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Can I lock a frame preselector lever for different lenses?


mingmac

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I just got an M6 and i have tried to play the lever but i wonder if i can lock it. I just hope that it's possible cos if i change the lens that means the frame line will be changed.

 

Congratulations, I have 2 M6's and think they are wonderful, simple and uncluttered discreet camera bodies. If you look at the top of the lens aperture without a lens in place you will see circular wheel. This lines up with the lens cam on different lenses giving you a bright line screen for the lens you have mounted plus another. The cut outs around the lens flanges vary depending on the focul length of the lens causing the circular wheel to deflect for different M lenses. The ability to observe differing bright line frames once a lens is mounted saves the process of having to change lenses to see how the proposed view frames. Enjoy your M6 in good health

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Congratulations, I have 2 M6's and think they are wonderful, simple and uncluttered discreet camera bodies. If you look at the top of the lens aperture without a lens in place you will see circular wheel. This lines up with the lens cam on different lenses giving you a bright line screen for the lens you have mounted plus another. The cut outs around the lens flanges vary depending on the focul length of the lens causing the circular wheel to deflect for different M lenses. The ability to observe differing bright line frames once a lens is mounted saves the process of having to change lenses to see how the proposed view frames. Enjoy your M6 in good health

 

Not simple enough for some!

 

Mingmac, ignore Kenneth's post which is utterly confused. The "circular wheel" and lens cam are part of the rangefinder mechanism and have nothing to do with which brightline frames are displayed in the finder. Those are controlled by a tiny lever in the side of the lens mount near the preview lever; the corresponding bayonet lug has different dimensions on different focal length lenses.

 

There's never been a Leica production model where the preview lever can be locked.

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Mingmac,

I am not sure why you want to do this and as John has said the lever can't be locked, however there is a temporary resolution. Take a small piece of card of the appropriate thickness and jam it behind the preview lever when it shows the frame that you want to see.

Very Heath Robinson - I used this when I first mounted a VC 40mm f1.4 which brought up the 50 mm frame line and I wanted the 35 mm frame. I used this for a couple of days before I filed down the claw on the lens mount to bring up the 35 mm frame.

Doubt if it's a long term solution though.

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Not simple enough for some!

 

Mingmac, ignore Kenneth's post which is utterly confused. The "circular wheel" and lens cam are part of the rangefinder mechanism and have nothing to do with which brightline frames are displayed in the finder. Those are controlled by a tiny lever in the side of the lens mount near the preview lever; the corresponding bayonet lug has different dimensions on different focal length lenses.

 

There's never been a Leica production model where the preview lever can be locked.

I bow to your superior knowledge you smooth talking ...................
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What i actually meant was temporarily locked. For instance, I switch from 35mm to 50mm lens so i want to see what i will get on the viewfinder and i know that i can play with the preselector. But what i want is i dont want to spend some time to push the preselector lever until i get the frame line i want for every picture. By default, the frame line is actually for 35mm so i dont want it to spring back to 35mm while im using 50mm, i just want to stop at 50mm frame line during that time. Hope i clarify what i mean.

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Sounds a bit confused to me. If you put the 50mm lens on, the mechanism of the bayonet engages the 50mm frameline and keeps it there. If you put a 90mm lens on the 90 framelines appear and stay there. You only need to toggle the selector to see what you would get "if" you had another lens on. If your camera is reverting back to 35mm frameline for every lens then there is something that needs a service or repair. If you have no lens attached it sits upright, as you say in the 35 frameline position.

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What i actually meant was temporarily locked. For instance, I switch from 35mm to 50mm lens so i want to see what i will get on the viewfinder and i know that i can play with the preselector. But what i want is i dont want to spend some time to push the preselector lever until i get the frame line i want for every picture. By default, the frame line is actually for 35mm so i dont want it to spring back to 35mm while im using 50mm, i just want to stop at 50mm frame line during that time. Hope i clarify what i mean.

 

I might be completely misunderstanding what you are saying, and if so I apologise. But it seems possible from what you've said that you believe the selected framelines affect the field of view of the lens.

The framelines are only there to show you the field of view of the mounted lens. When you move them using the frame selector lever, it's just showing you what you would get if you changed lenses. If you leave the same lens on the camera and move the selector lever - it will have absolutely no effect on the recorded image. Sorry if I've misunderstood.

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If you mount an M lens it will bring up the correct frame line. You move the preview lever to simply do that, i.e. 'preview' the other frames without having to physically change the lens - as mentioned above the frames do not affect the image in any way.

 

If you have a screw thread lens you need to match it to the correct LTM/M adapter to get the correct frames - it did occur to me that maybe you are using a screw lens with the wrong adapter and therefore are seeing the wrong frames with your lens on the camera?

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Hahahaha, my bad. Now i know what the mistake is. I actually dont have 50mm lens yet but i have tried to lock the 50mm frameline while im using 35mm lens. No wonder that it doesn't work. Let me get 50mm lens first then i can let u know if it's broken. THanks guys and sorry for confusion.

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