Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
05-23-2010, 11:48 AM   #16
Moderator
Site Supporter
Blue's Avatar

Join Date: Jun 2008
Location: Florida Hill Country
Photos: Gallery | Albums
Posts: 17,212
Based on the tightness of the subject in the frame, I'd say the first one is 300mm and the 2nd 600mm.

05-23-2010, 12:06 PM   #17
Senior Member
iFoto's Avatar

Join Date: Feb 2008
Photos: Gallery | Albums
Posts: 177
good eye, you're right
but i hope both photos are equivalent - well thats what i think

at this spot i met quite a lot of "wildlife-photographers"
90 % of them gave up and left the location after max 30-60 minutes
and most of them have seen the wolfs only very far far away

with some more patience they whould have got some great shots even with 300
05-24-2010, 07:05 AM   #18
Site Supporter
Clinton's Avatar

Join Date: Feb 2010
Location: Salt Lake City, UT
Photos: Gallery | Albums
Posts: 1,826
In another thread Adam commented on, I thought he made some great points about a fixed 600mm not being as useful as the 250-600mm. I would love to see a DA* (but full frame capable) 250-600mm/5.6.

Would it be expensive? I expect. If Pentax were to announce it, I'd start saving.
05-24-2010, 09:38 AM   #19
Senior Member
iFoto's Avatar

Join Date: Feb 2008
Photos: Gallery | Albums
Posts: 177
there are still some 250-600 around - but have a look at the pricetag
and a brand new it will not be cheaper

pro-lenses with a highend-pricetag just do not go on a amateur-body
if you can spending 8-10k on a lens
you want a propper high-end, fullframe, fast autofocus pro-body at the other end

05-24-2010, 09:48 AM   #20
Zav
Pentaxian
Zav's Avatar

Join Date: Feb 2009
Photos: Gallery
Posts: 1,339
QuoteOriginally posted by Blue Quote
The crop factor has nothing to do with the focal length. By your logic, DA* 300mm x 1.5 = 450 which means they already released it.
So you don't see what I mean
I mean that the lately released DA lenses have viewing angle close to classic 24x36 lenses. The 400mm would be the 600mm remplacement.
05-24-2010, 12:30 PM   #21
Moderator
Site Supporter
Blue's Avatar

Join Date: Jun 2008
Location: Florida Hill Country
Photos: Gallery | Albums
Posts: 17,212
QuoteOriginally posted by Zav Quote
So you don't see what I mean
I mean that the lately released DA lenses have viewing angle close to classic 24x36 lenses. The 400mm would be the 600mm remplacement.
That has nothing to do with it. The angle of view and field of view depend on the sensor/film size. A 400mm lens is a 400mm lens. If you want to drag 24x36 (aka 135 film) into the equation a la full frame, it can't even be spun as a 600mm replacement based on a 1.53x factor. There currently is no replacement for the FA* 600mm f4 lens. Hoya keeps things quite so its hard to say what they have planned. Furthermore, there has never been a DA 400mm on the lens road map.

http://www.pentax.jp/english/imaging/digital/lens/roadmap.pdf

Last edited by Blue; 05-24-2010 at 01:06 PM.
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, pentax lens, pentax sdm, sdm, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
smc PENTAX DA Star 55mm F1.4 SDM SUPER SLOW Auto Focus with K-7 brosen Pentax SLR Lens Discussion 21 05-15-2013 08:48 AM
For Sale - Sold: Pentax SMC DA* Series 50-135mm f/2.8 ED IF SDM Telephoto Zoom Lens sharonblue Sold Items 0 11-16-2009 05:27 AM
Pentax 800mm f/4 super telephoto seen in Canada dave9t5 Pentax SLR Lens Discussion 6 06-20-2009 03:50 PM
Super telephoto Lens tommya Pentax SLR Lens Discussion 3 02-18-2008 04:48 AM



All times are GMT -7. The time now is 10:58 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