Sigma 17-70mm f/2.8-4.5 DC Macro

jbrowning · 07-15-2008, 06:46 PM

What do you all think of this lens. I am thinking about getting for macro shooting but also highschool indoor basketball.?

Thanks
Jim

bdery · 07-15-2008, 06:54 PM

Originally posted by jbrowning

What do you all think of this lens. I am thinking about getting for macro shooting but also highschool indoor basketball.?

Thanks
Jim

It does well enough for macro (though not a "true" macro), and is impressively sharp generally speaking, some say it rivals some primes. I can say that it is very satisfying for me, and is my everyday lens.

You can visit the Pentax Lenses database here and view other's opinion about it. You fill see that almost everyone who tried it loved it.

However, it might not be fast enough (fast as in wide aperture) for indoors basketball. Even though your eyes will tell you that lighting is good enough, in fact that is a low light environment. The Sigma is fast at the wide end of the zoom, but not so much at the tele end that you are likely to use. You could compensate by increasing the ISO value, but you can only increase so much... You would be better served by a faster lens (maybe a prime?) for that particular scene.

Another option would be the Tamson 24-75, also highly regarded and a constant f2,8 through the range. It,s not as wide as the Sigma, however, and I'm not sure about macro with this lens.

jamesm007 · 07-16-2008, 05:14 AM

I think its a great walk around lens for Pentax bodies given are limited choices in zoom walkarounds, this is up thier with the best for the money. However its not a dedicated macro, and probably not the best choice for indoor basketball games. I am guessing you want to get 'close' to the players and will need moderate telephoto. At the 50-70mm range the Sigma is not the fastest lens in the world you are looking at least f5.6 to get good IQ, I suppose you can up the iso and be OK, and if you want wide angle shots of the court and audience it will do that very well. So it will be a lens of compromise for you, in those situations. I am thinking as the other poster and maybe a prime, maybe a fast high quality mid-range telephoto, maybe a lens like the 18-250mm. Tough because you want macro and cover a whole basketball game indoors! IMO it seems the new Pentax 55-300mm would cover games well, a disclaimer I own that lens and love it. Its usable wide open and you would rarely need the 300mm f5.8 end, and from 55- ~200mm you will be more at f4.5 with sharp results better than the Sigma, but no macro.

jbrowning · 07-16-2008, 06:08 AM

Hi jamesm007 and bdery and thanks for your replies. Here is a little more info. I will also be using a 135 mm 2.8 lens for shooting down the court. All I'm looking for is a lense to shoot up close to maybe 1/2 court range. I will be using both my k10d and my k100d so one lens would be on each lens ready to go. As far as the macro function, I do like shooting macros and I do have a couple of macro lenses already. So this lens doesn't really need to be a macro lens at all. I hope this explains a little bit more of what equipment I am planning on using. So the 15 lens will be for shooting down the court and the 17-?? will be for shooting on the end of the court I will be standing at.

Thanks
Jim

bdery · 07-18-2008, 09:03 AM

Jm, in that case it seems you have your bases well covered. The Sigma could be a very balanced choice in your kit. It's not a 1:1 macro (it's 1:2,5 I think) but you can still get excellent results with it, just not as big an enlargment as witha true macro. And as a walkaround lens it's an excellent choice.

My advice, based on your last post, would be to go to a store and test one. If it pleases you (ergonomy, etc) then go for it!

jbrowning · 07-18-2008, 01:41 PM

Thanks bdery, that is the one I will probably order by the end of the weekend.

Thanks
Jim

iamweasel · 07-18-2008, 02:34 PM

I have this lens for almost a month now. I went to San Francisco for the first time last weekend and it never left my K10D.

jbrowning · 07-18-2008, 06:29 PM

Thanks iamweasel I can't wait to get this lens. Oh and by the way I have already ordered it, so next week I should have it in my hands.

Jim

Anders · 07-19-2008, 03:38 AM

I love it very much

Dr Windmill · 07-19-2008, 09:06 AM

Hey, Jim. Mine arrives tomorrow.

jbrowning · 07-19-2008, 11:41 PM

Cool I am feeling more and more positive about this purchase. Oh and Lawrence don't you be posting any pictures from that lens till I get mine!

Jim

stevo · 07-20-2008, 03:28 AM

I don't think you'll regret the purchase. It's a great general-purpose lens. Knocks spot off the kit lens, and while it's not a true macro it does get you pretty close.

**pentagor** · 07-20-2008, 03:36 AM

I have this lens for four months now. I don't regret the purchase and I'm very satisfied with the results. It is the lens I put on, when I do not know, what the subjects will be.

truonganh · 07-21-2008, 08:47 PM

What else can be said?
a: 17-70 at 58 f8.0 1/180s
b: 17-70 at 70mm wide open, 1/250s.. and you can make out the photographer's reflection in her twinkles

07-15-2008, 06:46 PM	#1
jbrowning Veteran Member Join Date: Sep 2007 Location: Colorado Photos: Gallery \| Albums Posts: 996	Sigma 17-70mm f/2.8-4.5 DC Macro What do you all think of this lens. I am thinking about getting for macro shooting but also highschool indoor basketball.? Thanks Jim

