Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
01-04-2014, 03:59 PM   #1
Senior Member
deadprez's Avatar

Join Date: Aug 2009
Location: Toronto
Posts: 113
70-200 2.8 on a k-3

Greetings forum,

Can anybody comment on the autofocus on the k-3 for the Tamy 70-200 vs. Sigma 70-200 vs. Da* 60-250 on the K-3.
Does the Sigma still outperform the other two lenses by a considerable margin ?

01-04-2014, 04:06 PM   #2
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 43,128
QuoteOriginally posted by deadprez Quote
Greetings forum,

Can anybody comment on the autofocus on the k-3 for the Tamy 70-200 vs. Sigma 70-200 vs. Da* 60-250 on the K-3.
Does the Sigma still outperform the other two lenses by a considerable margin ?
Because the K-3 has a faster screwdrive motor, the relative speed of the Tamron is going to feel improved over the K-5 II. But I'd still consider the Sigma to be the best lens for action.

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com's high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

01-04-2014, 06:41 PM   #3
owl
Forum Member




Join Date: Jun 2008
Location: Upstate New York, USA
Posts: 92
I like the lens optically but my keeper rate for moving targets with the K-5 is around 50% (that might not be too bad now that I think of it!). The K-3 definitely drives it more quickly in a point around the room test so I'm encouraged. Can't comment on the Sigma or Pentax as I don't have them.
01-04-2014, 07:19 PM   #4
Site Supporter
jpzk's Avatar

Join Date: Jan 2009
Location: Québec
Photos: Gallery | Albums
Posts: 7,256
QuoteOriginally posted by Adam Quote
Because the K-3 has a faster screwdrive motor, the relative speed of the Tamron is going to feel improved over the K-5 II. But I'd still consider the 70-200mm to be the best lens for action.
Which one ?

01-04-2014, 07:28 PM   #5
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 43,128
QuoteOriginally posted by jpzk Quote
Which one ?
Sigma, sorry!

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com's high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

01-04-2014, 07:50 PM   #6
Senior Member
deadprez's Avatar

Join Date: Aug 2009
Location: Toronto
Posts: 113
Original Poster
QuoteOriginally posted by Adam Quote
Sigma, sorry!
I hate you!
I wish you would just tell me the tamron is just as fast so that i could save $400 and not worry about motor issues.
01-04-2014, 08:05 PM   #7
Veteran Member




Join Date: Sep 2013
Posts: 306
Sigma has HSM so Sigmas AF will be much more quiet than Tamron AF. This will make big difference in some places where noise is not good idea.
01-04-2014, 09:17 PM   #8
Senior Member
deadprez's Avatar

Join Date: Aug 2009
Location: Toronto
Posts: 113
Original Poster
QuoteOriginally posted by Joojoo2010 Quote
Sigma has HSM so Sigmas AF will be much more quiet than Tamron AF. This will make big difference in some places where noise is not good idea.
Shooting mostly sports and outdoors so noise is a non issue.

01-04-2014, 10:03 PM   #9
Inactive Account




Join Date: Feb 2011
Location: Chicago
Posts: 39
The Tamron focusing still occasionally gets lost on the K3 as it did on my K5. I'm not sure if it's something with the lens but I have heard others describing the same type of problem. I'm very happy with the Sigma OS version. It's also very quiet and fast!
01-05-2014, 06:30 AM   #10
Senior Member




Join Date: Feb 2011
Location: St.-Petersburg
Photos: Albums
Posts: 145
QuoteOriginally posted by Adam Quote
Because the K-3 has a faster screwdrive motor, the relative speed of the Tamron is going to feel improved over the K-5 II. But I'd still consider the Sigma to be the best lens for action.
I am not sure about it. I own two Sigma 50-500 - the first one is an old version (EX, non-OS, screwdriver), the second one is a current version (OS, non-EX, HSM). The first version is definitely faster than the second one. I shoot the sport with these lenses, shoot a lot of pictures per day and I think I can feel enough good even the small differencies in the AF speed between two these lenses.


P.S. It may be interesting to test the AF speed of DA* 4.0/60-250 with disabled SDM (screwdriver only).
01-05-2014, 09:12 AM   #11
Senior Member
deadprez's Avatar

Join Date: Aug 2009
Location: Toronto
Posts: 113
Original Poster
QuoteOriginally posted by Grokh Quote
P.S. It may be interesting to test the AF speed of DA* 4.0/60-250 with disabled SDM (screwdriver only).
I just sold this lens because of subpar auto focus speed.
Even if I still had it I would have a hard time playing with the internals of an expensive Da* lens.
With my luck I would mess up so bad that I would disable motor \ screw mount and the lens cap would probably no longer fit.
01-05-2014, 10:28 AM   #12
Senior Member




Join Date: Feb 2011
Location: St.-Petersburg
Photos: Albums
Posts: 145
Oh, you are the same like I myself.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
dslr, k-3, k3, pentax k-3, sigma, vs
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: K/M/A 3rd Party, 6 Zooms, 3 Primes, 1 TC, Tokina AT-X F2.8 and Vivitar Series 1 +more MightyMike Sold Items 90 12-29-2014 01:12 PM
Anyone with K-3+Tamron 70-200/2.8? JimmyDranox Pentax K-3 5 11-27-2013 04:40 PM
High School Football w/ Sigma 70-200 f/2.8 HSM on a K-5 Isnwm Photographic Technique 7 09-08-2012 12:20 PM
For Sale - Sold: Tokina 80-200/2.8 KA; K 135/2.5; M 200/4; Tamron 70-150/2.8 soft thomasxie Sold Items 6 02-26-2010 11:08 AM



All times are GMT -7. The time now is 10:42 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top