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bobjones1943 · 11-13-2011, 11:15 PM

G'day all just joined

I am about to buy my first ever DSLR camera and am considering 2 Sigma lenses mainly for Astrophotography:-

8-16mm F4.5-5.6 DC HSM for wideview
17-50mm F2.8 EX DC OS HSM for general purposes

Any comments/advice on these lenses please.

Bob J

Adam · 11-13-2011, 11:41 PM

You can read about the sigma in our in-depth review- it's a nice lens (better than the Pentax counterpart...)
DA* 16-50mm vs. Sigma and Tamron 17-50mm Comparison - Introduction

Not sure about the 8-16mm:
Sigma 8-16mm F4.5-5.6 DC HSM - Review

Perhaps a slightly less wide lens would be better unless you really need the 8mm.
Pentax SMCP-DA 12-24mm f/4 ED AL Autofocus Lens 21577 B&H Photo

walter · 11-14-2011, 12:24 AM

The Sigma 8-16 has surprisingly little chromatic aberration for a wide angle lens, which is nice for the stars. Not really many other options that I know of if you're going to use the wide end of that lens. The corners and edges aren't as sharp as I would like, but that's probably true of most ultra wide lenses. I have a few night timelapse videos on vimeo if you want to get a feel for the lens, I think they were all taken with the Sigma 8-16.

edit: wow, I didn't know it would auto-link a vimeo clip, that's pretty cool

kent · 11-14-2011, 02:48 AM

^these are just stunning clips. Amazing work!

11-13-2011, 11:15 PM	#1
bobjones1943 Inactive Account Join Date: Nov 2011 Posts: 1	Sigma lenses help please G'day all just joined I am about to buy my first ever DSLR camera and am considering 2 Sigma lenses mainly for Astrophotography:- 8-16mm F4.5-5.6 DC HSM for wideview 17-50mm F2.8 EX DC OS HSM for general purposes Any comments/advice on these lenses please. Bob J

11-13-2011, 11:41 PM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 49,942	You can read about the sigma in our in-depth review- it's a nice lens (better than the Pentax counterpart...) DA* 16-50mm vs. Sigma and Tamron 17-50mm Comparison - Introduction Not sure about the 8-16mm: Sigma 8-16mm F4.5-5.6 DC HSM - Review Perhaps a slightly less wide lens would be better unless you really need the 8mm. Pentax SMCP-DA 12-24mm f/4 ED AL Autofocus Lens 21577 B&H Photo Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

11-14-2011, 12:24 AM	#3
walter Senior Member Join Date: Mar 2007 Location: California Photos: Gallery Posts: 239	The Sigma 8-16 has surprisingly little chromatic aberration for a wide angle lens, which is nice for the stars. Not really many other options that I know of if you're going to use the wide end of that lens. The corners and edges aren't as sharp as I would like, but that's probably true of most ultra wide lenses. I have a few night timelapse videos on vimeo if you want to get a feel for the lens, I think they were all taken with the Sigma 8-16. Vimeo Vimeo edit: wow, I didn't know it would auto-link a vimeo clip, that's pretty cool

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11-14-2011, 02:48 AM	#4
kent Veteran Member Join Date: May 2009 Location: Lithuania Photos: Gallery Posts: 344	^these are just stunning clips. Amazing work!

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Sigma lenses help please

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