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07-15-2008, 06:54 PM	#2
bdery Pentaxian Join Date: Mar 2008 Location: Quebec city, Canada Photos: Gallery Posts: 9,357	Originally posted by jbrowning What do you all think of this lens. I am thinking about getting for macro shooting but also highschool indoor basketball.? Thanks Jim It does well enough for macro (though not a "true" macro), and is impressively sharp generally speaking, some say it rivals some primes. I can say that it is very satisfying for me, and is my everyday lens. You can visit the Pentax Lenses database here and view other's opinion about it. You fill see that almost everyone who tried it loved it. However, it might not be fast enough (fast as in wide aperture) for indoors basketball. Even though your eyes will tell you that lighting is good enough, in fact that is a low light environment. The Sigma is fast at the wide end of the zoom, but not so much at the tele end that you are likely to use. You could compensate by increasing the ISO value, but you can only increase so much... You would be better served by a faster lens (maybe a prime?) for that particular scene. Another option would be the Tamson 24-75, also highly regarded and a constant f2,8 through the range. It,s not as wide as the Sigma, however, and I'm not sure about macro with this lens.

07-16-2008, 05:14 AM	#3
jamesm007 Veteran Member Join Date: Jul 2008 Location: Detroit MI, USA Posts: 508	I think its a great walk around lens for Pentax bodies given are limited choices in zoom walkarounds, this is up thier with the best for the money. However its not a dedicated macro, and probably not the best choice for indoor basketball games. I am guessing you want to get 'close' to the players and will need moderate telephoto. At the 50-70mm range the Sigma is not the fastest lens in the world you are looking at least f5.6 to get good IQ, I suppose you can up the iso and be OK, and if you want wide angle shots of the court and audience it will do that very well. So it will be a lens of compromise for you, in those situations. I am thinking as the other poster and maybe a prime, maybe a fast high quality mid-range telephoto, maybe a lens like the 18-250mm. Tough because you want macro and cover a whole basketball game indoors! IMO it seems the new Pentax 55-300mm would cover games well, a disclaimer I own that lens and love it. Its usable wide open and you would rarely need the 300mm f5.8 end, and from 55- ~200mm you will be more at f4.5 with sharp results better than the Sigma, but no macro.

07-16-2008, 06:08 AM	#4
jbrowning Veteran Member Join Date: Sep 2007 Location: Colorado Photos: Gallery \| Albums Posts: 996 Original Poster	Hi jamesm007 and bdery and thanks for your replies. Here is a little more info. I will also be using a 135 mm 2.8 lens for shooting down the court. All I'm looking for is a lense to shoot up close to maybe 1/2 court range. I will be using both my k10d and my k100d so one lens would be on each lens ready to go. As far as the macro function, I do like shooting macros and I do have a couple of macro lenses already. So this lens doesn't really need to be a macro lens at all. I hope this explains a little bit more of what equipment I am planning on using. So the 15 lens will be for shooting down the court and the 17-?? will be for shooting on the end of the court I will be standing at. Thanks Jim

07-18-2008, 09:03 AM	#5
bdery Pentaxian Join Date: Mar 2008 Location: Quebec city, Canada Photos: Gallery Posts: 9,357	Jm, in that case it seems you have your bases well covered. The Sigma could be a very balanced choice in your kit. It's not a 1:1 macro (it's 1:2,5 I think) but you can still get excellent results with it, just not as big an enlargment as witha true macro. And as a walkaround lens it's an excellent choice. My advice, based on your last post, would be to go to a store and test one. If it pleases you (ergonomy, etc) then go for it!

07-18-2008, 01:41 PM	#6
jbrowning Veteran Member Join Date: Sep 2007 Location: Colorado Photos: Gallery \| Albums Posts: 996 Original Poster	Thanks bdery, that is the one I will probably order by the end of the weekend. Thanks Jim

07-18-2008, 02:34 PM	#7
iamweasel Junior Member Join Date: Jun 2008 Location: Los Angeles Posts: 49	I have this lens for almost a month now. I went to San Francisco for the first time last weekend and it never left my K10D.

07-18-2008, 06:29 PM	#8
jbrowning Veteran Member Join Date: Sep 2007 Location: Colorado Photos: Gallery \| Albums Posts: 996 Original Poster	Thanks iamweasel I can't wait to get this lens. Oh and by the way I have already ordered it, so next week I should have it in my hands. Jim

07-19-2008, 03:38 AM	#9
Anders New Member Join Date: Nov 2006 Location: Tongeren Belgium Posts: 3	I love it very much

07-19-2008, 09:06 AM	#10
Dr Windmill Senior Member Join Date: Sep 2006 Location: Sequim, WA Posts: 198	Hey, Jim. Mine arrives tomorrow.

07-19-2008, 11:41 PM	#11
jbrowning Veteran Member Join Date: Sep 2007 Location: Colorado Photos: Gallery \| Albums Posts: 996 Original Poster	Cool I am feeling more and more positive about this purchase. Oh and Lawrence don't you be posting any pictures from that lens till I get mine! Jim

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07-20-2008, 03:28 AM	#12
stevo Junior Member Join Date: May 2007 Location: UK Posts: 42	I don't think you'll regret the purchase. It's a great general-purpose lens. Knocks spot off the kit lens, and while it's not a true macro it does get you pretty close.

07-20-2008, 03:36 AM	#13
pentagor Site Supporter Join Date: Dec 2007 Location: Ljubljana, Slovenia Posts: 495	I have this lens for four months now. I don't regret the purchase and I'm very satisfied with the results. It is the lens I put on, when I do not know, what the subjects will be.