Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
10-02-2010, 12:55 PM   #76
Ash
Community Manager
Loyal Site Supporter
Ash's Avatar

Join Date: Mar 2007
Location: Toowoomba, Queensland
Photos: Gallery | Albums
Posts: 22,678
Original Poster
QuoteOriginally posted by akanarya Quote
good lens i think, i wanna get one later.
someone says it has some sticky aperture problem.
i didnt look the all topic because of lack of time.
has it that problem?
A quick search reveals a number of related threads:
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/116258-tamron-...-aperture.html
https://www.pentaxforums.com/forums/pentax-beginners-corner-q/115133-newbie-q...mm-f2-8-a.html
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/110883-pentax-...-70-200mm.html
amongst many others.

Yes, the sticky aperture lever is relatively common - easily fixed if the problem arises and worth the hassle of sending it back under warranty for repair.

10-03-2010, 12:32 AM   #77
Senior Member
Mr. B's Avatar

Join Date: Jan 2009
Location: Varaždin, Croatia, Europe
Photos: Gallery
Posts: 272
I tested the lens a few days ago.

From what I've read here about it being slooow to focus, I was expecting the lens to act like a half dead snail... Well, the focus was quick on my K10D. Maybe a bit faster than the kit lens. The focusing noise is also not so bad as I expected. It's of a little higher frequency than the kit lens but not all that noisy. The build quality was nice and the lens is not as heavy as I expected. All in all - I like it

Here's a test shot at 130mm at f2.8. I think this is pretty sharp wide open...

http://img375.imageshack.us/img375/4181/tamron030.jpg

In this one, the lens just focused in a snap and it was accurate as you can see.



On the other hand, I had some shots of a wall and a truck that were diagonal to my position and they were misfocused. Could that be just the diagonal that confused my camera? Anyone had misfocusing experience?
10-03-2010, 03:56 AM   #78
Ash
Community Manager
Loyal Site Supporter
Ash's Avatar

Join Date: Mar 2007
Location: Toowoomba, Queensland
Photos: Gallery | Albums
Posts: 22,678
Original Poster
Was any part of the image focused? The camera doesn't get confused - it just locks focus on the subject in the vicinity of the focus point, which may not be the intended point of focus you had in mind.

Anyway, no misfocusing that wasn't due to human error seen with my copy.
10-03-2010, 04:33 AM   #79
Senior Member
Mr. B's Avatar

Join Date: Jan 2009
Location: Varaždin, Croatia, Europe
Photos: Gallery
Posts: 272
Yes, the part of the image focused was behind the point I was aiming at. Some shots were OK, others back focused. Weird...

I found the lens selling locally at a good price, so I'll probably go and test it. I was aiming for the 50-135, but the price on this one is pretty hard to let go.

10-05-2010, 03:58 AM   #80
Senior Member
akanarya's Avatar

Join Date: Aug 2010
Location: Çankırı, Turkey
Posts: 210
QuoteOriginally posted by Ash Quote
A quick search reveals a number of related threads:
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/116258-tamron-...-aperture.html
https://www.pentaxforums.com/forums/pentax-beginners-corner-q/115133-newbie-q...mm-f2-8-a.html
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/110883-pentax-...-70-200mm.html
amongst many others.

Yes, the sticky aperture lever is relatively common - easily fixed if the problem arises and worth the hassle of sending it back under warranty for repair.
thanks ash,
then i understood that buying 2nd hand can be a problem and a bit more pricey, wright?
10-05-2010, 12:24 PM   #81
Ash
Community Manager
Loyal Site Supporter
Ash's Avatar

Join Date: Mar 2007
Location: Toowoomba, Queensland
Photos: Gallery | Albums
Posts: 22,678
Original Poster
I wouldn't think so - if the sale is by a reputable seller, the lens would have been tested even if inadvertently for the problem. If it survived the seller's use, then it should last a lifetime (no guarantees though). I can't see a used 70-200 being more pricey than a new one, but if you mean the total cost of repairing it as well as the sale price, then yes perhaps it may be but you'd be unlucky for this to happen...
10-10-2010, 04:46 AM   #82
Senior Member
Mr. B's Avatar

Join Date: Jan 2009
Location: Varaždin, Croatia, Europe
Photos: Gallery
Posts: 272
Bought it It was 2/3 of the price of a used 50-135 so I couldn't resist...
Focuses spot on at all focal lenghts, at least what I could see this morning.

Here's a shot, love the bokeh

10-10-2010, 12:56 PM   #83
Ash
Community Manager
Loyal Site Supporter
Ash's Avatar

Join Date: Mar 2007
Location: Toowoomba, Queensland
Photos: Gallery | Albums
Posts: 22,678
Original Poster
Good stuff.
Is that shot wide open?

10-10-2010, 01:01 PM   #84
Veteran Member
Jewelltrail's Avatar

Join Date: May 2008
Location: Rhode Island
Photos: Albums
Posts: 4,180
QuoteQuote:
Ash: Good stuff.
Is that shot wide open?
Agreed--very good stuff--according to my software, yes, this is in fact wide open.
10-11-2010, 11:42 AM   #85
Senior Member
Mr. B's Avatar

Join Date: Jan 2009
Location: Varaždin, Croatia, Europe
Photos: Gallery
Posts: 272
Yes, wide open. Thanks.

I even got a Hoya UV filter with it. I don't like them, but that's one big front element I don't want to scratch I'll post some more photos in a few days when I get some free time to shoot.
10-28-2010, 12:33 AM   #86
Veteran Member
Tommot1965's Avatar

Join Date: Sep 2010
Location: Perth Western Australia
Photos: Gallery | Albums
Posts: 1,026
anyone know if a tamron 70-200 updated lens is in the wind ?...how often to Tamron update their line up
10-30-2010, 11:50 AM   #87
Pentaxian




Join Date: Nov 2008
Location: Bangalore
Photos: Gallery
Posts: 2,435
Seems like it's not updated in a long time, we saw some failures even for recent purchase.

BTW, anyone owning it's little brother LD Di 70-300mm also and can share comparison pictures?
04-04-2011, 10:42 PM   #88
Pentaxian
mikeSF's Avatar

Join Date: Jan 2009
Location: East Bay Area, CA
Photos: Gallery
Posts: 5,523
I've been using the lens wide open and very pleased with the results. Here's one:

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!
images, k-mount, pentax lens, results, slr lens, softness
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
A variety of images with FA* 200/4 Macro (no bugs) - VLF competition images Marc Langille Post Your Photos! 28 08-22-2008 07:28 PM
Request for a Tamron 28-75 shot Katsura Pentax SLR Lens Discussion 2 09-21-2007 03:27 AM
Some flower shots with a tamron 18-200 (large images) rhermans Post Your Photos! 3 07-08-2007 01:50 AM



All times are GMT -7. The time now is 09:50 PM. | 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