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Forum: Troubleshooting and Beginner Help 5 Days Ago  
Poll: Help identifying wrong lens mount
Posted By pentaxus
Replies: 12
Views: 550
The aperture ring says NI. Yup, Nikon.
Forum: Pentax SLR Lens Discussion 03-08-2024, 10:02 PM  
SMC Pentax-M 100mm F4 Macro vs HD Pentax-D FA 100mm F2.8 ED AW Macro 4 film scanning
Posted By pentaxus
Replies: 19
Views: 805
I have experience with the 100mm bellows lens for slide copying. Optically identical to the macro lens. It is outstanding. Don't add glass.
Forum: Film SLRs and Compact Film Cameras 03-02-2024, 01:33 AM  
M42 pentaprisms
Posted By pentaxus
Replies: 2
Views: 350
I think that the SPF and KM are the same. The SV is different.
Forum: Pentax DSLR Discussion 03-02-2024, 01:10 AM  
Weather seal verification
Posted By pentaxus
Replies: 28
Views: 1,047
Official tests are done with specific nozzles with water at specific pressure. It might be useful to know what the standard is. Pentax 90WR film cameras were "top rack dishwasher safe" not including the dry cycle. That claim had to do with the test standard of water jets from all sides compared to normal dishwasher pressure. Without knowing what the standard it is all guessing. BTW, don't try that with a current product. I think the current standard for water resistant products is a standard Japanese watering can held 3 feet above the camera for a specific amount of time.
Forum: Film SLRs and Compact Film Cameras 03-02-2024, 12:41 AM  
Minolta SRT-202 White Stuff on Shutter Cloth Question???
Posted By pentaxus
Replies: 10
Views: 398
Rub lightly with a mild detergent on a swab.
Forum: General Photography 02-04-2024, 07:08 PM  
Flash photography used to be pretty wild.
Posted By pentaxus
Replies: 15
Views: 1,036
Before X cubes, people left their pair of 815 batteries in the camera until they corroded up solid, which generated upset customers at Christmastime. You can't sell film if the camera doesn't work. X cubes allowed happy people to not worry.
Forum: Pentax DSLR Discussion 02-04-2024, 06:41 PM  
Batteries
Posted By pentaxus
Replies: 11
Views: 777
It recognized lithium as separate because they have a higher voltage (1.6v) than the Ni-MH batteries (1.2v) and even Alkaline AA (1.5v).
Forum: Troubleshooting and Beginner Help 01-29-2024, 08:15 PM  
Rewind Shaft Spindle Help
Posted By pentaxus
Replies: 3
Views: 329
An ME super rewind shaft is too short
Forum: Film SLRs and Compact Film Cameras 01-28-2024, 10:36 PM  
Pentax LX cleaning
Posted By pentaxus
Replies: 4
Views: 509
It is on the bottom of the lens.
Forum: Troubleshooting and Beginner Help 01-25-2024, 11:33 PM  
ME F Needs Repair
Posted By pentaxus
Replies: 3
Views: 366
To clean the focusing screen you need to remove the top cover. You will need to remove the prism to get to the focusing screen. That may require removing the circuit board before loosening the set screws and removing the springs and metal piece that hold it into place.
Forum: General Photography 01-25-2024, 11:25 PM  
The hipsters have won…
Posted By pentaxus
Replies: 45
Views: 1,958
You would get something that looks like that at a thrift store until you could get a cheap electronic flash. I used a flashbulb flash in Argentina in the mid 70's.
Forum: Troubleshooting and Beginner Help 01-25-2024, 11:21 PM  
Is this fungus in a lens?
Posted By pentaxus
Replies: 8
Views: 498
It looks a lot like mineral residue from water in the lens. Really difficult to clean.
Forum: Pentax SLR Lens Discussion 01-09-2024, 09:43 PM  
Should built-in lens hood on Pentax-M 200m f4 slide out on its own?
Posted By pentaxus
Replies: 8
Views: 558
The hood has a strip of felt around the inside of the hood too keep it from moving freely. Maybe it is worn. Maybe it is gone.
Forum: Troubleshooting and Beginner Help 01-09-2024, 09:30 PM  
Brand new lens - fungus or other gunk?
Posted By pentaxus
Replies: 9
Views: 671
Could be oil.
Forum: Troubleshooting and Beginner Help 01-07-2024, 02:37 PM  
Rewind lever loose on pentax p30t
Posted By pentaxus
Replies: 2
Views: 251
Rewind the film and then finish winding the lever.
Forum: Repairs and Warranty Service 01-04-2024, 10:46 PM  
Pentax 6x7 67 67II Spring Measurements
Posted By pentaxus
Replies: 1
Views: 331
The technical drawings were never available. The schematic drawings are approximations.
Forum: Pentax Medium Format 01-04-2024, 10:42 PM  
Pentax 645 film advance noise.
Posted By pentaxus
Replies: 6
Views: 544
Probably not quiet enough. The new ones are only slightly quieter.
Forum: Film SLRs and Compact Film Cameras 12-29-2023, 12:43 AM  
Spotmatic SP Random Mirror Stick at Slow Shutter Speed
Posted By pentaxus
Replies: 7
Views: 604
In the picture you can see the shutter curtain edge. The mirror is up because the shutter curtain hasn't gone all the way across the frame. The slow speed governor may need lubrication.
Forum: Pentax SLR Lens Discussion 12-27-2023, 02:19 PM  
Swapping 50-135mm SDM power contact to 150-450mm
Posted By pentaxus
Replies: 12
Views: 1,220
There are a few parts Ricoh should sell.
Forum: Troubleshooting and Beginner Help 12-19-2023, 08:29 PM  
When shooting on slower speeds the Mirror on my spotmatic stays up
Posted By pentaxus
Replies: 3
Views: 418
The slow speed governor probably needs lubrication. Many times, however, you can try exercising it by repeatedly firing the shutter at progressively slower speeds. The slow speed governor is for speeds of 1/30 and slower.
Forum: Film SLRs and Compact Film Cameras 12-16-2023, 01:50 PM  
Pentax LX Shutter Ping Noise
Posted By pentaxus
Replies: 32
Views: 1,427
As long as the ping happens after the shutter closes it is no problem.
Forum: Pentax DSLR Discussion 12-16-2023, 01:49 PM  
Infinity focus issues for astro (not enough travel?)
Posted By pentaxus
Replies: 20
Views: 831
A few decades ago I encountered Rokinon UV filters that shifted focus making infinity focus impossible. Are you using a filter?
Forum: General Photography 12-08-2023, 08:04 PM  
Meet fellow Pentaxian Willy Kano
Posted By pentaxus
Replies: 5
Views: 491
He has a good "eye".
Forum: Pentax K-1 & K-1 II 12-08-2023, 08:01 PM  
Using the crop mode vs cropping in post
Posted By pentaxus
Replies: 27
Views: 1,655
My Tamron 10-24 is full frame at 15mm. You may find you will get more.
Forum: Pentax Forums Giveaways 12-08-2023, 07:45 PM  
November 2023 Pentax Limited Lens & Software Giveaway: Enter here!
Posted By pentaxus
Replies: 1,988
Views: 31,004
I think I am okay for another try at the 31mm.
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