DPChallenge: A Digital Photography Contest You are not logged in. (log in or register
 

DPChallenge Forums >> Tips, Tricks, and Q&A >> Magnification
Pages:  
Showing posts 1 - 2 of 2, (reverse)
AuthorThread
10/07/2003 02:42:49 PM · #1
I've tried magnification filters, I have a full set 4x,2x and 1x, plus I went out and bought a 3.5" magnifying glass, but the camera seems to "look through" the lens and not really magnify the subject (to the extent I believe it should). I've contacted Sony, but no reponse.
Any ideas/suggestions? (I've tried both auto and manual focus, macro mode and not) It refuses to focus on the magnifying glass, period.
10/07/2003 03:16:11 PM · #2
I'll relay my experience - can't vouch for the technical accuracy. :)

They only magnify a small amount, though they do magnify some. You can tell this simply by looking through them with your eye. Here's a test I did once before when this question came up:

No filters
+3 Diopter
+7 Diopter

These were all taken on a tripod, no changes in focal length.

However, for me (and my camera), the biggest benefits I get from them is 1) I can focus on objects much closer to the camera (2 inches with +7 vs. 6-7 inches with none), and 2) the ability to get a narrower DOF, and therefore get a bettr blurred background on macro shots.

From what I understand, with the 717 you already have the ability to focus up close, and with aperature control probably have more control over DOF than I do. So you may not have as much, if any, need for them. I know Buzzrock was mentioning on another forum that he was having the same problem as you with them on his 717 - he wasn't seeing much benefit. I don't know if he ever found a use for them, or a way to get something out of them.

Message edited by author 2003-10-07 15:16:28.
Pages:  
Current Server Time: 04/22/2019 07:58:55 PM

Please log in or register to post to the forums.


Home - Challenges - Community - League - Photos - Cameras - Lenses - Learn - Prints! - Help - Terms of Use - Privacy - Top ^
DPChallenge, and website content and design, Copyright © 2001-2019 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Proudly hosted by Sargasso Networks. Current Server Time: 04/22/2019 07:58:55 PM EDT.