70-200 2.8: Sigma vs Tamron


Nenix

Link Posted 24/09/2013 - 17:41
I've tried to take photo of a football game with my Pentax DA 50-135, but it's just a little to short and the AF to slow (sometimes).

Tamron has better picture's quality, Sigma is faster but it's more expensive. The Sigma II Macro HSM (old version) is even faster then Tamron? And the Tamron is faster then my 50-135?

I really don't know
PENTAX K-5IIs: DAL 18-55mm WR, DA 50-135mm, DA 55-300, DA 17-70, Tamron Sp 90 2.8 macro
Last Edited by Nenix on 24/09/2013 - 17:42

vic cross

Link Posted 24/09/2013 - 20:37
I don't know how good they are as I don't own either but you have the reach with your 50-200 and your 55-300. what's wrong with them??????????
CHEERS Vic.
Born again biker with lots of Pentax bits. Every day I wake up is a good day. I'm so old I don't even buy green bananas.

cabstar

Link Posted 24/09/2013 - 22:28
vic cross wrote:
I don't know how good they are as I don't own either but you have the reach with your 50-200 and your 55-300. what's wrong with them??????????
CHEERS Vic.

Apertures are to slow for football need a 2.8 lens to get high shutter speeds. Would it be worth getting the af on the 50-135 upgraded by JPS? This makes a difference to focussing speed apparently.
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Currently on a Pentax hiatus until an FF Pentax is released

cabstar

Link Posted 24/09/2013 - 22:28
The new sigma os 70-200mm is supposed o be excellent by the way.
PPG Wedding photography Flickr
Concert photography

Currently on a Pentax hiatus until an FF Pentax is released

Mike-P

Link Posted 24/09/2013 - 22:33
IMO the newer Sigma 70-200mm 2.8 OS is both faster and has better IQ/sharpness than the Tamron. The Sigma has faster af than the 50-135mm but I would say the Pentax is slightly sharper.
. My Flickr

Fletcher8

Link Posted 24/09/2013 - 23:23
cabstar wrote:
vic cross wrote:
I don't know how good they are as I don't own either but you have the reach with your 50-200 and your 55-300. what's wrong with them??????????
CHEERS Vic.

Would it be worth getting the af on the 50-135 upgraded by JPS? This makes a difference to focussing speed apparently.

Gary, have you had this done with your 50 -135? JPS can you expand and tell me more please? cost etc.

Many thanks

Fletcher8
Fletcher8.

cabstar

Link Posted 25/09/2013 - 01:04
I havent but mike p has if i remember correctly he was pleased with the result.
PPG Wedding photography Flickr
Concert photography

Currently on a Pentax hiatus until an FF Pentax is released

Nenix

Link Posted 25/09/2013 - 17:27
Fletcher8 wrote:
cabstar wrote:
Quote:
I don't know how good they are as I don't own either but you have the reach with your 50-200 and your 55-300. what's wrong with them??????????
CHEERS Vic.

Would it be worth getting the af on the 50-135 upgraded by JPS? This makes a difference to focussing speed apparently.

Gary, have you had this done with your 50 -135? JPS can you expand and tell me more please? cost etc.

Many thanks

Fletcher8

JPS? I've never heard of it.
PENTAX K-5IIs: DAL 18-55mm WR, DA 50-135mm, DA 55-300, DA 17-70, Tamron Sp 90 2.8 macro
Last Edited by Nenix on 25/09/2013 - 17:29

johnriley

Link Posted 25/09/2013 - 17:47
JPS is the official repairer for Pentax in the UK. If you go to the Pentax UK website you'll find their info under the servicing heading.
Best regards, John

Nenix

Link Posted 25/09/2013 - 21:53
Thanks
PENTAX K-5IIs: DAL 18-55mm WR, DA 50-135mm, DA 55-300, DA 17-70, Tamron Sp 90 2.8 macro

vic cross

Link Posted 26/09/2013 - 08:48
cabstar wrote:
vic cross wrote:
I don't know how good they are as I don't own either but you have the reach with your 50-200 and your 55-300. what's wrong with them??????????
CHEERS Vic.

Apertures are to slow for football need a 2.8 lens to get high shutter speeds. Would it be worth getting the af on the 50-135 upgraded by JPS? This makes a difference to focussing speed apparently.

Unless he wants shallow DOF what's wrong with "upping" the ISO, modern cameras are getting better each generation.
CHEERS Vic.
Born again biker with lots of Pentax bits. Every day I wake up is a good day. I'm so old I don't even buy green bananas.

johnriley

Link Posted 26/09/2013 - 09:36
K-5 is good to ISO1600 without any caveat. Beyond that it's still very usable, albeit it with gradually more intrusive noise.
Best regards, John

amilner

Link Posted 29/09/2013 - 11:52
Unless you want the shallow DOF you might be better upgrading the camera body to the K50 or KII and using higher ISO and your 50-200. It would be cheaper!
Tony Milner
Super A, ME Super, MZ6, K5II, Ricoh GR & lenses from 8-500mm
www.amilner.org www.flickr.com/photos/tonymilner

sbrads

Link Posted 02/10/2013 - 22:32
The Tamron 70-200 is sharp as a tack at f4 and wipes the floor with the Pentax 50-200, I've got both. The 50-200 doesn't start to get sharp until f8 and then it's still behind the Tamron at f2.8. It's big and heavy being FF though.
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