Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
04-01-2009, 05:58 AM   #16
Veteran Member




Join Date: Mar 2007
Location: Boston, PRofMA
Photos: Albums
Posts: 3,053
Original Poster
QuoteOriginally posted by dadipentak Quote
Noticeably soft wide open
That's the main negative. The Tamron is supposedly sharp wide open and sharper stopped down...

04-01-2009, 02:36 PM   #17
Veteran Member
Denis's Avatar

Join Date: Jan 2007
Location: St-Albert, Alberta, Canada
Posts: 333
QuoteOriginally posted by kenyee Quote
That's the main negative. The Tamron is supposedly sharp wide open and sharper stopped down...
It is funny that you make such a statement. I own the Sigma and have seen the Tamron. The difference in IQ is difficult to see. The advantage of the Sigma is the quiet and fast focus, including the manual adjustment. Published reviews of any items does not sway my selection. I have an acquaintance that does reviews on telescopes items. His comments were "Balance". If you don't include a slight negative and positive to your review the public will react believing you are leaning toward certain product brands. He told me the best way is to try one and see if the results meet your market expectations for the money paid. If not keep your wallet closed. The Tamron has usable market place including the Sigma. Both in my opinion will meet general expectations but not all. Quiet and fast focus using HSM with good IQ results were the reasons I chose the Sigma. It is in the end a matter of choice.
04-01-2009, 04:19 PM   #18
Site Supporter




Join Date: Apr 2008
Location: Cambridge, MA
Posts: 138
All of these comments seem consistent with the generally positive reviews and opinions on the Sigma. However, I, as was Kenyee, remain concerned that a reputable camera rental agency is phasing out the Sigma due to motor problems with a significant percentage of their rental lenses. Is theirs “bad luck” or, after time and use, DO the Sigma wear out. I too am about to buy the Sigma, and hope to be dissuaded of my concerns.
04-01-2009, 04:44 PM   #19
Pentaxian
Arpe's Avatar

Join Date: Sep 2006
Location: New Zealand
Photos: Gallery | Albums
Posts: 4,331
QuoteOriginally posted by kenyee Quote
Yes, you'll have better luck shooting sports w/ the Sigma than the Tamron. Someone on DPR said the Sigma 70-200 HSM was the first lens he used that worked w/ AF-C (was fast enough) mode.
That's bull. I've got the first version of the lens - no HSM. I shoot sports a lot, quite successfully. Though the HSM may give me more keepers.

04-01-2009, 05:52 PM   #20
Veteran Member




Join Date: Mar 2007
Location: Boston, PRofMA
Photos: Albums
Posts: 3,053
Original Poster
QuoteOriginally posted by Arpe Quote
That's bull. I've got the first version of the lens - no HSM. I shoot sports a lot, quite successfully. Though the HSM may give me more keepers.
That last statement is probably what he meant. Any lens and camera is capable of being used for sports. The question is whether you get 20% of your shots being keepers or 40% or 80%. The 1DmkII folks seems to always assume 100% but I'd be happy w/ 70%

tmacdon: you're nearby. Good to see another Pentaxian in the Boston area
04-01-2009, 06:02 PM   #21
Veteran Member
palmor's Avatar

Join Date: Dec 2006
Location: North of Boston, MA
Posts: 798
QuoteOriginally posted by kenyee Quote

tmacdon: you're nearby. Good to see another Pentaxian in the Boston area
There are a few of us around
04-01-2009, 06:22 PM   #22
Veteran Member
OregonJim's Avatar

Join Date: Mar 2009
Location: Willamette Valley, Oregon
Posts: 1,329
QuoteOriginally posted by kenyee Quote
tmacdon: you're nearby. Good to see another Pentaxian in the Boston area
You wouldn't know it by my sig, but I spent the first half of my life around Boston (Lynn, Swampscott, Revere, Peabody, Salem, etc.)
04-01-2009, 08:01 PM   #23
Senior Member




Join Date: Dec 2008
Location: AZ
Posts: 285
I have it and very pleased w/ it. Used it recently wide open at 170mm 1/2500 handheld, still sharp even at 100%



full res, no sharpening here :

HERE

04-01-2009, 08:02 PM   #24
Site Supporter




Join Date: Apr 2008
Location: Cambridge, MA
Posts: 138
QuoteOriginally posted by kenyee Quote
That last statement is probably what he meant. Any lens and camera is capable of being used for sports. The question is whether you get 20% of your shots being keepers or 40% or 80%. The 1DmkII folks seems to always assume 100% but I'd be happy w/ 70%

tmacdon: you're nearby. Good to see another Pentaxian in the Boston area
Thanks, but we still do not know why the rental folks complain so bitterly about the Sigma 70-200, f2.8.

