Need help on lenses
May 16, 2012 13:16:15 #
shelton
Loc: jacksonville fl
I"m looking to buy a used Lense from B&H for my pentax. sigma 17-70mm 2.8-4 or the pentax 17-70 f/4 which one will be best for me to buy.
Joe.
Joe.
May 16, 2012 13:17:04 #
shelton wrote:
I"m looking to buy a used Lense from B&H for my pentax. sigma 17-70mm 2.8-4 or the pentax 17-70 f/4 which one will be best for me to buy.
Joe.
Joe.
Do you know what the f/stop difference between them means?
May 17, 2012 06:09:50 #
At 17mm the Sigma would have a wide open f stop of 2.8 and as you go out to 70mm the f stop increases to 4. The Pentax would be fixed at all focal lengths at 4. I personally prefer Sigma lenses and if you are going to shoot some wide angle in low light the Sigma would be the better choice.
May 17, 2012 13:24:13 #
kenArchi
Loc: Seal Beach, CA
Goto www.lenstip.com The Sigma image resolution is better than Nikon, Pentax, and Canon is last.
This Sigma lens is also superior in edge sharpness over the others.
This makes it good for landscape and architectural work.
This would be a good lens for architectural and landscape to portrait work.
Ken
This Sigma lens is also superior in edge sharpness over the others.
This makes it good for landscape and architectural work.
This would be a good lens for architectural and landscape to portrait work.
Ken
May 17, 2012 13:47:56 #
shelton wrote:
I"m looking to buy a used Lense from B&H for my pentax. sigma 17-70mm 2.8-4 or the pentax 17-70 f/4 which one will be best for me to buy.
Joe.
Joe.
What is the price difference? Also the Pentax lens will have the SDM focusing system, which, when it works is nice.
May 17, 2012 17:11:50 #
Here is the review for the Pentax on Pentaxforums
http://www.pentaxforums.com/lensreviews/SMC-Pentax-DA-17-70mm-F4-SDM-Zoom-Lens.html
Here is the one for the Sigma
http://www.pentaxforums.com/lensreviews/SMC-Pentax-DA-17-70mm-F4-SDM-Zoom-Lens.html
I trust the reviews on here more than others because most sites do no testing with Pentax
http://www.pentaxforums.com/lensreviews/SMC-Pentax-DA-17-70mm-F4-SDM-Zoom-Lens.html
Here is the one for the Sigma
http://www.pentaxforums.com/lensreviews/SMC-Pentax-DA-17-70mm-F4-SDM-Zoom-Lens.html
I trust the reviews on here more than others because most sites do no testing with Pentax
May 17, 2012 19:31:19 #
shelton wrote:
I"m looking to buy a used Lense from B&H for my pentax. sigma 17-70mm 2.8-4 or the pentax 17-70 f/4 which one will be best for me to buy.
Joe.
Joe.
Here we go again. Which kind of images do you like to capture? Alot of folks ask "which this" or "what that" and it's difficult to give a decent answer if we don't know the specifics. Lens info is easy enough to get, but what exactly, are ya takin' pix of? :thumbup: 8-)
May 17, 2012 20:16:36 #
C. David wrote:
Here we go again. Which kind of images do you like to capture? Alot of folks ask "which this" or "what that" and it's difficult to give a decent answer if we don't know the specifics. Lens info is easy enough to get, but what exactly, are ya takin' pix of? :thumbup: 8-)
shelton wrote:
I"m looking to buy a used Lense from B&H for my pentax. sigma 17-70mm 2.8-4 or the pentax 17-70 f/4 which one will be best for me to buy.
Joe.
Joe.
Here we go again. Which kind of images do you like to capture? Alot of folks ask "which this" or "what that" and it's difficult to give a decent answer if we don't know the specifics. Lens info is easy enough to get, but what exactly, are ya takin' pix of? :thumbup: 8-)
Good point. I would also check http://www.dxomark.com/ for lens comparisons.
May 17, 2012 20:47:56 #
fast glass rules
pretty much end of conversation.
UNTIL you factor in the cost versus budget thing.
QWhat are you willing to spend for the precious F stops?
Much like drag racing SPEED COSTS, how much are you wiulling to spend>???
I vote for the added expense of the faster glass, opinions may vary
pretty much end of conversation.
UNTIL you factor in the cost versus budget thing.
QWhat are you willing to spend for the precious F stops?
Much like drag racing SPEED COSTS, how much are you wiulling to spend>???
I vote for the added expense of the faster glass, opinions may vary
May 17, 2012 22:55:31 #
I would go with the faster glass also, but since Shelton has not responded as to which images he wants to capture how do we possibly answer this question :?: MORE info, please Shelton. 8-)
May 19, 2012 18:37:32 #
shelton
Loc: jacksonville fl
I like to shot landscapes and portraits.I know about fstops but I:m confused between deferent fstops fo the 2.8-4- sigma. price $379 pentax f-4 price $399
May 19, 2012 18:57:22 #
shelton
Loc: jacksonville fl
[quote=shelton]I like to shot landscapes and portraits.I know about fstops but for the 2.8-4- sigma. price $379 pentax f-4 price $399.which one will be the best to buy.
May 22, 2012 00:30:49 #
[quote=shelton]
Go with the f-4. The cost difference isn't that much and you might like it if you ever upgrade the camera body. Just a thought. :thumbup: 8-)
shelton wrote:
I like to shot landscapes and portraits.I know about fstops but for the 2.8-4- sigma. price $379 pentax f-4 price $399.which one will be the best to buy.
Go with the f-4. The cost difference isn't that much and you might like it if you ever upgrade the camera body. Just a thought. :thumbup: 8-)
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