Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-26-2011, 01:17 PM   #16
Site Supporter
Site Supporter
Zygonyx's Avatar

Join Date: Jun 2011
Location: Ile de France
Posts: 3,100
Original Poster
You are right to introduce this remark.
I unfortunately didn't compare that way, but it would be great enough if the 25mm would achieve the recognized good to excellent performances of the 35mm.

07-27-2011, 01:55 PM   #17
Site Supporter
Site Supporter
Zygonyx's Avatar

Join Date: Jun 2011
Location: Ile de France
Posts: 3,100
Original Poster
Now let's have a look on the few samples taken with Kodak 160NC-2 film and 645NII with this 25mm lens.
The very wide scope make it a great pleasure to use it and gives interesting potential to compose.


ISO160, 1/90s, f/13


ISO160, 1/125s, f/13, -0,7EV


ISO160, 1/60s, f/9.5, -0.7EV


ISO160, 1/90s, f/11, -0.7EV



You can see on this 100% crop taken from a 7.8 MPix scan, that chromatic aberration is still a significant issue with film and full frame conditions @ f/11.

The absence of AL element could well be one of the reasons of this result, but let's hope Pentax will also improve the coating of this lens, before selling it.

Last edited by Zygonyx; 07-29-2011 at 08:06 AM.
07-27-2011, 03:39 PM   #18
Veteran Member




Join Date: Dec 2007
Location: Prague
Photos: Gallery
Posts: 1,198
Still it looks great, considering that it is possible to remove the aberations easily in PP, even in TIFF or Jpg.
07-27-2011, 11:10 PM   #19
Site Supporter
Site Supporter
Zygonyx's Avatar

Join Date: Jun 2011
Location: Ile de France
Posts: 3,100
Original Poster
Yes, you are right.

07-30-2011, 05:44 AM   #20
Site Supporter
Site Supporter
Zygonyx's Avatar

Join Date: Jun 2011
Location: Ile de France
Posts: 3,100
Original Poster
Also, an important feature for 645N2 body, the exifs including the focal lenght of this 25mm are correctly printed on the film.



ISO160, 1/180s, f/4.5

Last edited by Zygonyx; 07-30-2011 at 06:26 AM.
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!
25mm, barrel, bodies, camera, correctable, film, filter, lens, medium format, pentax, shots
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rumor of Pentax D FA 645 25mm f/4 Noisychip Pentax News and Rumors 94 04-24-2011 02:41 PM
PentaX D-FA645 25mm f/4 Digitalis Pentax Medium Format 61 04-08-2011 08:05 PM
voigtländer nokton 25mm f0.95 ... for Pentax? Becks21 Pentax DSLR Discussion 7 02-20-2011 12:48 AM
D FA 645 1:4/25mm Smolk Pentax Medium Format 0 01-28-2011 09:29 AM



All times are GMT -7. The time now is 12:39 AM. | 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