RPPs or Ultra Primes - Stereoscopy

[Jon MIchael Puntervold]

Hi,

how are the quality of the 18mm, 25 mm and 35 mm RPPs compared to shooting with Ultra Primes for stereo-work?

The ultras are obviously lighter, but would RPPs work satisfactory in 3D if weight is not a primary issue?

Best regards,
Jon M.

[Keith Putnam]

RPPs generally have fairly consistent geometric characteristics within a given focal length, so they tend to pair well without too much hunting for the best match and they align quickly. I prefer Ultras both geometrically and mechanically, but if RPPs are more in your budget (and will fit on your rig) you won't be disappointed.
YMMV, of course.

[Jon MIchael Puntervold]

Thank you, due to the limited amount of RPPs in Norway, I would probably not get to hunt a lot for matching lenses. Is it risky to just pair a random set?

Best regards,
Jon M.

[Tom C. Hall]

Consider that it takes about 30 ultra prime lenses to find a good matched pair, and even then they aren't perfect. I wouldn't bother with red primes.

[KETCH ROSSi]

Both are great lenses, as far as matching a perfect Pair, not easy with any lens other then Master Primes and Leica Summilux Cine Primes, which are truly built with at times less then 1% disparity, which is more then acceptable of course, in fact we tucked several lenses and use them with only a quick calibration and on to the 3D rig without any Post issues, for both the MP's and the Leica SCP.


We only tested 3 pairs of RPP's yet we found a perfect matched 50mm and 85mm with this set, we didn't used any other focal.

When we tested Ultra Primes we had 6 sets, we found 4 matching lenses that needed a slight adjustment, and we were ready to shoot, we never tested not looked for a full set, but single Focal, to find a full matched set however will be more difficult, and it will be done by picking lenses form various sets.