Hi Emmanuel:
A beautiful and excellent panorama as I wrote in my
Flickr's comment on your image. I never forget your explanantions and
Richard K's explanations about to find the lens entrance pupil for the
camera- lens combo to establish the right rotation axis to take the pano
shots and that interesting and intensive thread about the stitched panos we
had in this group several years ago. I also recall the test made by Siu
according your suggestions to establish the lens entrance pupil for the
Planar 2,8/80-SL66 combo and I still have my test about the different
Rollei Pano Head versions that checked that the RPH earlier versions
directly puts the camera-lens on the entrance pupil and then on the right
rotaton axis; in the other hand the RPH last version needs to be used in
conjunction with the Rolleifix for a right rotation axis, otherwise, if
used between the tripod and the camera directly, the rotation axis is wrong
and you could use it for very distant subjects only (always talking about
the frames perspective matching).
The right rotation axis was very significant for this my last pano, because
the subject was closer than inifinity to the camera and it was a complex
subject with a lot of trees, branches and leaves. I kept the lens focused
at infinity and used f22 for a wide DOF, I had no perspective issues to
match the frames, the combo Rolleifix-RPH( last version) and 2,8F Planar
2,8/80 worked fine again for the rotation axis. The true problems were to
match the frames colors, contrast and brightness. Thanks for the comment.
Carlos
2017-01-22 10:36 GMT-03:00 Emmanuel BIGLER <bigler@xxxxxxxx>:
Hi Carlos from good ol' Europe
Congratulations for this nice panoramic shot. I like very much the mood
of this "green eveywhere" scene.
Believe me or not, but here in certain places of Franche Comté, namely
deep humid forested valleys of small rivers where the sun hardly ever
reaches the ground, we do have scenes very similar to yours!
Hence your example pushes me to capture in a similar manner the mood of
our hidden parts of Franche Comté ;-)
However, sometimes, hand-held panoramic shots with no special equipment
work well,
1/ when the subjet is very far away (no need to know where the entrance
pupil of the lens is located ;-)
2/ and when the brightness range of the subject in the whole panorama is
not extreme.
Here is an example, already known to our lists members. taken with a
camera similar to Carlos' camera, a Rolleiflex 3,5F Planar.
https://www.flickr.com/photos/43175600@N00/15986052470/
Technical details :
Hand-held, no tripod, no panoramic device, same exposure time / aperture
for all frames, frame stitching and geometry re-calculation with Hugin and
Panorama tools under Linux.
I have chosen a cylindrical projection, an orthoscopic projection would
have distorted the buidings in the edges beyond what would be reasonable.
All the best ! The Rollei TLR rules, even for panoramic shots, in the
digital age ;-)
--
Emmanuel
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