Pages: [1]   Go Down

Author Topic: super telephoto  (Read 5161 times)

Tim Gray

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 2002
    • http://www.timgrayphotography.com
super telephoto
« on: May 25, 2005, 08:55:11 AM »

In 2000 on my CoolPix 900 with a custom adaptor.  Required a fair amount of PS to get contrast back in the image - the JPG format didn't take kindly to that degree of processing  
Logged

SLane

  • Newbie
  • *
  • Offline Offline
  • Posts: 20
super telephoto
« Reply #1 on: May 25, 2005, 10:40:18 PM »

Yes, 15 years ago with a Minolta SLR and a C-90 (Celestron 90mm Schmidt-Cassegrain).  You need a T-mount and T-adapter for your brand of camera.  The scope becomes a 1000mm f/10 manual focus lens.  If you put it on a modern AF camera, you may want to put a different screen in, as the fixed f/10 is a bit dark.

Stuart
Logged

SLane

  • Newbie
  • *
  • Offline Offline
  • Posts: 20
super telephoto
« Reply #2 on: May 26, 2005, 08:15:36 AM »

I have never tried it with a smaller scope, and am not sure about adapters for refractors, but focusing with the C-90 was difficult, but in good light, was very sharp.  The bokoh on mirror catropic lenses is a bit strange, because of the center mirror.  My tripod head back then was not very good, and no IS, so mirror lock up is essential.  Vibration at 1000mm is quite pronounced, and any technique for stopping vibration would be advised.  I used to use the lean into the lens/tripod trick, but adding a hanging wieght the tripod would seem like a good idea.  BTW, the T-mount/adapter was not expensive, and the C-90 is apears to be no longer made, but the C5 would be an excellent choice, but not cheap.  However, any of these scopes are a LOT cheaper than a Canon 600mm (or the 1200mm).  

Stuart
Logged

bosseyedoldbat

  • Newbie
  • *
  • Offline Offline
  • Posts: 3
super telephoto
« Reply #3 on: June 08, 2005, 07:18:35 PM »

I've used a Nikon 995 with a William Optics adapter coupled to a Pentax spotting scope..... for some great examples of what can be done with this type of equipment, I suggest you might like to try www.birdsofmanitoba.com
Logged

Bobby

  • Newbie
  • *
  • Offline Offline
  • Posts: 16
super telephoto
« Reply #4 on: May 25, 2005, 06:57:23 AM »

Has anyone used a spotting scope as a super telephoto?
Logged

BJL

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 5681
super telephoto
« Reply #5 on: May 25, 2005, 10:24:47 AM »

Quote
Has anyone used a spotting scope as a super telephoto?
Not me, but it is done so often that there is now a name for it, and websites discussing it. The name is "digiscoping", so you could either Google that, or start at this site:
http://www.shortcourses.com/how/digiscoping/digiscoping.htm

Happy hunting!
Logged

BernardLanguillier

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 9851
    • http://www.flickr.com/photos/bernardlanguillier/sets/
super telephoto
« Reply #6 on: May 26, 2005, 04:29:29 AM »

Nikon does offer 2 adapters, one for coolpix, the other one for their DSLR, that makes it possible to connect to at least the Nikon scopes.

I saw such a setup a few weeks ago, and it seems to work just fine.

Regards,
Bernard
Logged
A few images online here!

BernardLanguillier

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 9851
    • http://www.flickr.com/photos/bernardlanguillier/sets/
super telephoto
« Reply #7 on: June 06, 2005, 06:40:52 AM »

Don't know if an adapter is available for Minolta DSLR, but their built-in anti-vibration system might make of them the best option for these games.

Regards,
Bernard
Logged
A few images online here!
Pages: [1]   Go Up