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Forum: Photographic Equipment for Sale 11-05-2017, 06:50 PM  
For Sale: Pentax DA* 16-50mm F2.8, Samyang 24mm F1.4, Vivitar 28mm F2.0, more, prices lowered
Posted By uttam.hathi
Replies: 12
Views: 1,234
am interested in the scorpion, what is it
Forum: Sold Items 11-01-2017, 06:49 PM  
For Sale - Sold: My Best F* 300 / 4.5 Lens with Dedicated Tripod Mount and Special Dedicated Case
Posted By uttam.hathi
Replies: 4
Views: 665
three that's hoarding :)
Forum: Repairs and Warranty Service 10-27-2017, 11:33 PM  
35mm 2.8 limited gear
Posted By uttam.hathi
Replies: 4
Views: 505
any idea if these parts of gear would be available in the market.
Forum: Repairs and Warranty Service 10-15-2017, 07:45 PM  
35mm 2.8 limited gear
Posted By uttam.hathi
Replies: 4
Views: 505
cant heat, the quick focus part has plastic. Thanks, does not seem spline as on the circled part one rotates free of another which it should not, does not seems wearing of the spline (if present) as there is no wobble.
looking forward to some more ideas.
seems pressed though
Forum: Repairs and Warranty Service 10-14-2017, 07:22 PM  
35mm 2.8 limited gear
Posted By uttam.hathi
Replies: 4
Views: 505
is there any data how to disassemble the gear in pentax DA 35/2.8 limited lens,
https://www.flickr.com/photos/34859797@N07/23849078438/in/dateposted-public/
Forum: Repairs and Warranty Service 07-15-2017, 06:14 PM  
Salt Water Pentax K-1
Posted By uttam.hathi
Replies: 13
Views: 777
find a disassembly manual, open the lens and clean it up, else take it a technician who can do it immediately, probably shorted, if not. if its in warranty (if the warranty is honored) put it under warranty. Insurance well.
presume damaged unless proven otherwise.
wonder what happened to water resistance, unless it duncked
Forum: Repairs and Warranty Service 07-11-2017, 07:11 PM  
SDM contacts easily switchable?
Posted By uttam.hathi
Replies: 3
Views: 516
i have till date not stacked them next to each other, I have a 16-50, running on screw drive, willing to be a paid donor:)
Forum: Sold Items 07-01-2017, 07:19 PM  
For Sale - Sold: Pentax F*300 4.5 w/tripod collar mount
Posted By uttam.hathi
Replies: 20
Views: 2,781
is it one of those manufacturing defect rejects which are sudden appearing from japan :lol:
Forum: Pentax SLR Lens Discussion 06-27-2017, 10:17 PM  
New Zeiss Milvus 50mm f/1.4 lens on my Pentax K1
Posted By uttam.hathi
Replies: 36
Views: 2,327
what happened to the contacts
Forum: Maintenance and Repair Articles 05-26-2017, 09:59 AM  
Pentax Lens Disassembly Database
Posted By uttam.hathi
Replies: 164
Views: 96,506
thought pictures spoke with thousand words
Forum: Maintenance and Repair Articles 05-25-2017, 09:11 AM  
Pentax Lens Disassembly Database
Posted By uttam.hathi
Replies: 164
Views: 96,506
this site/blog has a lot of disassembly data

