Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-12-2008, 04:10 PM   #31
Senior Member
proudtoshootpentax's Avatar

Join Date: Jan 2008
Location: Idaho Falls
Posts: 112
don't forget...

As long as we're counting lenses that use refraction instead of reflection, we can call a few our own. Yea, the minimum focusing distance might be a bit long...





There's this one too that can be used as a long telephoto



02-12-2008, 06:19 PM   #32
Pentaxian
falconeye's Avatar

Join Date: Jan 2008
Location: Munich, Alps, Germany
Photos: Gallery
Posts: 6,862
QuoteOriginally posted by Duck Dodgers Quote
Therefore it's likely similar to either a Schmidt-Cassegrain or a Maksutov-Cassegrain.
Exactly. But it didn't say which one exactly. Both of us know that the question about the best special kind of Cassegrain may start flame wars in some other forums It says 20" wide so it probably is built like a Celestron C8. Maksutov would be quite expensive at this size already.


QuoteOriginally posted by Duck Dodgers Quote
Some of us have; I have a 2400mm classical Cassegrain.
Did you do terrestrial photography with it? I posted one photo done at 2000mm f/10 higher up in the thread. Did you have more luck than me in getting sharp images?
02-12-2008, 06:21 PM   #33
Pentaxian
falconeye's Avatar

Join Date: Jan 2008
Location: Munich, Alps, Germany
Photos: Gallery
Posts: 6,862
Post your own "Mother of all Tekephotos" images

Like I say above... Anybody else here shooting terrestrial with a telescope? Post your images...
02-12-2008, 06:27 PM   #34
Pentaxian
falconeye's Avatar

Join Date: Jan 2008
Location: Munich, Alps, Germany
Photos: Gallery
Posts: 6,862
Funny

I have a funny contender

1000-4000mm zoom telelens for Pentax mount!


02-19-2008, 05:08 AM   #35
Site Supporter
amateur6's Avatar

Join Date: Mar 2007
Location: Rhode Island
Photos: Gallery
Posts: 176
QuoteOriginally posted by falconeye Quote
Did you do terrestrial photography with it? I posted one photo done at 2000mm f/10 higher up in the thread. Did you have more luck than me in getting sharp images?
Maybe I wasn't looking at it closely enough, but I'd call that shot "sharp enough"!
02-20-2008, 02:28 AM   #36
Senior Member




Join Date: Nov 2006
Location: Noosa, Queesnland
Photos: Albums
Posts: 199
Did someone mention Mother?

I present the Great Great Grand Mother

02-20-2008, 03:51 AM   #37
Veteran Member




Join Date: Jan 2008
Location: Seattle, Washington, USA
Photos: Gallery
Posts: 813
Let us give a moment's respect to our great grandmothers, even if they're a little slow by today's standards...what a grand ol' gal!
02-20-2008, 06:01 AM   #38
Pentaxian
falconeye's Avatar

Join Date: Jan 2008
Location: Munich, Alps, Germany
Photos: Gallery
Posts: 6,862
QuoteOriginally posted by Katsura Quote
I present the Great Great Grand Mother
Great!
And it is octopod mounted

02-20-2008, 02:13 PM   #39
Site Supporter
amateur6's Avatar

Join Date: Mar 2007
Location: Rhode Island
Photos: Gallery
Posts: 176
This doesn't really come close to any of these, but you gotta admit it's GORGEOUS (20-blade aperture! Imagine the bokeh...):

EARLY GOERZ 750mm DOPPEL ANASTIGMAT SER III BRASS LENS - eBay (item 280200787650 end time Feb-20-08 16:48:14 PST)

And again, quite a bargain by comparison. Until you add in the fabrication of a k-mount adapter...

Last edited by amateur6; 02-20-2008 at 02:14 PM. Reason: tweak
02-23-2008, 08:45 PM   #40
Senior Member




Join Date: Dec 2007
Location: USA
Posts: 126
QuoteOriginally posted by Peter Zack Quote
This lens is financed with oil money. Which means we all paid for it when we fill up our gas tanks.
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!
mother, pentax news, pentax rumors, telephotos
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Inexpensive telephotos nick c Pentax SLR Lens Discussion 20 11-13-2009 07:49 PM
Two questions, one thread: Telephotos and focus screens, oh my! Dubious Drewski Pentax DSLR Discussion 6 09-10-2009 01:11 PM
Using long telephotos & Shake reduction mr.voigtlander Pentax DSLR Discussion 28 06-04-2009 11:56 PM
Best long (affordable) telephotos? Finn Pentax SLR Lens Discussion 16 10-12-2007 01:44 PM
New DA* Telephotos kent vinyard Pentax News and Rumors 9 08-30-2007 01:48 AM



All times are GMT -7. The time now is 09:32 AM. | 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