Homemade 35mm Adapter

[Dino Reyes]

Yes Kevin I am currently working on a Canon version, a design somewhat different that those being done right now-I'm surprised no one has shown something closer to what I'm developing-it seems obvious to me. I've just did a test last night that was stunning in optical quality-possibly far better what what's being show now. Because of the body design an Agus35 adapter fits like a hand in glove. I have to wait on a few more pieces but hope to be finished by another 10-12 days or so before I finish with this prototype. I am trying to develop one that would not cost thousands but maybe sub 1k. stay tuned...

[Kevin Maistros]

I think we should definately get a lil ohio get together going and try out these 35 adapters.. or discuss, attempt new things/etc... I think it'd be fun if we all got together and made something.

Luke I'm especially interested in getting together sometime and trying out things for the XL.

Dino, please keep us updated.

[Robert Knecht Schmidt]

Luke, you should fill out your location in your profile.

[Filip Kovcin]

i just finished my "third generation" (1st - cake box 50psc; 2nd-cakeCDbox 25pcs;3rd-plywood type) agus 35, and still hace sound problems. i'm using original CD motor, which works very quiet when in horisontal position, but works loudly in vertical position. maybe plywood box produces also some resonance, but i'm not sure. did you expirienced such a problem? if yes - maybe some ideas how to resolve it.

thanks,

filip

[J. Clayton Stansberry]

Filip,

I have currently ran into the same problem. I retightened everything and that helped a little bit, but not much. I am running my CD motor off of 2 AAA batteries and am wondering if the lack of voltage is making the CD wobble or something? Right now that is the only thing I can think of, just don't know if that is it. If you fix it let us know. I may be able to work more on it this weekend. If I fix, I'll let you know...good luck

Clay

[Spencer Houck]

I'm no electricity expert, but I believe a lot of people are misguided in their battery talk. Regardless of your use of 2 AAs or 2 AAAs the voltage used will be the same. The only thing you are changing is the capacity of power they hold.

Also, in reply to the Ohioan get together, I'm now back down in Athens, OH at Ohio University. I was home in Akron over break.

Spencer Houck

[J. Clayton Stansberry]

So, 2 AAA's will put out the same power as 2 AA's? If that's the case then I have some other noise issue! Back to the drawing board...

[Brian Huey]

2 AAA's will work just as well but the batteries will die faster.

Look to see what the milli amp hour rating (mAh) is (if it lists it) to determine the difference betwee the AA and AAA.

Cheers,
Brian

[Louis Feng]

I have been wondering what stops the camcorder makers to make their lens work the same way as film lens?

If I'm not mistaken a digital camera has the same DOF as film cameras. Can't Sony just use their digital camera parts on the video camcorder?

[Bob Hart]

Noisy motor. resting flat, any out-of-balance on the CD will cause the shaft to maintain contact with the bearing(s). The weight of the whole CD and armature presents an end load which also keeps things tight.

Upright - the out-of-balance on the CD might just be enough to lift the shaft off contact with the bearing and drop it back = rattle, or you will get end-float = rattle or in more extreme examples little shifts off the focal plane.

Two cures you can try :-

1. Lube the front bearing. You should use the special oil made for oilite or sintered bronze bearings. Anything else will destroy their ability to wick up oil and stay damp and thus lubricated.

2. Restore the pressure plate from the CD player to the hub. This should fix any end-float noise.

Otherwise, you will have to blimp the CD enclosure and possibly have to isolate the motor from the structure onto a rubber mount.

[Tom Christensen]

Ok. So after 700+ posts, I had to try this.

Stuff:

GL2 - from Zotz (plug)
Macro from a Digital Optics W/A adapter ($60 cheapie from Ebay)
GG is you guessed it - Maxell disk - $9
lens is Pentax 1:2 50mm from ABCPawn - $35
Vise grips - had those
Motor from my son's CD player - don't tell him. He needed a new one anyway. $10
Sun flowers from somewhere.

Output was only flipped in AE. No other correction done.
Compressed to 320x160 Sorenson 3.

Here is the setup:

http://www.arcsand.com/side.jpg
http://www.arcsand.com/front.jpg
http://www.arcsand.com/bacl.jpg


Here is the video (11meg file):

http://www.arcsand.com/agus35.mov

I can set out a smaller file if anyone wants.

I pulled the zoom back from the camera in the first part of the video for fun. I am impressed with the results. I get some flicker from what appears to be the spin freq of the disc. A little vignetting, but not much.

Whatever case I build, I will make sure the both the lens and GG are movable in relation to the camera since it was tricky to get those settings right.

Very cool, Agus.

Tom

[Taylor Moore]

Hey Tom,
Test looks very good.

Just to let you know your video (as it appears to me) has the last 2/3 of the video to be black.

That should cut down on your file size:)

Great job on the Agus test.

[Tom Christensen]

Thanks. Just cut down. Didn't do much for file size - now 10 meg.

I am re-rendering small version and will post shortly.

Tom

BTW - that was 320x240 not 320x160.

[Danny Tan]

http://www.arcsand.com/agus35.mov linked.
is your macro a +10? and jim should post plans on building the project box for the gl1

and tom, the first few seconds of the video, is it without the macro lense?

[Tom Christensen]

Smaller version 2meg.

http://www.arcsand.com/agus35_sml.mov

Tom