Forgot Password
Pentax Camera Forums Home
 

View Poll Results: Is this DA*16-50mm good or bad?
Keep it -- it's good. 2388.46%
Return it or send it in for repair. 311.54%
Voters: 26. You may not vote on this poll

Reply
Show Printable Version Search this Thread
08-25-2008, 02:44 PM   #841
Veteran Member
PentaxPoke's Avatar

Join Date: Jan 2008
Location: Oklahoma
Posts: 1,411
Third DA*16-50. Will it be a "charm" or 3rd strike?

Just got my replacement in the mail from B&H after two very bad copies. Will the third try be a charm, or will it be 3 strikes and your out? Tests and results coming later this evening. Stay tuned...

08-25-2008, 08:15 PM   #842
Veteran Member
PentaxPoke's Avatar

Join Date: Jan 2008
Location: Oklahoma
Posts: 1,411
I think "Third times a charm!" Ive done lots of shooting at wide open apertures as well as stopped-down, in addition, a wide range of focal lengths. The lens behaves as is should so far. No decentering to speak of. Somewhat soft at 2.8 (like you would expect) and consistent improvement with smaller apertures (as it should.) I haven't noticed any of the really bad defects I saw on my other two copies. Posted below is a typical shot. I don't want to post everything. Since we know how sharp the center is, I posted the outer 25% of a picture on both the left and right side. This is typical.

I think I may have a winner!

Left side is first, then right side.


08-25-2008, 08:54 PM   #843
Veteran Member
morfic's Avatar

Join Date: Feb 2008
Location: San Antonio, TX
Photos: Gallery
Posts: 428
Looks just about what i am used to, surprised not to see a brickwall though, isn't this considered a "bad setup"?

Now go and enjoy it!

P-Missions/imgp2569.jpg i often rub my eyes that this is one of my "Let's throw in a 2.8 for fun" shots and i am that happy with it.

Hope you get to enjoy yours as much.

Glad you finally are happy, did i mention wheni saw Pentaxke say byebye, my brain read it as PentaxPoke? Guess that won't happen for real
08-25-2008, 09:04 PM   #844
Veteran Member
PentaxPoke's Avatar

Join Date: Jan 2008
Location: Oklahoma
Posts: 1,411
QuoteOriginally posted by morfic Quote
Looks just about what i am used to, surprised not to see a brickwall though, isn't this considered a "bad setup"?

Glad you finally are happy, did i mention wheni saw Pentaxke say byebye, my brain read it as PentaxPoke? Guess that won't happen for real
I took plenty pictures of brick walls when I got this lens. Believe me! I just didn't feel like showing them all. They confirmed that this was a keeper.

I won't be going anywhere...I'm not a insecure Pentax user; always wondering if the grass is greener. I have only had one problem with Pentax gear, and that is the DA*16-50 which is resolved now.

BTW, your images are excellent. That is quite a sharp picture for f2.8!

08-25-2008, 09:20 PM   #845
Veteran Member
morfic's Avatar

Join Date: Feb 2008
Location: San Antonio, TX
Photos: Gallery
Posts: 428
Thanks, although....i've been there often, but first time before midday, if you browse that gallery around you can now find the K20D was there, the Super Program too (wanted to make sure i got no issues there), and you can find the 30D and the EOS 3 were also there.

One of the things that most got me about the 16-50 was the fact it was 16x1.53, which compares favoribly to 28x1:

16x1.53: P-Missions/imgp2635.jpg
28x1: Concepcion/00550023.JPG

It's neat to see it side by side.

Yes, i was leaning against the same entrance door, due to limitations in film, the 28mm shot was at 1/8s back then (IS++, image stabilization was one item that sold me on K20D)
ahhh, i ramble, someone stop me, it's his celebration
08-26-2008, 02:41 PM   #846
Veteran Member
PentaxPoke's Avatar

Join Date: Jan 2008
Location: Oklahoma
Posts: 1,411
Update: Still looking good so far. The lens seems not quite as sharp from edge to edge, or at f2.8 as my Tamron 17-50 however. At some point I'll try to do a lens for lens test since it appears that I finally have an acceptable copy.

