and onward through f11. f16 is good, but I do not know beyond that since I have not bothered to try. The aperture does not have round blades. So I am not sure what effect that will have on the quality of the bokeh when stopped down past f4 or f5.6 regarding the highlights. I would have liked a slightly larger focus ring. Its size is okay, but a 1/4 inch more of rubber would have been nice. I don't mind that it does not have a clutch in the focus ring, but for a macro lens it would have been a nice feature. Others say that the focus is not fast. That's true, but it is swift. After all, it is a dedicated macro lens. It needs to extend quite a bit to get the 1:1 ratio when you need it. Standard lenses don't do that. That's why they are standard lenses. However, if you put it in "Normal" mode by setting the focus limiter switch (1:5 to Infinity range) it is actually very fast. I have noticed that creep comes into play when the lens is off the camera from about 80 to 90 degrees. When the lens is on the camera in manual focus creep does not appear. The disengaged gearing of the camera's AF keeps this creep that I described from occurring while on the camera.

This lens is what all the reviews have stated it too be optically......Sharp! from f2.8 from corner to corner.

rating summary

lens image
  • total reviews: 39
  • sharpness: 4.97
  • color: 4.87
  • build: 4.82
  • distortion: 4.95
  • flare control: 4.79
  • overall: 4.88
Dyxum.com - Home of the alpha system photographer
In memory of Cameron Hill - brettania