Sun
Carbonite Member
I quickly learned that not all C mount lenses are compatible with the Micro M4/3 system.
I bought a ancient Sony TV B&W camera that used valve or tube technology just for the Zoom lens. Its a beautiful lens but it was to broad at the neck by far to mount on to the m4/3 adapter. I've seen Ebay sellers claim these fit but I say Caveat emptor, buyer beware.
To make the lens fit required major surgery. I basically cut the barrel off using a metal hack saw blade. This felt gross but I took my sweet time and was careful not to cut into the center barrel that held the optics.
Now the Grey ring is JB Weld, its a hard epoxy resin that claims mega strength and I tend to agree. I have used it to repair car water radiators and pitted engine heads.
I basically glue a 5mm C mount ring onto the Sony's own ring which was a tottally difference thread size and shape. I documented the JB Weld process on the Rainbow Security camera lens below. This is a very bright lens at F1.0 and again it would not mount into the m/43 adapter so I had to remove its housing, electronics and body to JB weld on an c mount 5mm adapter.
Now the lenses are not perfect as I have to mount a second 5mm C mount adapter for Macro shots. These 5mm c-mount adapters makes the CS lens work with the C mount camera body. But when fully turned down the lenses focus from 5 feet away and beyond infinity.
The Rainbow security lens is very bright at F1.0 The zoom and iris had electric motors and circuitry attached to them which I considered powering up but in truth is not needed at all. With a flick of my finger nail I can snap the Iris close down to F300, it has ND4 filter built into it as well. The focus is on the barrel which twist to focus as they do.
The images are strange and these lenses are totally not for the casual shooter.
The images are dreamy and feel slightly dessert like, as in dry and old. Both lenses give ridiculous Bokeh which was my main goal honestly.
I have been trying to upload some images but it seems like I have reached my limit?
At any rate these old C mount lenses give some very unique images that I'm sure some film maker or photographer would be after. So if don't give up if those old c-mounts do not fit. DIY the mount and have fun.
I bought a ancient Sony TV B&W camera that used valve or tube technology just for the Zoom lens. Its a beautiful lens but it was to broad at the neck by far to mount on to the m4/3 adapter. I've seen Ebay sellers claim these fit but I say Caveat emptor, buyer beware.
To make the lens fit required major surgery. I basically cut the barrel off using a metal hack saw blade. This felt gross but I took my sweet time and was careful not to cut into the center barrel that held the optics.
Now the Grey ring is JB Weld, its a hard epoxy resin that claims mega strength and I tend to agree. I have used it to repair car water radiators and pitted engine heads.
I basically glue a 5mm C mount ring onto the Sony's own ring which was a tottally difference thread size and shape. I documented the JB Weld process on the Rainbow Security camera lens below. This is a very bright lens at F1.0 and again it would not mount into the m/43 adapter so I had to remove its housing, electronics and body to JB weld on an c mount 5mm adapter.
Now the lenses are not perfect as I have to mount a second 5mm C mount adapter for Macro shots. These 5mm c-mount adapters makes the CS lens work with the C mount camera body. But when fully turned down the lenses focus from 5 feet away and beyond infinity.
The Rainbow security lens is very bright at F1.0 The zoom and iris had electric motors and circuitry attached to them which I considered powering up but in truth is not needed at all. With a flick of my finger nail I can snap the Iris close down to F300, it has ND4 filter built into it as well. The focus is on the barrel which twist to focus as they do.
The images are strange and these lenses are totally not for the casual shooter.
The images are dreamy and feel slightly dessert like, as in dry and old. Both lenses give ridiculous Bokeh which was my main goal honestly.
I have been trying to upload some images but it seems like I have reached my limit?
At any rate these old C mount lenses give some very unique images that I'm sure some film maker or photographer would be after. So if don't give up if those old c-mounts do not fit. DIY the mount and have fun.
