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-   -   Homemade 35mm Adapter (https://www.dvinfo.net/forum/alternative-imaging-methods/17195-homemade-35mm-adapter.html)

Barry Green December 4th, 2003 10:43 PM

The XL1 is going to be the most difficult camera to adapt to the Agus35. You need a lens to focus the image from the ground glass onto the CCD's. In the mini35, for the DVX100 and the PD150, they use the camera's built-in lens (as Agus is using for his adapter). For the XL1 mini35, they supply a relay lens for that purpose. If you have an XL1 and don't have a relay lens, you won't be able to use the Agus35 (unless you want to stick it on the front of your 16x lens).

Agus Casse December 5th, 2003 12:54 AM

Today we shoot a Maseratti racing car, i got some awesome shoots that i will post later...

Jacob, you can adapt 35mm lens to the xls, but you wont get DOF, but you can find some canon SLR lens (could be old) that are used to get pictures to really close distance, in that way you can shoot the ground glass with no problem... so in other words you need to find a relay lens that replace your 16x one to a macro type one (dunno if macro is used to take close pictures).

I have tons of work i am sorry for no posting the plans yet, but i really barely have time to sleep.

Peter Sciretta December 5th, 2003 07:39 AM

I have a pd150 camera

I need to magnify the image as I can't focus on it and its too small when its in focus...

I can't afford to break any of my wide angle lens as agus did.

Can I by a macro or "telephoto" lens that will do the same thing? or amy i thinking wrongly?

Dino Reyes December 5th, 2003 11:33 AM

Agus35 for the XL1S
 
I actually believe the XL1S is perfectly suited for the Agus35. There may be some other costs involved but very nominal comparison to purchasing/leasing the Mini35. So far these are my plans, the most important part is the support bracket, which I have just ordered this, a baseplate with rails $295(http://www.jbkcine.com/i-1.JPG) from here http://www.jbkcine.com, I also have an EF adapter, but you can probably pick one up here $395, http://www.virtualcybervision.com/xl1/EOSMAIN.htm (btw, all EF adapaters are real pieces of junk, they don't really work unless you have, like, a 500mm lens) but since they are machined one offs, you might be able to pick one up on ebay a bit cheaper. Now once you have the adapter, you can put on a standard prime lens, hopefully, I'll know when my brackett and rods come in, I should just about be able to stand a 25CD container right on top + batteries, and the lens on the other side. Since the camera already large I think good support base is important. As far as the glass, I've working with a stain glass person to help me cut different types of glass I want to test out. Very cheap actually, $5 per glass cut in the shape of a CD. I'll either dremel one side to make a gg (ground glass) or get them to use etching acid (which i think could be best) and also, just for experiementing I ordered 2 - 5 x7 sheets of optic quality gg like $30 bucks total... so that's where i am at so far with my Agus35, I'll keep everyone posted, stay tuned....

ps: also why the xl1 is great is because of it's AMAZING low light capabilities, once you have an ideal optical adjustment the results should be stunning...

Peter Sciretta December 5th, 2003 11:38 AM

the pd150 is even better than the xl1 in low light, and I think would make the best camera for use with this type adapter

Charles King December 5th, 2003 12:00 PM

Agus. Can't wait for your tutorial. One questions though. what is the rpm of the motor you're using to spin the disc?

Dino Reyes December 5th, 2003 12:08 PM

PD150
 
sounds great, can't wait to see a Agus35 adapted to a one-fifty, might want to try this for a telephoto adapter that is reasonalbe price.... http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2969620290&category=29964 I would be interested to see how you support the unit once attached...

Agus Casse December 5th, 2003 05:43 PM

<<<-- Originally posted by Charles King : Agus. Can't wait for your tutorial. One questions though. what is the rpm of the motor you're using to spin the disc? -->>>]

I couldnt tell, but damn it go fast... i will try to post some new videos tomorrow

Agus Casse December 5th, 2003 05:45 PM

Dyno,

You could make your own support with much less than that money. Still it is a great idea, cause then you will be able to adapt other film accesories like matte boxes, and larger lens.

Devin Doyle December 6th, 2003 09:24 AM

My Agus 50mm Mod
 
Hey everyone, after tracking this thread with bated breath and waiting for our good buddy Agus to release a "how-to," I couldn't take it anymore and finally went out yesterday and made my own "Agus 50mm mod." Based on the "Ghetto 35mm" (which is a sweet name, Jun) and Agus' pics I went around town and collected:

- 30 cd-r pack (for the spindle and clear cd)
- 3V electric motor + AAA housing (gotta love Radioshack)
- A rear lens cap for my Dad's old Olympus 50mm lens
- Some black paint from Wal-Mart for a buck
- Already had sand paper, a glue gun, and the lens

Hard to believe that's all you need, but sho'nuff it is. First I took the rear lens cap and sawed off the back (a laborious job indeed for a young squire with only a hacksaw) but I managed. The reason I used this to connect the 50mm lens to the body was so that you could easily interchange lenses and avoid gluing the whole lens to the body (pops wasn't too keen on that one, see the pic below). Then with a bit of elbow grease I cut the 50mm hole in the top cover of the cd-r spindle, then the 58mm hole in the back (for my GL1's lens).