Maybe I 'll see you at Plum Island?
04-01-2009, 08:07 PM   #25
Veteran Member
palmor's Avatar

Join Date: Dec 2006
Location: North of Boston, MA
Posts: 798
QuoteOriginally posted by tmacdon Quote
Thanks, but we still do not know why the rental folks complain so bitterly about the Sigma 70-200, f2.8.

Maybe I 'll see you at Plum Island?
You mean someone else with a Pentax shoots at Plumb Island!?!? I don't believe it



John
04-01-2009, 09:07 PM   #26
Forum Member
juice's Avatar

Join Date: Sep 2007
Location: Gold Coast, Australia
Posts: 64
I'd like to answer your question but I have only had my 70-200 for about 3 weeks total, despite buying it back in November.

It came with pretty bad front focus. I'm not a pixel peeper or brickwaller, but some of my closeup shots (say around 3m/10ft or 5m/15ft) were soft when wide open. This was due to front focus. AF calibration charts confirmed it, and manual focussed shots were sharp.

So I sent it in for repair, with my K20D body.

Weeks later it eventually all turned up again, but despite CR Kennedy having it in the shop it still wasn't 100%. A little better, perhaps.

I did a wedding shoot after I got it back and was pretty pleased with the results but some photos again looked soft, even stopped down.

So I look down the lens barrel and the inside front two elements have some weird speckly imperfections on them! No idea what they were, it certainly wasn't dust. Scary stuff I know, so I sent it back in for repair. 10 weeks later, it still hasn't shown up. Apparently it had to go back to Sigma in Japan for a rebuild...

Despite all that, the times I've used the lens it has been a joy. The autofocus is fast and silent and there is a really nice feel to the lens. Yes it's big and yes it's heavy, but these are the compromises you have to make with a 70-200 f2.8.
04-02-2009, 05:42 AM   #27
Inactive Account




Join Date: Mar 2007
Location: James City County, Virginia
Photos: Gallery
Posts: 322
I have owned the lens since Dec '08 and find it to be a wonderful piece of gear. It is well engineered and rock solid. I have experienced no focus issues. It is heavy and takes some getting used to. I would not hesitate to purchase the lens again.
04-02-2009, 06:25 AM   #28
Site Supporter




Join Date: Apr 2008
Location: Cambridge, MA
Posts: 138
That's one of the reasons why I want the Sigma. as well as for Maine, Cape Cod and Latin America (where I "work.")

QuoteOriginally posted by palmor Quote
You mean someone else with a Pentax shoots at Plumb Island!?!? I don't believe it



John
04-02-2009, 06:33 AM   #29
Veteran Member




Join Date: Mar 2007
Location: Boston, PRofMA
Photos: Albums
Posts: 3,053
Original Poster
QuoteOriginally posted by tmacdon Quote
Thanks, but we still do not know why the rental folks complain so bitterly about the Sigma 70-200, f2.8.
Maybe I 'll see you at Plum Island?
If they truly had 3 out of 6 croak on them, that's a good enough reason. I'm just wondering whether it was because of heavy usage or travel via UPS that did the lenses in. I'm guessing UPS, so I'm probably going to give the Sigma a try. I just wish MS would crank up the fleabay cashback to 20% again

If I get a Tamron 300/2.8 adaptall, I'll be chasing eagles up at Plum Island. If not, I'll be trying fishing a few times up there this year (w/o the DSLR..it wouldn't survive dunking
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!
hsm, issues, k-mount, lens, pentax lens, sigma, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Old sigma 70-200 vs New hsm 70-200 41ants Pentax SLR Lens Discussion 3 07-14-2010 06:38 AM
Sigma 17-70mm F2.8-4 HSM OS Users jjynwa Pentax SLR Lens Discussion 2 04-22-2010 05:05 AM
Anyone used Sigma 70-200 non-HSM AND HSM? which is faster AF? Arpe Pentax SLR Lens Discussion 10 03-24-2010 04:28 PM
Sigma 70-200 HSM Test Photos @ 200/2.8 and 5.6 joelovotti Pentax SLR Lens Discussion 7 11-09-2008 06:19 PM



All times are GMT -7. The time now is 12:33 AM. | See also: NikonForums.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