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2025
31 posts from 2025.
Mamiya 6/7: Why Not to Buy As-Is Broken Cameras
I’m doing some year end inventory on parts and this post is about broken Mamiya 6/7 cameras. Specificaly about purchasing cameras that are sold “as is…
Testing a 3D Printed O.Zone Mark 8 Body for Mamiya Press Lenses
We recently printed a copy of an O.Zone Mark 8 camera body designed by @o.zone69 This body was made to accept Mamiya Press lenses and has a Graflok back to…
Mamiya 645 80mm f/2.8: Sticking Diaphragm from Oily Blades
This Mamiya 80mm f/2.8 lens arrived with a sticking diaphragm. As seen in the photos, lots of oil present on the diaphragm blades. And, a lot of grease on…
Mamiya 7: Rangefinder Control Mechanism Explained
The first photo shows most of the major parts of the Mamiya 7 : the main body, wind mechanism, rangefinder, shutter speed assembly and front lens mount…
Mamiya 7 Lenses: Inspection After Impact Damage
These three Mamiya 7 lenses came into the shop today for checkout (along with a Mamiya 7 body) as my client mentioned that the body had some impact damage…
Mamiya 6: No Power from Corroded Battery Contact
This Mamiya 6 came into the shop with no display or release. Obvious power supply prolem and when I removed the battery cover and batteries, I could see…
Mamiya 7II: Two Bodies Unrepairable from Impact and Water Damage
Some of the cameras coming into the shop are not repaired due to major trauma that may not be economical or possible to repair. These are usually impact or…
LA Camera Expo in Burbank: October 12 Show Table
In the years before the pandemic in what seems like another life I would set up a table at a camera show in Pasadena, California every month. After decades…
Mamiya 6: Wrong Shutter Speeds from Spring Lodged in Speed Selector
This Mamiya 6 arrived with a common issue, a broken viewfinder window. But, it also had a problem that I have never seen before, which was various shutter…
RZ67: Replacing Bottom Panel Rubber Covering
I have been out of action for a couple of days last week due to a scorpion sting on my finger. In the first photo, the RZ that I am working on is shown…
RB67 Revolving Backs: Four Versions and Common Issues
I am servicing Mamiya RB67 revolving backs today. Photo one shows all fours versions that are found in the wild these days: 1.) 1971 original style without…
Mamiya 7: Impact Damage to Rangefinder, Frame Lines and Flash Sync
This Mamiya 7 had impact damage and due to that, the rangefinder and frame finder lines needed attention. Also the top cover trauma caused the flash sync…
RZ67 Pro II: Bellows Replacement and Bellows Construction
The question of bellows replacement on RB67/RZ67 comes up often. In this post I will explain a little bit about the bellows construction. This RZ67II came…
Mamiya 645 80mm f/1.9: Focus Helicals Separated, Over-Lubrication
Another Mamiya 80mm f/1.9 645 lens that has come apart from the focus helicals. This is quite common as the grease sublimates and causes the focus to…
Early Mamiya 7: Heavy Wear and Loose Self Timer Window
This Mamiya 7 has the most wear that I have ever seen on a body. It actually has an interested “patina” if you can call it that. This is also one of the…
Mamiya C330 Pro F: Focus Screen Foam and Light Seals
This Mamiya C330 Pro F came into the shop with a focus complaint. In many of these cases, the issue is with the foam on the focus screen becoming…
Mamiya 7 43mm Lens: Bent Filter Ring Binding Diaphragm Ring
This Mamiya 7 43mm lens came into the shop with impact damage. The diaphragm ring would not move. After removing the filter ring, the diaphragm ring did…
Mamiya 6/7 DIY Repair: Thread Sealer and Wind Lever Adhesive
If you are going to be repairing your Mamiya 6/7, please be mindful of a few things: 1.) Easy on the thread sealer 2.) Go lightly on adhesive when…
Mamiya 6 and 7: Three Items Rejected as Unrepairable
While I try to prevent items from being shipped to me that are not repairable so that my client does not have to spend money on needless shipping and…
Mamiya 6/7: Rangefinder Calibration of Lenses and Field Check
The question of rangefinder calibration comes up constantly with Mamiya 6/7 owners. Generally, a quick field test is to focus on something at infinity (a…
Mamiya 7II: Fine Red Sand Inside the Body
This Mamiya 7II gets the distinction of being the camera with the most sand inside the body, at least for the month. The camera arrived from Australia and…
Mamiya 7 80mm Lens: Condensation Haze in Rear Element Group
This Mamiya 7 80mm lens came into the shop from over the ocean (Brisbane to be exact) with a complaint of haze in the rear element assembly. Often, with…
Mamiya Press 50mm f/6.3: Stiff Focus Helical Cleaning
This 50mm f/6.3 (Biogon type) is the widest lens made for the Mamiya Press cameras. This example came into the shop with a very common issue of stuck/tight…
Mamiya C 80mm Chrome Lens: Oil in Shutter, Worn Speeds Escapement
This 80mm chrome C lens came into the shop with a complaint of slow speeds sticking. My client said that he had taken the lens to a repair shop and they…