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Roy Laird
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, September 28, 2004 - 08:42 am: | 
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Adjusting a rangefinder to infinity is awkward if you have to keep going outside to aim at a telephone pole in the distance. An easier way is to make a virtual infinity target that can be used right at your bench. Measure the distance between the center of the viewfinder window and the center of the rangefinder window of your camera (or take this distance from camera's specs), and on a sheet of paper draw two parallel vertical lines exactly this distance apart. Now, hang the sheet of paper at a convenient distance, say, a meter or two, and set the camera's focus to infinity. If the rangefinder is properly adjusted, the two different lines will coincide with each other. If you think for a minute about how a rangefinder works, you'll see why this is so, and also why it doesn't matter how far the camera is from the sheet of paper. |
charlie
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, September 28, 2004 - 09:07 am: |
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I like it. Maybe one line red and one green or two t's, one upside down so you are certain you see both lines and not just one. |
rick oleson
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, September 28, 2004 - 01:59 pm: |
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You mean like this? :
http://rick_oleson.tripod.com/index-123.html
(scroll to the bottom)
 = |
Roy Laird
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, October 06, 2004 - 10:22 am: |
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Exactly, Rick. I figured I wouldn't be the first to have hit upon this trick. |
Jon Goodman
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, October 06, 2004 - 03:09 pm: |
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Yes, that is a neat method. I also like a full moon in a cloudless sky. You can adjust for infinity and for vertical image at the same time, and the target is easy to see.
Jon |
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