PenPen
Forum: Sold Items 05-20-2017, 10:12 PM  
For Sale - Sold: Pentax FA 31mm Limited
Posted By uttam.hathi
Replies: 6
Views: 972
thanks
Forum: Sold Items 05-20-2017, 06:48 AM  
For Sale - Sold: Pentax FA 31mm Limited
Posted By uttam.hathi
Replies: 6
Views: 972
interested in vivitar 13mm 2.8 pristine condition and voigtlander ultron 50 1.8 m42 mount modified for use (autofocus depressed) in exchange for FA 31mm
Forum: Pentax SLR Lens Discussion 05-13-2017, 09:27 PM  
Converted Contax/Zeiss Won't Focus
Posted By uttam.hathi
Replies: 8
Views: 734
r u using a leitax or chinese equivalent of leitax
Forum: Sold Items 05-11-2017, 09:24 PM  
For Sale - Sold: DA*50-135mm f2.8
Posted By uttam.hathi
Replies: 28
Views: 4,154
dumb of me to ask, but would u be interested in Tokina AT-X pro 28-70/2.8, Pro 1 the angenieux version its realigned with no front or back focussing and.....(name ur need).. :)
but then i have 16-50/2.8 thus one has to go
Forum: Sold Items 05-02-2017, 09:07 AM  
For Sale - Sold: SMC Pentax DA*300 F4
Posted By uttam.hathi
Replies: 6
Views: 717
dont sell
Forum: Pentax SLR Lens Discussion 05-01-2017, 09:13 PM  
Pentax 16-50/2.8 dissassembly
Posted By uttam.hathi
Replies: 17
Views: 1,432
thanks Harris, looked like it.
Forum: Pentax SLR Lens Discussion 05-01-2017, 09:42 AM  
Pentax 16-50/2.8 dissassembly
Posted By uttam.hathi
Replies: 17
Views: 1,432
i need to work on removal of front element, is it a sticker or is it screwed in.
Forum: Photographic Equipment for Sale 04-20-2017, 09:37 PM  
For Sale: FF AF lenses: FA 28, 50/1.4, 1.7, F 50/1.7, FA 24-50, 28-70/4, 75-300
Posted By uttam.hathi
Replies: 62
Views: 11,176
how to use contax RF mount on pentax
Forum: Sold Items 04-19-2017, 04:15 AM  
For Sale - Sold: SMC Pentax F* 300/4.5
Posted By uttam.hathi
Replies: 5
Views: 920
which forum member brought the cracked lens, trying to fabricate a front lens, with a non ED glass of course, still unsuccesful cut 4 glass already, 5th glass is arriving
Lens projector telescope scientific FLAT & CONVEX 65mm dia. 17mm thick black .20 | eBay
Forum: Pentax DSLR Discussion 04-17-2017, 06:39 PM  
Simple dSLR
Posted By uttam.hathi
Replies: 45
Views: 2,298
fully agree removing all those bloats would make a grt dslr, als hope that pentax designs their camera better, ever opened a pentax dslr and canon dslr, pentax dslr is fill of wires which is prone to pinching, no touch screen pls
Forum: Pentax SLR Lens Discussion 04-14-2017, 03:41 AM  
SMC Pentax-DA 35mm f/2.8 Limited Macro TEARDOWN/DISASSEMBLY
Posted By uttam.hathi
Replies: 45
Views: 5,198
please reconsider the sequence of 7 then 8, i worked on a non auto focussing 35/2.8. i think its better that: optical unit in 8 is removed first, by removing the helical sleeve.
*Thus remove all six screws,
*remove the helical sleeve,
*remove the optical unit,
then remove the focussing ring (needs a slight tilt when removing).

For assembly
remove the 'automatic fork'
fit the toothed gear, fit n test the focussing ring such that it does not overshoot, if it overshoots it will bust the automatic fork (which happened to me), once the toothed gear is set such that it does not over shoot, fit the optical unit, (if required -which i did is that the aperture controller/actuator was removed then the optical unit easily slides) fit the helical sleeve.
this will save the automatic fork (i think its called info brush).

But then now my question
refering pic 21, the gear unit (quick shift gear unit) on the copper gear which connects the toothed gear.
those two gear the copper one above and the steel below, how freely are they suppose to move (one from the other), mine is completely free though the bottom steel gear moves the copper one when connected to toothed gear does not, but without the toothed gear both moves, the issue is friction, if friction its a dumb design though. any thoughts.
or is some micro part missing in mine.
Forum: Lens Clubs 02-20-2017, 07:02 PM  
Tokina AT-X PRO lens club.
Posted By uttam.hathi
Replies: 349
Views: 53,852
guess what i posted all three at-x pro for sale, well till i regret :)
Forum: Sold Items 02-20-2017, 06:45 PM  
For Sale - Sold: Tokina 20-35
Posted By uttam.hathi
Replies: 6
Views: 919
at-x pro 20-35/2.8?
Forum: Sold Items 02-05-2017, 06:08 AM  
For Sale - Sold: Pentax K-3 and extras
Posted By uttam.hathi
Replies: 3
Views: 796
sell it seperately u might get better price and be convenient to buyers
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