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Photography, Digiscoping & Art
The Birdforum Digiscoping Forum
Camera focussing problems
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<blockquote data-quote="bartolli" data-source="post: 1244934" data-attributes="member: 66963"><p>Again thanks for all your comments and time!</p><p></p><p>Ernie: The canada geese shot was one of my "first" efforts when I was handholding the camera against the eyepiece without any aids at all. The remaining vignetting is just the result of the crop. The shot of the greenfinches was again handheld against the eyepiece but using a cut-out film cannister lid to centre the camera within the eyepiece cup.</p><p></p><p>Stirred by my "success", I thought an adapter was a worthwhile investment & bought a visionary "L" swing-out adapter, all the other photos I have posted were taken with this adapter. In hindsight I may have been better getting the SRB-G adapter.</p><p></p><p>Your comment does raise the issue that I have noticed that when using this adapter, the ring is not centred on the LCD screen (but it is when I handhold). This is a bit strange because when using the adapter the ring is sharp and complete, but if I try to move the camera to get the ring centred then the ring goes hazy & not complete!</p><p></p><p>Generally when setting up the adapter, I set it up with no zoom and the lens against the eyepiece and adjust the position to get the ring sharp/complete. I then slight zoom the camera to get rid of vignetting, note that the slight zoom actually retracts the camera lens a bit, so the lens is a few millimetres away from the eyepiece when taking the shots.</p><p></p><p>I have tried my handholding method (with the cannister lid) so that when zooming the camera, the lens is still against the eyepiece, more or less same results.</p><p></p><p>The canon adapter you mention, is that the ringthing which replaces the screw ring around the lens? If so how do I use this to attach the camera to the scope?</p><p></p><p>Paul: As far as I am aware I cannot change the eyepiece. I'll start another thread to see if anyone else has experienced such probs with a bresser.</p><p></p><p>So far, there seem to be 3 possibilities, or poss a combination of these?:</p><p></p><p>1) Camera can't focus down thro scope when zoomed, solution use jmepler technique;</p><p>2) Quality of scope/eyepiece or using zoom eyepiece;</p><p>3) Adapter not adequate;</p></blockquote><p></p>
[QUOTE="bartolli, post: 1244934, member: 66963"] Again thanks for all your comments and time! Ernie: The canada geese shot was one of my "first" efforts when I was handholding the camera against the eyepiece without any aids at all. The remaining vignetting is just the result of the crop. The shot of the greenfinches was again handheld against the eyepiece but using a cut-out film cannister lid to centre the camera within the eyepiece cup. Stirred by my "success", I thought an adapter was a worthwhile investment & bought a visionary "L" swing-out adapter, all the other photos I have posted were taken with this adapter. In hindsight I may have been better getting the SRB-G adapter. Your comment does raise the issue that I have noticed that when using this adapter, the ring is not centred on the LCD screen (but it is when I handhold). This is a bit strange because when using the adapter the ring is sharp and complete, but if I try to move the camera to get the ring centred then the ring goes hazy & not complete! Generally when setting up the adapter, I set it up with no zoom and the lens against the eyepiece and adjust the position to get the ring sharp/complete. I then slight zoom the camera to get rid of vignetting, note that the slight zoom actually retracts the camera lens a bit, so the lens is a few millimetres away from the eyepiece when taking the shots. I have tried my handholding method (with the cannister lid) so that when zooming the camera, the lens is still against the eyepiece, more or less same results. The canon adapter you mention, is that the ringthing which replaces the screw ring around the lens? If so how do I use this to attach the camera to the scope? Paul: As far as I am aware I cannot change the eyepiece. I'll start another thread to see if anyone else has experienced such probs with a bresser. So far, there seem to be 3 possibilities, or poss a combination of these?: 1) Camera can't focus down thro scope when zoomed, solution use jmepler technique; 2) Quality of scope/eyepiece or using zoom eyepiece; 3) Adapter not adequate; [/QUOTE]
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Camera focussing problems
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