Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
05-31-2020, 01:32 AM   #1
Site Supporter
Site Supporter




Join Date: Feb 2017
Posts: 396
Cameraville's comparison between DFA* 70-200 and Tamron 70-180


Seems like the Pentax star doesn't shine as it should.

05-31-2020, 02:11 AM   #2
Loyal Site Supporter
Loyal Site Supporter
pschlute's Avatar

Join Date: Mar 2007
Location: Surrey, UK
Photos: Gallery
Posts: 4,086
QuoteOriginally posted by BarneyL Quote
Seems like the Pentax star doesn't shine as it should.
I would ask the reviewer why he is using raw (unprocessed ?) files to do a comparison ?

Oh , and don't shoot landscapes at f2.8 folks.

Seriously, his issue could be simply that the lens and camera need a bit of AF/FA
05-31-2020, 02:13 AM - 1 Like   #3
Moderator
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
Posts: 6,997
There are such things as "bad" copies, even with a * lens. That's why Modern/Popular Photography would obtain for their tests three copies of a lens from three different sources (and never directly from "Brand" or distributor to avoid cherry picking).
05-31-2020, 02:19 AM   #4
Site Supporter
Site Supporter




Join Date: Feb 2017
Posts: 396
Original Poster
Guy says in the comments, it's his 4th sample of the lens.

I have this lens, and I'm not too bothered by focus breathing. The sharpness at wide open is OK, I'm not blown away by it, but I don't see it as soft. Plus it has quite nice rendering.

05-31-2020, 03:46 AM - 1 Like   #5
Loyal Site Supporter
Loyal Site Supporter
pschlute's Avatar

Join Date: Mar 2007
Location: Surrey, UK
Photos: Gallery
Posts: 4,086
QuoteOriginally posted by BarneyL Quote
it's his 4th sample of the lens
All of which could be fine, but his camera needs adjusting. My K1 requires between +6 and +10 for AF/FA with all my lenses. It is the k1 sensor that needs the adjustment.
05-31-2020, 05:46 AM - 1 Like   #6
Pentaxian




Join Date: Oct 2010
Photos: Gallery | Albums
Posts: 4,641
I have also *70-200. My copy is quite nice even wide open. Have to say that Tamron is sharp, yes. That onionring bokeh is just plain ugly. They should not have done that. As has been said before. Sharpness is not the only criteria of a good photo. Move on!

---------- Post added 05-31-20 at 15:49 ----------

QuoteOriginally posted by pschlute Quote
All of which could be fine, but his camera needs adjusting. My K1 requires between +6 and +10 for AF/FA with all my lenses. It is the k1 sensor that needs the adjustment.
You can see in those two boring shots that in Pentax sample greens at the front are in focus, where Tamron is Oof. Especially from 2,8-4. What is remarkable is that it is so in every photo..

Now that I think of it, that was the issue with his previous video about DFA*70-200 vs. Something also.
05-31-2020, 06:53 AM   #7
Pentaxian




Join Date: Apr 2016
Posts: 482
The DFA* is super sharp from wide open. Clearly the reviewer has an issue on his end.

And I'm surprised at his approach to this review. Normally he's kissing Pentax's tripod mount but this time it's the complete opposite. I sense he's also annoyed at the fact that he's gone through 4 copies.
05-31-2020, 07:33 AM - 1 Like   #8
Site Supporter
Site Supporter
ffking's Avatar

Join Date: Nov 2015
Location: Poole
Posts: 4,862
He seems to have consistently have had problems with this lens, from the first review - like Northrup, he makes too big a deal of focus breathing, but he's never got the image quality out of the lens that mine gives - maybe I'm just lucky!

05-31-2020, 07:48 AM   #9
Pentaxian




Join Date: Oct 2010
Photos: Gallery | Albums
Posts: 4,641
To me it looks like this lens has problem with him. I also have sharp copy..
05-31-2020, 08:21 AM - 1 Like   #10
Loyal Site Supporter
Loyal Site Supporter
pschlute's Avatar

Join Date: Mar 2007
Location: Surrey, UK
Photos: Gallery
Posts: 4,086
He also has a very annoying style. Cannot bear watching him.
05-31-2020, 10:10 AM   #11
sbh
Site Supporter
Site Supporter
sbh's Avatar

Join Date: Oct 2012
Location: Black Forest
Photos: Gallery
Posts: 720
QuoteOriginally posted by HarisF1 Quote
The DFA* is super sharp from wide open. Clearly the reviewer has an issue on his end.

And I'm surprised at his approach to this review. Normally he's kissing Pentax's tripod mount but this time it's the complete opposite. I sense he's also annoyed at the fact that he's gone through 4 copies.
I went through 3 copies and all suffered from decentering in different variations even at f/8. The seller refused to send me another copy and I also lost interest in this lens as I already have the 60-250 debaffled. But from what I saw, I can imagin that it is an excellent lens when you have a good copy.
05-31-2020, 10:25 AM - 1 Like   #12
Otis Memorial Pentaxian
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 36,219
Question...why not shoot both lenses on the Sony? Cameraville is well-known for being sloppy in both their reviews and comparisons. Oh, and in regards to focus breathing...if you have internal focus, you are going to have focus breathing.


Steve
05-31-2020, 12:11 PM - 5 Likes   #13
Pentaxian




Join Date: Oct 2010
Photos: Gallery | Albums
Posts: 4,641
Here is basically first shot with my 70-200 wide open. (bought it from Shanghai)









I have plenty of these. I know it is small photos, but even from there you can see that @ 2,8 already it is sharp, beautiful colour, and no onionbokeh. That alone would be dealbreaker for me. I knew about focusbreathing(actually one can read it even from technical spec list, before buying, but who looks at these things anyway)... I understand if onehas bad copy. One thing what is possible is that camera has to be re-calibrated, with the lens/lenses at the factory. I'm lucky wiht my K-1 in that way. none of my lenses had to be send back so far. Some oldies suffer from a lot of things(which is normal me thinks), but none of these new ones I bought new.
05-31-2020, 12:18 PM   #14
Site Supporter
Site Supporter
ffking's Avatar

Join Date: Nov 2015
Location: Poole
Posts: 4,862
QuoteOriginally posted by repaap Quote
Here is basically first shot with my 70-200 wide open. (bought it from Shanghai)
Nice!
05-31-2020, 12:24 PM   #15
Pentaxian




Join Date: Oct 2010
Photos: Gallery | Albums
Posts: 4,641
QuoteOriginally posted by ffking Quote
Nice!
Thanks IMHO it is superb lens. Sure it has weaknesses, like any other lens has. But for me it is perfect for what it is, I still want/use other lenses for other things.
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!
comparison between dfa*, k-mount, k1, pentax, pentax lens, slr lens, tamron
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
the CameraVille Compares K-1, D810, and A7r FozzFoster Pentax DSLR Discussion 4 05-22-2020 07:38 AM
The CameraVille image quality comparison K-1 vs K-1 MKII alpheios Pentax K-1 31 04-04-2020 05:28 PM
For Sale - Sold: Sigma 180/3.5 Macro, Tamron 180/2.5, FA*300/4.5, DA*60-250/4(FF modified) and more Greyser Sold Items 48 10-27-2019 05:07 PM
Dilemma: Portrait Shooting between DFA 24-70 or DFA 70-200 Gerard_Dirks Pentax SLR Lens Discussion 22 10-05-2017 04:34 PM
Dfa 70 200 vs tamron 70 200 sjyoon20904 Pentax SLR Lens Discussion 22 03-23-2016 04:05 PM



All times are GMT -7. The time now is 07:02 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