Sigma 100-300mm F4 EX DG IF APO A-mount lens review by Kirk

reviewer#3370 date: Mar-18-2008
sharpness: 4.5
color: 5
build: 5
distortion: 5
flare control: 5
overall: 4.9
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:Sigma 70-300 APO
Sigma 500/7.2
price paid:1099 USD (new)
Lens length does not change with Focus or Zoom
comment:I recently picked up this lens along with the Sigma 1.4 TC. I was looking for a long telephoto lens and after reading the reviews, I settled on this one and following my first outing at the Zoo, I can't be happier. The sharpness blows my other long Sigma's out of the water (70-300 and 500/7.2). The constant f/4 is a nice bonus as well. I was worried about the focus speed on my 7D, but again was very satisfied.

The lens is very heavy and best used with a tripod or monopod, but can be handheld. The plus side of it being heavy is that it is build is excellent The lens has the usual EX finish which I personally like. The focus and zoom rings are large use a rubber coating.

The only downsides I have noticed thus far is the method to switch between AF and MF along with the proximity of the tripod mount and zoom ring.

Update: Have been using this lens on my A900 for sometime now and could not be happier on its performance on FF. Continues to be a favorite lens of mine!

rating summary

lens image
  • total reviews: 29
  • sharpness: 4.71
  • color: 4.72
  • build: 4.86
  • distortion: 4.76
  • flare control: 4.62
  • overall: 4.73 - Home of the alpha system photographer
In memory of Cameron Hill - brettania