Sigma 150-500mm compared to Bigma

Started Jun 7, 2008 | Discussions thread
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Miljenko
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Sigma 150-500mm compared to Bigma
Jun 7, 2008

Couple of days ago I was lucky to get a sample of Sigma 150-500mm DG OS along with Sigma 50-500mm EX DG for a brief comparison. As I'm not a regular Canon user, I was forced to use what was available at the office: EOS 20D.

Camera was set to default settings and ISO100, lens mounted on heavy duty Manfrotto tripod/head combo, OS switched off, timer shutter mode. Aperture set from fully open to f/11 in 1/3 f-stop increments. Building shot was at approx. 80m distance.

Here are 100% central and edge crops shot at 150mm, 300mm, 400mm and 500mm focal lenghts:
http://www.pbase.com/miljenko/image/98272367
http://www.pbase.com/miljenko/image/98272370
http://www.pbase.com/miljenko/image/98272372
http://www.pbase.com/miljenko/image/98272374

Unfortunately, besides shooting a boring building I had no much chance of real life handheld use, but here is a 500mm sparrow shot at incredible 1/25 exposure:

If you check comparison crops closely, you might come to similar conclusion as I did:

Sigma 150-500 delivers great contrast and saturation on all f-stop settings. As the matter of fact, you don't get much of improvement when stopping down. Both contrast and resolution stays within similar and very acceptable levels through the f-stop range.

OTOH Sigma 50-500mm needs to be stopped down in order to reach it's sweet spot (which is at f/9 BTW). At this f-stop setting Bigma delivers higher resolution than 150-500 from about 300 to 500mm focal length.

This lens is built to exactly the same level of crafsmanship as 50-500 so when you take into account it's price and performance, it can be considered as very good value for money.

If you want to see few other side by side 150-500 and 50-500 pics, please visit http://www.pbase.com/miljenko/s150_500vs50_500 gallery.
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Best regards, Miljenko
http://www.pbase.com/miljenko
http://www.fotomag.net

Who dies with most toys, wins.

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