First Stereos with Laowa 15mm: Tree Paeony
e6filmuser
Registered Users Posts: 3,379 Major grins
Yesterday morning was perfect for this exercise. There was bright overcast light, with enough diffusion to be shadowless for this subject.
A session on the previous day gave me problems with the camera and/or my head casting shadows over the flower. While it might have been OK for a singles frame, the sideways movement for the other view was not.
Yes, the background is far from picturesque but the likes of this hand-sized flower were not to be readily found elsewhere. In any case, it shows the scope of the lens. I believe that it is to be objects of this size which are likely to give the huge DOF characteristic of this lens.
I do not want to suggest that the lens is a go-to one for macro. For most subjects, a telephoto which separates the lens from the background is the best choice. But we must "think outside the box" at times.
Ideally, I would have used a tripod but I would not usually for stereo pairs, so they were hand-held (kneeling with firm grip on camera and elbows on knee).
I am showing the second session first. The stereograms are cross-eye so I also provide some single images for those who cannot make the former work. (They had had some micro contrast processing which the stereo pairs have not).
Sony Alpha A7R (Full frame, Aperture priority), ISO 800, f22, 1/160, 1/200. etc..
Harold
A session on the previous day gave me problems with the camera and/or my head casting shadows over the flower. While it might have been OK for a singles frame, the sideways movement for the other view was not.
Yes, the background is far from picturesque but the likes of this hand-sized flower were not to be readily found elsewhere. In any case, it shows the scope of the lens. I believe that it is to be objects of this size which are likely to give the huge DOF characteristic of this lens.
I do not want to suggest that the lens is a go-to one for macro. For most subjects, a telephoto which separates the lens from the background is the best choice. But we must "think outside the box" at times.
Ideally, I would have used a tripod but I would not usually for stereo pairs, so they were hand-held (kneeling with firm grip on camera and elbows on knee).
I am showing the second session first. The stereograms are cross-eye so I also provide some single images for those who cannot make the former work. (They had had some micro contrast processing which the stereo pairs have not).
Sony Alpha A7R (Full frame, Aperture priority), ISO 800, f22, 1/160, 1/200. etc..
Harold
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Comments
Brian v.
http://www.flickr.com/photos/lordv/
http://www.lordv.smugmug.com/
Thanks, Brian.
It is a slow learning process. Even at this moderate magnification, the front of the lens is almost touching the flower. It doesn't help that I have scarcely used an ultra wide-angle lens for years, because of the effective doubling of focal length on m4/3. A telephoto make it quite clear where the DOF and principal focus lies. The ultra-wides may do that but detail is so tiny.
At any higher magnifications fill flash will probably mostly be essential, and balanced against the daylight, something I have scarcely touched upon. It keeps life interesting!
Harold
Here are the first and second images more like I intended, if a little over-sharpened.
Harold
Harold