Stay tuned...
08-26-2008, 02:48 PM   #847
Veteran Member
roentarre's Avatar

Join Date: Oct 2006
Location: Melbourne, Australia
Posts: 11,794
It is good to see a positive spin on this zoom. Even though my zoom backfocuses bad but it survives in my camera bag for about 1 year now.
08-27-2008, 07:23 AM   #848
Site Supporter




Join Date: Jul 2008
Location: Illinois, USA
Photos: Gallery
Posts: 55
QuoteOriginally posted by PentaxPoke Quote
Update: Still looking good so far. The lens seems not quite as sharp from edge to edge, or at f2.8 as my Tamron 17-50 however. At some point I'll try to do a lens for lens test since it appears that I finally have an acceptable copy.

Stay tuned...
Actually that is in line with the photozone tests of DA*'s Tokina cousin and Tamron lenses on the Nikon mount.

At f/2.8, the Tamron beat the Tokina's resolution at just about all f.l.s, especially at the borders (except at 24mm, where the Tokina was pretty close).

At the wide end (16mm/17mm), the Tamron's resolution was better at the borders from f/4 thru f/8.

At 24mm, 35mm, and 50mm the resolution of the two lenses were fairly comparable at f/4 thru f/8 - trading off center and border higher ratings, although some of the differences were negligible.

The CA of the Tokina was also substantially worse than the Tamron at the wide-end at f/2.8; whereas the Tamron's vignetting was worse than the Tokina's throughout.

So based on this relatively valid comparison I would not be surprised if you found your Tamron 17-50mm f/2.8 beat the Pentax DA* lens for overall border to border sharpness, especially the extreme borders at f/2.8. That said, the Pentax DA* lens will still offer weather-proofing, SDM, and likely fairly comparable sharpness performance thru the balance of its range. Also, I think that the contrast and color rendition of the Pentax DA* 16-50mm f/2.8 lens is excellent.

08-30-2008, 06:12 PM   #849
Forum Member




Join Date: Aug 2008
Location: Vancouver
Posts: 55
16-50mm I think its a keeper! the cats like it

Shot with a k20d







Tests - they are about 8 megs each.

f2.8 @ 50mm - the corners aren't as sharp, but that's pretty typical from what i can tell.

http://northwestmr2.com/incoming/dutch/pictures/16-50_testshots/IMGP1589.jpg



f22 @ 50mm

http://northwestmr2.com/incoming/dutch/pictures/16-50_testshots/IMGP1590.jpg

ill get some 16mm tests up later.
08-30-2008, 06:31 PM   #850
Site Supporter
maxwell1295's Avatar

Join Date: Jan 2008
Location: Long Island, New York
Photos: Gallery
Posts: 2,704
Nice Birman!

Lens looks good too...
08-30-2008, 07:28 PM   #851
Veteran Member
roentarre's Avatar

Join Date: Oct 2006
Location: Melbourne, Australia
Posts: 11,794
The window light works like a treat. The colour in the eyes are really great.
08-30-2008, 08:02 PM   #852
Veteran Member
Jewelltrail's Avatar

Join Date: May 2008
Location: Rhode Island
Photos: Albums
Posts: 4,180
All the shots are very nice, but the beauty of the white cat, and the 16-50, against the green and black backdrop, is even more pronounced.
08-30-2008, 08:05 PM   #853
Veteran Member




Join Date: Jul 2007
Location: Hong Kong
Photos: Gallery
Posts: 431
Nice cats good capture. I also wishes I could have more chances to take pics of this kind.
08-31-2008, 03:46 PM   #854
Forum Member




Join Date: Aug 2008
Location: Vancouver
Posts: 55
QuoteOriginally posted by maxwell1295 Quote
Nice Birman!

Lens looks good too...
nice guess, its actually a ragdoll

Thanks for the positive comments guys. Really happy with this lens already.
08-31-2008, 10:41 PM   #855
Forum Member
TiminyCricket's Avatar

Join Date: Aug 2008
Location: New Jersey
Posts: 76
Beautiful cats! Beautiful pictures!
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!
k-mount, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Question to K-5 Owners kevinschoenmakers Pentax K-5 3 10-19-2010 06:40 PM
Question for K-X owners. dimebagdave Pentax DSLR Discussion 6 04-29-2010 05:17 AM
PZ-1P question(for owners) LongLiveVelvia Pentax Film SLR Discussion 3 10-09-2009 10:51 AM
A question for K7 owners dafiryde Pentax DSLR Discussion 26 09-05-2009 02:52 AM
Question for FA 28-70/4 owners Ivan Glisin Pentax SLR Lens Discussion 8 08-13-2007 01:08 PM



All times are GMT -7. The time now is 02:56 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