Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-04-2008, 08:52 AM   #1
Veteran Member
gkopeliadis's Avatar

Join Date: Mar 2008
Location: ATHENS, GREECE
Posts: 311
What is that?

What is that?
Pro-Optic 420-800mm f/8.3-16 Vari Zoom with T-mount for Pentax-K



06-04-2008, 09:18 AM   #2
Veteran Member




Join Date: Mar 2008
Location: Nowhere, Sweden
Photos: Gallery
Posts: 654
That sir, is a camera lens. It is used along with a camera. You mount it on the front of the camera. A camera and lens working together, are used to make images either on film or electronically.

Hope that helps. You can read more here Photographic lens - Wikipedia, the free encyclopedia
06-04-2008, 09:25 AM   #3
Veteran Member




Join Date: Aug 2007
Location: Georgia
Posts: 376
A Lens for taking pictures directly at the sun? :P with that speed you are going to need all the light you can get
06-04-2008, 09:27 AM   #4
Senior Member
Talisker's Avatar

Join Date: Nov 2007
Location: Isle of Skye, Scotland
Photos: Gallery
Posts: 262
QuoteOriginally posted by Zewrak Quote
That sir, is a camera lens. [/url]
I thought it was a length of drainpipe with some glass in the end...

06-04-2008, 09:32 AM   #5
Pentaxian
jsherman999's Avatar

Join Date: Dec 2007
Photos: Gallery
Posts: 8,228
You see things like that in various forms being constantly sold on ebay - basically they are cheap 'telescopes' with a T or K mount option that you can attach to your camera. IQ is usually dismal. If you really need extreme reach and don't want to break the bank, a better choice might be a 500mm mirror lens.
06-04-2008, 09:38 AM   #6
Veteran Member




Join Date: Mar 2008
Location: Nowhere, Sweden
Photos: Gallery
Posts: 654
QuoteOriginally posted by jsherman999 Quote
You see things like that in various forms being constantly sold on ebay - basically they are cheap 'telescopes' with a T or K mount option that you can attach to your camera. IQ is usually dismal. If you really need extreme reach and don't want to break the bank, a better choice might be a 500mm mirror lens.
Why 500mm when you can have one of these?
Manual Focus Lenses :: View topic - Very rare 1000mm F6.7 MF mirror lens
06-04-2008, 09:39 AM   #7
Veteran Member




Join Date: Mar 2008
Location: Nowhere, Sweden
Photos: Gallery
Posts: 654
QuoteOriginally posted by Talisker Quote
I thought it was a length of drainpipe with some glass in the end...
Qualitywise, thats exactly what it is I'd guess.
06-05-2008, 01:27 AM   #8
Veteran Member
gkopeliadis's Avatar

Join Date: Mar 2008
Location: ATHENS, GREECE
Posts: 311
Original Poster
QuoteOriginally posted by Zewrak Quote
Qualitywise, thats exactly what it is I'd guess.
OK. I'll adapt my son's toy telescope instead, since he no longer uses it
It had cost me about 10 if I remember correct!

06-05-2008, 02:40 AM   #9
Veteran Member




Join Date: Mar 2008
Location: Nowhere, Sweden
Photos: Gallery
Posts: 654
QuoteOriginally posted by gkopeliadis Quote
OK. I'll adapt my son's toy telescope instead, since he no longer uses it
It had cost me about 10 if I remember correct!
Get a cheap and good 300mm and learn to get closer to the subject instead.
06-05-2008, 03:10 AM   #10
Veteran Member
gkopeliadis's Avatar

Join Date: Mar 2008
Location: ATHENS, GREECE
Posts: 311
Original Poster
QuoteOriginally posted by Zewrak Quote
Get a cheap and good 300mm and learn to get closer to the subject instead.
Cann't go much closer to the Moon (at least for now)
06-05-2008, 06:56 AM   #11
Veteran Member




Join Date: Mar 2008
Location: Nowhere, Sweden
Photos: Gallery
Posts: 654
QuoteOriginally posted by gkopeliadis Quote
Cann't go much closer to the Moon (at least for now)
Ah for such photography, I recommend you buy a proper telescope with a T-mount and attach the camera to that instead.
06-05-2008, 07:29 AM   #12
Veteran Member
gkopeliadis's Avatar

Join Date: Mar 2008
Location: ATHENS, GREECE
Posts: 311
Original Poster
QuoteOriginally posted by Zewrak Quote
Ah for such photography, I recommend you buy a proper telescope with a T-mount and attach the camera to that instead.
I have a Celestron NexStar 8SE (~2800mm) but is not as portable It has to stay put to the seaside house where is no photopolution.
On top of that, it turns things upside-down

EDITED: this thread started out as a Joke! It remains such!

Last edited by gkopeliadis; 06-05-2008 at 07:35 AM.
06-05-2008, 07:36 AM   #13
Veteran Member




Join Date: Mar 2008
Location: Nowhere, Sweden
Photos: Gallery
Posts: 654
QuoteOriginally posted by gkopeliadis Quote
I have a Celestron NexStar 8SE (~2800mm) but is not as portable It has to stay put to the seaside house where is no photopolution.
Buy a smaller telescope then. I am sure youll get better results with that.

QuoteQuote:
On top of that, it turns things upside-down
Yeah, thats a pain, having to turn the monitor upside down when editing. :/
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 lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search



All times are GMT -7. The time now is 11:40 PM. | 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