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Forum: Pentax Medium Format
11-27-2022, 07:46 AM
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have now new results with P67 300mm new. tested at 100m target. scale has 100m. here are the two K+DF concept Nikon and EOS -adapters. Nikon clearly too thick,
will now collimate using 2cam-method.
EOS showing focus-line at 100mm whereas Nikon-adapter clearly towards infinity. means too thick. can indirectly measure by how much.
must know pitch of helicoid-tread. could be 0,5 or 0.75. most probably 0.75. one rotation= 0.75mm.
How is uploading images to gallery done?
---------- Post added 11-27-22 at 07:54 AM ----------
new 100m test P67-300 new. K+F concept Nikon(plus EOS-adapter) and EOS-adapter used.
Nikon clearly shows it will never get infinity since 100m is towards scale-infinity. if below 100m then it would go past infinity or beyond. its 3mm difference on scale.
IMPORTANT UPDATE: Just checked Nikon-adapter. one nikon-adapter-mount screw of 4 is not fully sitting in. testing now.
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Forum: Pentax SLR Lens Discussion
08-25-2019, 05:06 PM
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I own two PIGRIFF-B, one with BAL-U bellows for closer focusing, and one without (which uses longer adapter rings, different from those used by BAL-U, PIGRIFF-C and PIGRIFF-D systems).
Not longer adapter rings but special tube in place of BAL-U.
Glennview has a large novoflex-chapter and there is a least one large german overview. Had both B(have again) and had system C. 35mm macro 135mm Noflexar quickshot(unique has focus-limiter), 400(T-Noflexar 3 lens forget Achromat 2lens-version altogehter and 600 lenses.
---------- Post added 08-25-19 at 05:21 PM ----------
except for the follow-focus telephotos which are said to be quite mediocre,
Forget 400 Achromat-2 lenses. get 400 T-Noflexar -Three lenses.
---------- Post added 08-25-19 at 05:26 PM ----------
"hope that it is just a T mount "
Novoflex is A-mount(Not Sony A.....)
---------- Post added 08-25-19 at 05:31 PM ----------
" Focus was ~1cm of extension past infinity."
Infinity-adjusting-screw built-in pistol-grip
In Novoflex book-in german there is a discussion how to adjust: There is terrestrial infinity and extraterrestrial e.g. Moon.
---------- Post added 08-25-19 at 05:48 PM ----------
"including the 1.4x and 2x dedicated converters.
I also have the nice electric cable to connect the PIGRIFF 3"
Correction:
Tex 1.5x(not 1.4x) made for 200/3.8-Pigriff G(M42 Gewinde-Thread), Pigriff B, C, D not 3
Tex 2x made for 400/600 system.
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Forum: Pentax SLR Lens Discussion
10-22-2022, 10:00 AM
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There is a Pistar(not pistat) called pigriff-tripodcollar/adapter- but marcus idea is fanastic.
I am about to check infinity-sharpness and focus/scale- precision of P67-lenses 135/2.8 old and 200/4 new. see my other threads. since i couldnt get infinity sharpest possible i compared with Novoflex noflexar 200/3.8-there newest followfocus which has matchin tex 1.5 tele-converter(dont find right now). Surprisingly it goes beyond infinity. and proved really my other lenses have a problem or shooting with them on digital is it. see in other threads newest finding regarding IR sensibility of film and lens-correction for analoge. deeper discussions with experts needed. have that from an old pro with experience. Rafcamera has now two M68-adapters for Pentacon 6 and Kiev60. they are in testing. also macroversion. They go a bit beyond infinity like new Novoflex P67-adapter system. psl follow my other threads since i cannot repeat everywhere.
I have the old photosniper-like pre B-system where i added new adapters for enlarging/processing and follow-focus-heads-use. T-Noflexar 400/5.6 covering 6x6( and thats why i investigated it since i have B and C for FF/APS-C). where i had no adapters i used also parts of the novoflex-systems to match the lenses and also tape(T-noflexar 400/5.6. no images yet taken. except with blind apo-rodagon 480/9 not worth shooting hardly cleanable.
---------- Post added 10-22-22 at 10:04 AM ----------
Newest Adapter by Rafcamera for Novoflex Noflexar 400/5.6 M75 filtertread. newest heads have M77. M75-M77. not suitable for slim-filter!! slimfilter is nonsense here. old lens-cap is wearing out so add tape to its rim if nonfitting good enough. i also used heat inside.
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