THE NEW ZEALAND STEREOSCOPIC SOCIETY
PRESIDENTS REPORT 2010.
The year has brought us many archived slides in the folios as members use their digital cameras preferentially. So it was a pleasure for yours truly to get out and about, north of Auckland in December and expose several rolls of film, all on hyper-stereos, at selected beauty spots. Some of these I plan to present at the AGM, all things being equal.
PCL in Karaka St. Auckland, are still selling transparency film although the choice is smaller than BD (Before Digital) and their processing is as good as ever but the one hour service has long gone. I had to wait two whole days for the last lot.
With the advent of 3-D television, it seems likely that people will be replacing their old TVs with 3-D versions in the near future and I do expect well heeled enthusiast to be getting out with linked digital movie cameras to produce their own home 3-D movies. Perhaps we should advertise the presence of the Stereoscopic Society more vigorously to attract these likely newcomers instead of having them form local clubs as often happens with new technological systems. Hands up all those who volunteer to start branches in Palmerston North, Wellington and Christchurch!
Meanwhile, Duncan’s ingenious memory stick folios continue to flourish. Your President still gets crossed computer fingers getting to grips with the ease of changing files on the memory sticks. Copying comment “cards” can get them moved rather than copied—it improves with practice—and time gets wasted sorting out the resulting confusion. Could this be why several members have not contributed to the digital folios? It is definitely optional but contributions are appreciated. Or is it the problems with sequential exposures until reasonably priced twin lens digital cameras come onto the market?
A few tips about sequentials seem appropriate here:—
1. The 1 in 30 rule applies here with a difference. Between exposures, move no more than one thirtieth of the near point distance. Do not converge with wide-angle lenses but convergence with normal and telephoto lenses is in order. It allows one to centre on the same detail in the window for both exposures and thus get full frame 3-D. Any slight keystoning gets straightened up by the Stereo Photo Maker (SPM) program.
2. Do slide the camera along an imaginary (or real) plank, between exposures, to ensure horizontal deviation on screen. Should you move at an angle to the camera base, slope error will have you rotating the images by a similar angle to keep deviation horizontal on screen. Your President has several old images with subjects lying on their sides because the camera was raised or lowered between exposures—instead of sliding it along that plank—thus had to be rotated 90° for good 3-D.
3. Lastly, take say four spaced exposures per image then choose later, which pair of the four gives the most exquisite stereo effect.
Many thanks to John Calcott for his dedicated secretarial work and managing the overseas folios, to Carl for organising folios A & B and to Judy for making her home available for the AGM meeting and Max’s digital show.
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