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Mamiya 7 65mm Lens: Replacing a Broken Flex Cable
This Mamiya 7 65mm lens came into the shop with a very common issue: broken flex cable. This cable connects the shutter to the camera connection pins on…
RZ67 110mm Lens: Straightening a Dented Filter Ring
Client sent in a photo of his dented lens filter ring on a Mamiya RZ67 110mm lens (photo one). While it is nicely dented, I could tell that this would be…
Mamiya C3: Replacing and Calibrating a Broken Focus Screen
This Mamiya C3 came into the shop with a fairly common issue- a broken focus screen glass. Replacement is straightforward, but the finder needs to be…
Mamiya 645 45mm C Lens: Oily Diaphragm Blades and Reassembly
Servicing a Mamiya 45mm C lens for the 645 system. Very common issue, oil on the blades causing the diaphragm to stay open wide. The 45mm lens (and the…
Mamiya 7II: Cracked Curtain Opening Knob and Rangefinder Fix
Servicing a Mamiya 7II with a few issues. The most obvious is that the rangefinder was off by quite a bit. Also, the first photo shows the curtain opening…
Mamiya 6: Battery Drain From a Loose Metal Part
This Mamiya 6 came into the shop with a complaint of a broken frame finder glass and problems with the battery not making connection. On initial…
Lens Filter Quality: Testing UV and Skylight Filters
This post is about lens filter quality. There seems to always be a debate about whether UV or Skylight filters should be used on a lens. I'm not going to…
RZ67II vs Mamiya 7: Measuring Camera Vibration
This is a post about vibration analysis. I happen to have these two cameras on the bench (Mamiya RZ67II and Mamiya7) right now so thought it would be a…
Mamiya 7 vs 7II: Rangefinder Differences Explained
I get asked quite often about the rangefinder differences between the Mamiya 7 and 7II. And I read a lot of misinformation on the internet. So, here again…
Mamiya 645 80mm f/2.8: Diaphragm Stuck Wide Open From Oil
This Mamiya 80mm f/2.8 lens for the 645 wins the contest this week for most oil on a set of diaphragm blades. The symptom that this produces is a diaphragm…
Mamiya C 80mm Lens: Taking and Viewing Lens Focus Mismatch
On intake, all Mamiya C series lenses get examined to insure that the taking and viewing lenses are focusing at the same point. This particular 80mm lens…
Mamiya 7II With Impact Damage: Not Repairable
Some cameras that come into the shop I feel are not repairable. This Mamiya 7II suffered impact damage: cracked top cover, rangefinder mostly inoperative…
Mamiya 7: No Finder LED Display After Impact Damage
Interesting repair on a Mamiya 7: the camera was impact damaged and the obvious sign was the damaged battery compartment. The complaint was that the LED…
Mamiya 7 43mm Lens: Checking the Rangefinder Cam
I was recently asked about my process for evaluating lenses for the Mamiya 7. In addition to other inspections, every lens has an initial check up of the…
Mamiya 7 65mm Lens: Measuring Front and Rear Group Spacing
Inspecting a Mamiya 7 65mm lens for potential focus issues. All lenses that I service get certain parameters evaluated and on the Mamiya 7 65mm and 43mm…
RB67 65mm Early Lens (1971): Oil on Shutter Blades
Servicing a Mamiya RB67 65mm lens. This early example is from 1971 (Type LH61 made from 1970-1972). For the first five years of production the 65mm had a…
Early Mamiyaflex TLR: Fungus and Mold From Storage in a Case
This early model Mamiya TLR (when they were still branding them as Mamiyaflex) came in for a checkup. It has probably been in this leather case for many…
Mamiya 7 43mm Lens: Shutter Not Cocking From Water Damage
Mamiya 7 43mm lens on the bench. This particular example had a mechanical issue with the shutter not cocking. After some external observations and minor…
Brooks Plaubel Veriwide 100: Synchro Compur 00 Shutter Cleaning
I'm thinning out my large collection of cameras and this Brooks Plaubel Veriwide 100 is one that probably needs to go to a new home. As you can see in the…
Mamiya 645 80mm f/1.9 N: Wrong Lubricant on Focus Helicoid
This Mamiya 645 lens, 80mm f/1.9 N, came into the shop with a focus that was very tight and grinding. Seemed to have no lubrication on the focus helical…
Mamiya SF 150mm RB Lens: Drilled Name Ring and Parts Donor
This Mamiya SF 150mm RB lens came to me with a name ring pre-drilled and a filter ring with some subtle dents. These are not too important flaws in this…
Mamiya 7 80mm Lens: Drying Out Moisture Inside the Lens
This Mamiya 7 80mm lens was subjected to moisture. Fortunately, no damage to the shutter. After removing the lens group and some disassembly and cleaning…
Mamiya 7 80mm Lens: Water-Damaged Shutter Not Opening
This Mamiya 7 80mm lens came into the shop with a complaint that the shutter was not opening. After some disassembly, the shutter looked fairly clean…
Mamiya 645 Super/Pro/ProTL: Damage From a Broken Mirror Stop
I have done a few posts about the Mamiya 645 Super/Pro/ProTL mirror stop replacement but feel the need to post again as I have been seeing many of these…