Mounting lenses to boards for beginners: video

[Greg Davis]

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[Tin Can]

Thanks for posting an instructional video.

Always interesting to see who we are.

[Pere Casals]

Great !!

[DiscoShrew]

Piggybacking off of this thread because I think its relevant.

I have my Schneider 180mm MC on a lens board I bought off ebay, I believe it's made out of plywood. Now - I don't know if this is something I did,

but everything I move the aperture, the bottom scale has a piece of metal which scrapes, and gouges out the lens board. Once it gets past f11 or so it stops, and requires a real tug to move. Is this

a mechanism of the board, or did I somehow put it on wrong?

[Leigh]

Hi Greg,

A reasonable idea, but I think combining enlarging lenses and taking lenses in one video is a fatal flaw.

You might re-do it, splitting it into two videos, one for each subject.

- Leigh

[Dan Fromm]

Piggybacking off of this thread because I think its relevant.

I have my Schneider 180mm MC on a lens board I bought off ebay, I believe it's made out of plywood. Now - I don't know if this is something I did,

but everything I move the aperture, the bottom scale has a piece of metal which scrapes, and gouges out the lens board. Once it gets past f11 or so it stops, and requires a real tug to move. Is this

a mechanism of the board, or did I somehow put it on wrong?

You want to put a thin a spacer between the back of the shutter and the board. Use a compass, mark a set of concentric circles on a piece of paper, cut and try. You may need a couple of rings to get the distance needed.

[DiscoShrew]

You want to put a thin a spacer between the back of the shutter and the board. Use a compass, mark a set of concentric circles on a piece of paper, cut and try. You may need a couple of rings to get the distance needed.

Thank you for the reply Dan.

Just so I understand, the spacer itself can be made out of paper? I'm assuming I would want to use a thicker type of paper then?

[Dan Fromm]

Thank you for the reply Dan.

Just so I understand, the spacer itself can be made out of paper? I'm assuming I would want to use a thicker type of paper then?

Yes, paper. I'd steal a sheet of 20# from my printer. You don't want paper that will compress much.

[Jac@stafford.net]

Nothing personal, but my common complaint about you tube is way too much chatter. The maker's contribution should be evinced by hard tech, DIY, not personality air time.

[AA+]

Many modern lens-shutters also have a screw on the back near the retaining ring matching a hole in the lensboard to prevent rotation. Some people discard this screw, but I drill a hole in the lensboard to accommodate this screw. What is your opinion on whether or not to use the antirotation screw?

Best wishes --- Allen Anway

[Jac@stafford.net]

Many modern lens-shutters also have a screw on the back near the retaining ring matching a hole in the lensboard to prevent rotation. Some people discard this screw, but I drill a hole in the lensboard to accommodate this screw. What is your opinion on whether or not to use the antirotation screw?


Always use it!

[Leigh]

Many modern lens-shutters also have a screw on the back near the retaining ring matching a hole in the lensboard to prevent rotation. Some people discard this screw, but I drill a hole in the lensboard to accommodate this screw. What is your opinion on whether or not to use the antirotation screw?Hi Allen,

I always use it.
If one is not in place, but the threaded hole is there, I install a new one.

I cut a matching hole in the lensboard if needed.

- Leigh

[Jac@stafford.net]

I am an educator. I wouldn’t walk into my class, attach a lens to a board, then leave and expect any learning to happen. My videos are treated as much like my course material as the video format allows.

Fortunately you tube can be fast-forwarded, rather like I did editing your post.

[Mike in NY]

Greg, this was an exceptionally well done video; you nailed it. Some things that I especially liked:

You introduced the topic and explained it was for newcomers.
You combined excellent visual demonstrations with verbal explanations, which appeals to different learning modes.
You showed the range of different circumstances that different viewers might encounter.
Your verbal explanations were easy to follow, you stayed on topic, and there was no excess chatter or going down tangential rabbit holes.
Your production values (stable camera, appropriate angles, clean audio, sharp video) all contributed to effective learning by the viewer.
It made perfect sense to combine the mounting of camera lenses and enlargement lenses in the same video. The materials and processes are so similar that two videos would have been redundant, and I think people would have wondered why you didn't just combine them into one.
You answered a nagging question I've always had about the lip on some retainer rings.


This is the first of your videos that I've seen, and now that I'm aware of your YouTube channel, I am sure I will watch many more.