Lenses
96 posts tagged Lenses. Search within these →
Mamiya C 105mm DS Lens: Slow Speeds and Shutter Release Delay
This lens arrived with typical slow speed issues and shutter release delay. What is interesting is that this lens is the 105mm DS version of the lens for…
Mamiya Shift L 75mm f/4.5 for RB67: Shutter Not Operating
This is a report on the repair of a fairly uncommon lens: Mamiya Shift L 75mm f/4.5 S/L to fit Mamiya RB67. Lens was recently purchased and I believe the…
Mamiya 7 43mm N Lens: Removing the Rear Element and Name Ring
Servicing a Mamiya 7 43mm N lens. The 43mm has a different build than the 80mm and 65mm especially in the rangefinder mechanism. This is because of the…
Mamiya 7 43mm, 65mm, 150mm, 210mm: Locking Shutters Open
This service involves modification of four Mamiya 7 lenses: 43mm, 65mm, 150mm and 210mm). My client requires that these lenses have the shutter blades…
Nikon AI Lens Conversions: A Bit of History
This post is about Nikon AI lens conversions: Many years ago before I specialized in Mamiya cameras, I serviced many of the popular Japanese brands and of…
RB67 Lenses on RZ67: Cocking Torque of C vs K/L Lenses
Mamiya made it so that the RB lenses would work (in full mechanical mode) on the RZ bodies. However, there is a caveat: Mamiya recommended that RB lenses…
RB67 37mm Fish Eye: Replacing a Butchered Locking Ring
This Mamiya RB67 37mm Fish Eye lens gets my vote for "Most Butchered Repair of the Week". My client purchased this lens knowing that the locking ring had…
RB67: Aftermarket Bellows Blocking Infinity Focus, 127mm K/L Haze
This Mamiya RB67 arrived with a complaint of focus error. While I did not see a focus error, I did notice that the bellows had been replaced and while the…
Mamiya ES Lenses for the Auto XTL and Auto X 1000
Servicing a trio of Mamiya ES lenses. These are probably my favorite Mamiya 35mm lenses and they typically don't get a lot of interest. But I feel that…
Mamiya 6 50mm Lens: Full Open Shutter Modification
This Mamiya 6 50mm lens is in the shop for modification to full open shutter. I have clients who need this mod to be able to use the lenses (Mamiya 6/7) on…
Mamiya Press 50mm f/6.3: Dented Rear Rim and Stuck Seikosha-S Shutter
This 50mm f/6.3 Mamiya Press Lens arrived in the shop with a couple of issues: the rear element group had a very severe ding on the edge. And the shutter…
RZ67 65mm L-A Lens: Checking the Floating Element Position
After any service on a Mamiya RZ67 65mm L-A lens, the floating lens position needs to be checked. While it is set at production, lens resolution may be…
RZ67 110mm Lens: Broken Diaphragm Pin and Shutter Replacement
This Mamiya RZ67 110mm lens came into the shop with a diaphragm that did not work. The issue was straightforward, the pin on the diaphragm control ring had…
Mamiya 7 65mm Lens: Damaged Shutter Blades on a Loose Pivot
This Mamiya 7 65mm lens came into the shop with an erratic shutter. Sometimes it would not open or open partially. Looking at the second photo shows one of…
Mamiya 645 80mm f/1.9 Cine Lens: Loose Focus Ring Setscrews
This Mamiya 80mm f/1.9 cinema modified lens came into the shop with a loose focus ring. Not an uncommon issue with this lens as the focus ring is held to…
Mamiya 7 210mm Lens: Service and Lack of Rangefinder Coupling
Servicing a Mamiya 7 210mm lens. The 210mm lens is a bit of an oddball in that it does not rangefinder couple to the camera body. So, you have to estimate…
Mamiya 7 43mm Lens: Construction Differences and Special Tools
This Mamiya 7 43mm lens is having some service done to it and I thought I would point out some differences between it and the other Mamiya 7 lenses in…
Mamiya 7 80mm Lens: Haze Cleaning and an Out-of-Parallel Filter
This Mamiya 7 80mm lens came into the shop with the haze as shown in the first photo. My client told me that this suddenly appeared so I was hopeful that…
Mamiya 7 65mm Lens: Full Open Shutter Modification
Modifying a Mamiya 7 65mm lens for full open shutter operation. Since the Mamiya 6/7 lenses have shutters that stay closed normally, they can't be used…
Mamiya 7 80mm Lens: Drying Out Moisture with Desiccant
This post is about desiccant. Please use it around storage of your cameras. This lens (Mamiya 7 80mm lens) had some moisture on the elements so it has been…
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 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 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…