Sigma 70-300mm DG OS Lens: Another Lightweight Winner for Budget Conscious Shooters

Sigma 70-300mm DG OS Lens: Another Lightweight Winner for Budget Conscious Shooters

Moving beyond the kit lens is a big and very common step in upgrading your photo gear. One of the first lenses most photographers want to add is a better telephoto zoom. But their jaws drop at the size, weight and price of the big “pro” lenses so their next best choice is the very popular 70-300mm zoom. Nikon and Canon have great products in that range but at nearly $600 they’re more than many photographers paid for their camera and more than many of them want to spend. Fortunately Sigma has upgraded its popular 70-300mm Zoom to include both a motor and stabilization and kept the street price under $400…

At 5” x 3” the Sigma is only a tiny bit smaller than the Nikon or Canon, but it is about 6 ounces lighter and more than $150 less expensive. So of course the next question is how the images stack up. I spent some time with a loaner unit and put it through its paces versus the known ultra-sharp to help you make your decision and as you’ll be able to see from the sample images included with this review it performed quite well.

The is $399 at B&H, as is the . Versions are also . Make sure you are looking at the new “DG OS” version as there are several older and less expensive versions of the Sigma 70-300 in the market that lack the build quality and image stabilization of the newest version.

Image Quality & Comparison

This flower image was shot with the on my full frame Nikon D700. I used 1600 ISO to make sure I had plenty of shutter speed (1/4000s at f/8) to maximize the sharpness even while stopping down the lens to f/8 for best results.

Click on the image to see a higher resolution version.




This image was taken with the ultra-sharp —a $2,000 Pro lens on my D300S (the DX sensor at 200mm provides the same effective focal length as I got with the on my .

Click on the image to see a higher-resolution version you can compare to the same image shot with the with the same camera settings (1/3000s which is what the D700 metered, at f/8).




I was pleasantly surprised to find that the Sigma focused fairly well with the . While I’m not normally a fan of using any “mid-range” zoom (like the Nikon 80-400 or 70-300, Canon 100-400 or 70-300, or similar Sigma lenses) with a Teleconverter because of the loss of speed and sharpness, there is no denying the power of the combination of a DX sensor’s 1.5 effective focal length multiplier with a 70-300mm lens and a 1.4x Teleconverter. The result is an effective 600mm f/8 lens that fits in your pocket and costs about $600. A pretty compelling price and convenience point for those who don’t want to spend over $1,000.

This image was taken with the and the Kenko. You can click on it to see a higher resolution version. It is not as sharp as images taken without the Teleconverter of course, or ones taken with a “native” 400mm lens, but for many uses the convenience may outweigh any image issues for you.

Field Test – Bird Photography

Okay, you’re probably saying “that’s nice but what about auto-focus and action images.” I was curious too so I put the Sigma 70-300 on my D300S, put my Kenko TC in my pocket and headed out to my favorite feeder. My first really pleasant surprise was how fun it was to shoot with the lens. It focused quickly with images snapping into focus in the viewfinder and with only a little more noise than the AF-S motors in my Nikon lenses. Even with the teleconverter on the combo was responsive—although at an effective aperture of f/8 with a teleconverter when zoomed to the long end it certainly wasn’t going to help much in low light. It’s never as simple to do “apples to apples” field tests between different lenses as studio tests since subjects are always changing, but to help you get a sense of your options I’ve posted three California Quail images below—all taken at the same feeder with similar lighting and similar cameras.

The first image was taken with a Nikon D300 and a $10,000 , the second with a with the Sigma 70-300mm zoom, and the third with the Sigma lens plus the Kenko Teleplus teleconverter. The previews are linked to high resolution versions for you to compare. You can see that each image is slightly less sharp than the one before, which we’d expect, but of course the difference in cost and convenience is huge between the 20 lb. rig needed with the 600mm f/4 and the 4 lb. rig used for the others:

Male California Quail photographed with Nikon D300 and

Female California Quail photographed with Nikon D300S and

Male California Quail photographed with Nikon D300S and and

The Bottom Line

If you don’t mind the extra cost then there is no question the Nikon’s silent wave (AF-S) focusing motor makes the offers a premium shooting solution for Nikon shooters and does as well. They will both give you a quieter and perhaps slightly faster auto-focus for their higher cost.

NOTE: While we were working on this review B&H dropped the price on the from $589 to $519, putting it within $150 of the price of the Sigma and within $10 of the Canon equivalent so there are lots of great options for every shooter depending on your budget.