Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
05-08-2009, 06:16 PM   #16
Veteran Member
creampuff's Avatar

Join Date: May 2007
Location: Singapore
Photos: Gallery
Posts: 3,955
Aside from extension tubes, you can also:
- use a bellows
- reverse a lens (using a wider focal length lens will give higher magnification)
- stack another lens (requires DIY modifications)
- use a supplementary lens in front of the lens (poor edge sharpness, limited magnification)
- buy a Canon camera and the Canon's MP-E 65mm Macro lens (gives 1x to 5x magnification)

05-08-2009, 06:31 PM   #17
jem
Senior Member




Join Date: Feb 2009
Posts: 217
Peter Zack has written a very nice set of articles on Macro Photograpy that he published on his blog starting here: Shooting Macros.
There are 3 parts in total. They might help answer some of your questions about equipment and technique.
05-08-2009, 06:36 PM   #18
Veteran Member
yeatzee's Avatar

Join Date: Feb 2009
Location: Temecula
Photos: Gallery | Albums
Posts: 3,675
Original Poster
believe me, I've been envying that MP-E65 in canon's camp....and their MT-24EX! Wish pentax would make something similar because I like them much more than canon.
05-08-2009, 06:46 PM   #19
Veteran Member
yeatzee's Avatar

Join Date: Feb 2009
Location: Temecula
Photos: Gallery | Albums
Posts: 3,675
Original Poster
I still need to know, will the bellows on ebay which say K-PK mount work with my sigma lens?

Edit: Lens Macro Fold Bellows for Pentax K-PK (D)SLR Camera - eBay (item 160332903646 end time May-11-09 03:09:18 PDT)

does it mean K mount through PK mount? Im confused

05-08-2009, 07:08 PM   #20
jem
Senior Member




Join Date: Feb 2009
Posts: 217
QuoteOriginally posted by yeatzee Quote
I still need to know, will the bellows on ebay which say K-PK mount work with my sigma lens?

Edit: Lens Macro Fold Bellows for Pentax K-PK (D)SLR Camera - eBay (item 160332903646 end time May-11-09 03:09:18 PDT)

does it mean K mount through PK mount? Im confused
Yes that bellows should work with your Sigma. You will probably have to treat it as a manual lens, use your aperture ring and use the green button to set exposure though.

I believe K & PK mean the same thing in this instance.
05-08-2009, 07:57 PM   #21
Veteran Member
yeatzee's Avatar

Join Date: Feb 2009
Location: Temecula
Photos: Gallery | Albums
Posts: 3,675
Original Poster
Thanks, according to my calculations a decent 28mm lens + the bellows will give me a wopping 5:1! Now off to bid on a M 28mm F2.8
05-08-2009, 09:01 PM   #22
Pentaxian




Join Date: Feb 2009
Location: Alameda, CA
Posts: 3,198
QuoteOriginally posted by yeatzee Quote
Thanks, according to my calculations a decent 28mm lens + the bellows will give me a wopping 5:1! Now off to bid on a M 28mm F2.8
Have you calculated as how far (or rather, how close) the subject has to be to get to 5:1?

I don't have the number in my head, but I'm not surprised if the subject has to be inside the bellow, between the body and the lens.
05-09-2009, 07:41 AM   #23
Inactive Account




Join Date: Dec 2008
Location: Ames, Iowa, USA
Photos: Albums
Posts: 2,965
QuoteOriginally posted by yeatzee Quote
Thanks, according to my calculations a decent 28mm lens + the bellows will give me a wopping 5:1! Now off to bid on a M 28mm F2.8
I recommend starting with your sigma 105: with a typical bellows you might get as much as 2.5:1.

You will discover that that 2.5:1 is a LOT of magnification and you will have difficulty in making things stable enough, lighting properly, focusing, etc.

With a shorter lens, the magnification will be higher but you'll have less distance in front of the lens to work with (working distance.)

For magnifications of 5:1 or more you might be better off adapting your camera to a microscope.

Iowa Dave

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!
extension, extension tubes, k-mount, lens, macro, magnification, pentax lens, question, slr lens, tubes
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Question on extension tubes ismaelg Pentax SLR Lens Discussion 3 11-25-2009 10:09 PM
Question on extension tubes ismaelg Pentax SLR Lens Discussion 1 08-14-2009 08:04 AM
Quick question about extension tubes. Buddha Jones Pentax SLR Lens Discussion 5 07-09-2009 02:00 PM
Question about Pentax Extension Tubes GatorPentax Pentax Camera and Field Accessories 19 12-11-2007 04:52 PM
Question about extension tubes switters Pentax DSLR Discussion 7 12-06-2007 01:21 PM



All times are GMT -7. The time now is 11:25 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