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2021
136 posts from 2021.
Hasselblad Beattie Brightscreen: Measuring the Brightness Gain
Since I made a post about a Hasselblad and a Beattie Brightscreen, I have been asked about how much brighter it can make the focus screen. Well, outdoors…
Hasselblad 50mm Distagon: Not Focusing to Infinity
This 50mm Hasselblad Distagon (circa 1962) came in a bit battered and rough and would not focus to infinity. It's not a good sign when you see a lens with…
Hasselblad 500C: Installing a Beattie Brightscreen
Installing a Beattie Brightscreen in an early (1963) Hasselblad 500C. From 1957-1969, the Hasselblad focus screen assembly consisted of eight separate…
Mamiya RB67: Replacing Light Seals
Replacing light Seals on Mamiya RB67. There are quite a few light seals on the Mamiya RB67- the film back alone has ten seals with five different lengths…
Mamiya 645 1000S: Calibrating Shutter Speeds on a Modified FL-400
Calibrating shutter speeds on the Mamiya 645 1000s. Since the first generation of Mamiya 645 models do not have removable backs, I use a dedicated shutter…
Canon AE-1 Program: Seized Mirror Retarding Gears
This Canon AE-1 Program was locked up, no mirror release. After mirror box removal, I found that the mirror retarding gears and flywheel were seized (you…
RZ67 110mm f/2.8 Lens: Restaking a Broken Cocking Ring Pin
This Mamiya RZ67 110mm f/2.8 lens came into the shop locked up tight. Upon disassembly, I found that the locking pin for the rear cocking ring had broken…
Canon AE-1 Program: Bent Rewind Shaft and Cracked Bushing
This AE-1 Program came into the shop for a routine check/cleaning and I noticed that the rewind shaft was slightly bent. More than just a cosmetic issue as…
Mamiya C 80mm f/3.7 Lens: Replacing a Missing Sync Contact Assembly
This Mamiya 80mm f/3.7 lens came into the shop for routine shutter cleaning and I was advised that the customer had attempted a repair. What I was not told…
RZ67: Testing the Internal Switches
The Mamiya RZ67 models are complex electro mechanical cameras that really benefit from having the proper test equipment for troubleshooting. There are nine…
Mamiya Production Date Codes
Mamiya used a couple of different date code schemes on their products. Most date codes are found on a small gold sticker affixed to the body or lens and…
Mamiya 645 Super: Setting Mirror Angle After Stop Replacement
A broken mirror stop is a common repair on the Mamiya 645 Super, Pro and Pro TL. After replacing the stop, the mirror needs to be set to a 45 degree angle…
Mamiya 645 Pro: Finding a Tiny Light Leak with a Pico-Ammeter
This Mamiya 645 PRO came into the shop with a difficult to locate light leak. I first checked body for impact damage suspecting that the back was not…
Mamiya 7: Winding Mechanism Repair, Broken Spring
Mamiya 7 winding mechanism repair. Third photo shows details of broken spring that needed replacing.
Mamiya 80mm C Lens: Adjusting Focus with Autocollimator and Shims
After replacing a set of elements on an 80mm Mamiya C lens, an autocollimator and a special fixture is used to check and adjust focus using shims from…
Mamiya 55mm C Lens on the Bench
Servicing a Mamiya 55mm C lens.
Mamiya 645 Pro TL: Checking Curtain Travel Times
Checking curtain travel times on a Mamiya 645 Pro TL with a Kyoritsu EF-511NK tester.
Mamiya Service Manuals for Every Product Since 1960
Service manuals for every Mamiya photographic product made since 1960.
RB67 Seiko Shutter: Disassembly for Oil Contamination Cleaning
Mamiya RB67 Seiko shutter disassembled for oil contamination cleaning.
RB67 Shutter: Flash Sync Repair with a Kyoritsu IE-2A Tester
Using a Kyoritsu IE-2A tester on a Mamiya RB67 shutter flash sync repair.
RB67 Shutters Removed for Parts
Removed RB67 shutters now used for parts.
RZ67 Pro II: Repairing the Release Mechanism
Repairing release mechanism on Mamiya RZ67 Pro II.
Hasselblad Repair Parts
Hasselblad repair parts.
RB67 Pro SD: Replacing a Worn Winding Gear
Replacing worn winding gear Mamiya RB67 Pro SD.