Need some Help

Fl_Gulfer · 01-10-2009, 12:24 PM

Today is my birthday and I got enough money to get my a lens to complete my walk-around-kit. I have a Tamron 17-50mm f2.8, the Pentax DA* 50-135mm f2.8. Now I need a long zoom.
This is all I can find so far and was wondering I anyone knew of others?

Sigma 170-500mm f/5-6.3 APO DG Aspherical Autofocus Lens for Pentax AF

Sigma 50-500mm F4.0-6.3 APO EX RF HSM AF Pentax

Sigma 120-400mm f/4.5-5.6 DG HSM APO for Pentax

Fl_Gulfer · 01-10-2009, 01:27 PM

I can pick up a Sigma 135-400mm f/4.5-5.6 APO for $418.00 includes shipping and in execellent condition.
What do you guys think?

heatherslightbox · 01-10-2009, 02:20 PM

Not that I've had any experience with this lens myself, but I did find some sample images on Pbase.com that might help you in making your decision:
Sigma 135-400mm f/4.5-5.6 Aspherical Lens Sample Photos and Specifications

For further reference...
Sigma APO 120-400mm F4.5-5.6 DG OS HSM Lens Sample Photos and Specifications
Sigma 170-500mm f/5-6.3 DG RF APO Lens Sample Photos and Specifications
Sigma 50-500mm f/4-6.3 EX APO RF Lens Sample Photos and Specifications

HTH,
Heather

John Kovarik · 01-10-2009, 02:46 PM

I do not think those Sigma lenses are actually 'HSM' in the PTX mount - if this is important to you, you should check...............

Fl_Gulfer · 01-10-2009, 08:30 PM

Someone pointed me to this great post on the different lenses. And thanks you guys for your help also.
500mm tests using 4 lenses on K20D. [Page 1]: Pentax SLR Talk Forum: Digital Photography Review

Fl_Gulfer · 01-11-2009, 10:02 AM

I'm going to get the 150-500mm
Sigma | 150-500mm f/5-6.3 DG HSM APO Autofocus Lens | 737109

heatherslightbox · 01-11-2009, 04:18 PM

Great! Don't forget to post the LBA pics once you get it. I'm looking forward to seeing them.

Heather

Fl_Gulfer · 01-11-2009, 08:35 PM

Brandx posted these photo's of his lenses for people (In DP Preview) to see the difference in size. I just thought I'd show people here if its ok?
I can't believe how much bigger the 150-500 is to the Bigma. Is that because of the HSM?

Left to right: Sigma 150-500mm on a K20D, Sigma 50-500mm on a K100D, Sigma 170-500mm on a K10D, Pentax-A*300/4 + 1.7X AFA on a K10D, and for comparison the Pentax DA 50-135mm on a K2000.

Extended

Vylen · 01-11-2009, 09:02 PM

they all seem arm disfiguring either way :P

Aaron1971 · 01-12-2009, 02:21 PM

The next question of course is which one to buy????

01-10-2009, 12:24 PM	#1
Fl_Gulfer Veteran Member Join Date: Jul 2007 Location: Florida Gulfer Photos: Albums Posts: 3,054	Need some Help Today is my birthday and I got enough money to get my a lens to complete my walk-around-kit. I have a Tamron 17-50mm f2.8, the Pentax DA* 50-135mm f2.8. Now I need a long zoom. This is all I can find so far and was wondering I anyone knew of others? Sigma 170-500mm f/5-6.3 APO DG Aspherical Autofocus Lens for Pentax AF Sigma 50-500mm F4.0-6.3 APO EX RF HSM AF Pentax Sigma 120-400mm f/4.5-5.6 DG HSM APO for Pentax

01-10-2009, 01:27 PM	#2
Fl_Gulfer Veteran Member Join Date: Jul 2007 Location: Florida Gulfer Photos: Albums Posts: 3,054 Original Poster	I can pick up a Sigma 135-400mm f/4.5-5.6 APO for $418.00 includes shipping and in execellent condition. What do you guys think?

01-10-2009, 02:20 PM	#3
heatherslightbox Veteran Member Join Date: Nov 2007 Location: Gainesville, FL Photos: Gallery Posts: 2,599	Not that I've had any experience with this lens myself, but I did find some sample images on Pbase.com that might help you in making your decision: Sigma 135-400mm f/4.5-5.6 Aspherical Lens Sample Photos and Specifications For further reference... Sigma APO 120-400mm F4.5-5.6 DG OS HSM Lens Sample Photos and Specifications Sigma 170-500mm f/5-6.3 DG RF APO Lens Sample Photos and Specifications Sigma 50-500mm f/4-6.3 EX APO RF Lens Sample Photos and Specifications HTH, Heather

01-10-2009, 02:46 PM	#4
John Kovarik Veteran Member Join Date: Sep 2007 Location: West Virginia Photos: Gallery Posts: 338	I do not think those Sigma lenses are actually 'HSM' in the PTX mount - if this is important to you, you should check...............

01-10-2009, 08:30 PM	#5
Fl_Gulfer Veteran Member Join Date: Jul 2007 Location: Florida Gulfer Photos: Albums Posts: 3,054 Original Poster	Someone pointed me to this great post on the different lenses. And thanks you guys for your help also. 500mm tests using 4 lenses on K20D. [Page 1]: Pentax SLR Talk Forum: Digital Photography Review

01-11-2009, 10:02 AM	#6
Fl_Gulfer Veteran Member Join Date: Jul 2007 Location: Florida Gulfer Photos: Albums Posts: 3,054 Original Poster	I'm going to get the 150-500mm Sigma \| 150-500mm f/5-6.3 DG HSM APO Autofocus Lens \| 737109

01-11-2009, 04:18 PM	#7
heatherslightbox Veteran Member Join Date: Nov 2007 Location: Gainesville, FL Photos: Gallery Posts: 2,599	Great! Don't forget to post the LBA pics once you get it. I'm looking forward to seeing them. Heather

01-11-2009, 08:35 PM	#8
Fl_Gulfer Veteran Member Join Date: Jul 2007 Location: Florida Gulfer Photos: Albums Posts: 3,054 Original Poster	Brandx posted these photo's of his lenses for people (In DP Preview) to see the difference in size. I just thought I'd show people here if its ok? I can't believe how much bigger the 150-500 is to the Bigma. Is that because of the HSM? Left to right: Sigma 150-500mm on a K20D, Sigma 50-500mm on a K100D, Sigma 170-500mm on a K10D, Pentax-A*300/4 + 1.7X AFA on a K10D, and for comparison the Pentax DA 50-135mm on a K2000. Extended

01-11-2009, 09:02 PM	#9
Vylen Veteran Member Join Date: Dec 2008 Location: Sydney, Australia Photos: Gallery Posts: 1,262	they all seem arm disfiguring either way :P

01-12-2009, 02:21 PM	#10
Aaron1971 Senior Member Join Date: Sep 2008 Location: Yokosuka, Japan Photos: Gallery Posts: 162	The next question of course is which one to buy????

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