Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
07-21-2009, 11:42 AM   #1
Moderator
Site Supporter
photolady95's Avatar

Join Date: May 2009
Location: Cruising PentaxForums and watching your back.
Photos: Gallery | Albums
Posts: 8,893
Optics from zoom lens

Is there any use for these lens parts? I was thinking extension tube but have seen this only done with a teleconverter's optics. I have the main glass from the front of the lens (makes a good magnifying lens), I have two together in a tube looking object (I couldn't get them apart), and a smaller piece of glass (not sure if it magnifies or not). What can I do with them?

07-21-2009, 12:38 PM   #2
Veteran Member
MattGunn's Avatar

Join Date: Jun 2009
Location: Wales
Photos: Gallery
Posts: 347
Teleconverters can be made into extension tubes as they have both parts of the bayonet mount at oposite ends of a solid tube. Broken lenses are not so easy to make use of. The optics (or at least some of them) can be used as hand hels magnifyers, the bayonet can be used to mend / modify / convert another lens. There are a lot of potenitally usefull parts in a broken lens but only if you are into lens repair.
07-21-2009, 07:56 PM   #3
Moderator
Site Supporter
photolady95's Avatar

Join Date: May 2009
Location: Cruising PentaxForums and watching your back.
Photos: Gallery | Albums
Posts: 8,893
Original Poster
Well, that answered my questions. Thanks Matt.

The one bigger lens that was in front is good for magnifying so I'll keep it for that. The other piece that has a lens at both ends would probably make a good loupe if I had a lightboard.

I guess I'll just junk the rest of it. Not much use to me torn apart like it is.
07-22-2009, 11:00 AM   #4
Veteran Member
Lloydy's Avatar

Join Date: Aug 2007
Location: Shropshire, UK
Posts: 1,114
Take the glass out and assemble the body with a bit of card or plastic across the bottom and you have a handy pen and pencil holder for your desk.
( even better with a canonikon lens )

07-22-2009, 12:09 PM   #5
Veteran Member
MattGunn's Avatar

Join Date: Jun 2009
Location: Wales
Photos: Gallery
Posts: 347
If you stick a bit of card onto the bayonet mount, make a hole in the card, stick a bit of foil over the hole and push a pin through it and you have a pinhole lens - these can work quite well and they have NO chromatic aberration!
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!
glass, k-mount, lens, optics, pentax lens, slr lens, tube
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: Toyo Optics TOU/Five Star Macro Zoom 75-200mm f/4.5 (CONUS) Crazy Fedya Sold Items 15 08-21-2010 05:59 PM
Continental Optics Lens? SweetSherri Pentax SLR Lens Discussion 12 06-28-2010 06:34 PM
Toyo Optics Five Star f/4.5 75-200mm Telephoto Lens Petthefish Pentax SLR Lens Discussion 2 09-10-2007 08:53 AM



All times are GMT -7. The time now is 05:20 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