It was then that I realized that our 58mm cams (VX2K, GL1, GL2, PD-150) require a hole that covers part of the middle of the back - exactly where the motor needed to sit. So, I opted to install the motor from the front. (more cutting in the front part of the cd-r spindle) I next took some very fine sandpaper and scratched away at the plastic cd. I broke an old, soft, plastic cd case and mounted just the center part to the shaft of the motor, then popped the cd on. (You can barely see it in the pic labeled "guts". This way it's pretty much centered with little vibration that Agus experienced.

After that - I got out the hot glue gun and went to town. I adhered the now back-less back lens cap around my 50mm hole, and stuck the motor in and glued it securely directly beneath my lens mount. Hot glue is about the best thing for this because it's strong, but can easily be broken away if you mess up. I found it helpful. Of course, before I glued the motor in place I put the lens on the back lens cap mount I made and checked which focal length resulted in a sharp image on the scratched cd. Then I glued the motor with the cd on. Next I simply painted the whole thing and allowed it to dry overnight.

It works like a charm on my naked eye, unfortunately, my GL1 is in the shop due to a faulty LCD (crocodile tears) Therefore I don't have any video to share. I took the pics below so you can see the finished product. The pics of it in action are pretty sheissty, not too much I can do with a digi-cam, and they really don't do justice to what you see with your eye alone.

I attached it to my parent's old VHS-C cam and it works pretty well (as well as it can work with such a consumer cam) but it's really quite amazing how the image is projected onto the spinning plastic. Anyways, hope I didn't babble too much, and I wanna send thanks out to Agus, Jun, and everyone else on the thread for contributing ideas! I hope this post can help someone out!

http://www.par-t-com.net/50mm_wide.JPG
http://www.par-t-com.net/50mm_lens.JPG
http://www.par-t-com.net/50mm_guts.JPG
http://www.par-t-com.net/50mm_far.JPG
http://www.par-t-com.net/50mm_close.JPG

Agus Casse December 6th, 2003 10:53 AM

Good job Devin, now you are the third owner know to have a Agus35 built (i love the name... why would be ??)

Have a question, how exactly did you made that part where you attach your lens ? i looks like it has a lock in system.

Again, congratulations, and i would suggest you to use a 600 sandpapers for the cd, and make little scracthes, as you will noticed then with the camera you will get a better stable image if you make the GG with it.

Also, for everybody, let me recomend to shut down the steady shot, it wont work with Agus35 and again you will get a better image, also put the auto shutter to off and set it manually.

Noah Posnick December 6th, 2003 10:58 AM

Looks good, could you give me the model number of the motor parts, as I'll be making my trip to radio shack soon. One quick question: it doesn't seem that you have a way to make sure the connection between your 35mm adapter and the GL1 is secure. In other words, what's preventing the adapter from falling off the GL1 when your lets say in the process of a tilt?

Devin Doyle December 6th, 2003 11:09 AM

Agus - Thanks! The part where the lens connects to the body is merely a back lens cap for an olympus lens, the only thing I did was saw off the back so that way it became a ring. It does lock, but not enough that I'd be comfortable shaking the system around a lot. It was 3 bucks at my local camera shop. Once again, kudos for coming up with the cd spindle idea and starting this thread!

Noah - It's just a 1.5V-3V motor. At radioshack they should have a drawer of them. They have larger motors, but i figured this would do the trick and is small enough. It's powered by 2 AAA's. About connecting it to my camera - there's nothing preventing it from coming off. Since my cam is at Canon's repair factory I have no way of working on that facet of the adapter - yet. So try some things on your own, it shouldn't be too tough!

Agus Casse December 6th, 2003 11:21 AM

Is there too much motor noise ? i am having serious issues about audio in my agus 35, seens like i will have to put it inside, or look for a way to make it silent.

Devin Doyle December 6th, 2003 03:13 PM

It's not completely silent, but then again it's not terribly loud either. There's no way you could use onboard audio with it running though. Where is your motor located? I never saw it in the pics.

Agus Casse December 6th, 2003 05:16 PM

Just in front of the mic :(... eh

i need to buy a boom, or a shotgun...

Peter Sciretta December 6th, 2003 10:04 PM

I just made a model and i haven't been able to get the cd to rotate yet but it doesn't seem even with all the light blocked out, that i am getting enough light... I can only see an image if i point it directly towards a light... is something wrong?

Peter Sciretta December 6th, 2003 11:56 PM

This may be really stupid, but I realized I didn't have the fstop up to let more light in on the 35mm lens...

now to get the disc to spin!

Pete

Mike Perkin December 7th, 2003 01:31 AM

Hi everyone,
I stumbled onto this topic about a week ago and I've been very interested in trying to make one of the Agus 35 adapters. About a year ago I did alot of research into the P&S Technik adapters but it was out of my price range, however I love the shallow DOF 35 mm lenses give the image. I decided to give the Agus35 a try. Here is my experience so far.

The camera I am using is the Sony VX-1000. I figured that the 2 big problems I would encounter would be how to attach and center the motor to the spindle base and how to attach the cd to the motor..

I purchased the motor at Radio Shack for a couple dollars. It runs off of 2 AAA batteries. I also bought a small on/off switch. Underneath the spindle base I used thin wood so I could mount the motor to something rigid using 2 machine screws that screw into the bottom plastic of the motor.

Next, with the motor secure I soldered the wires to the on/off switch and batteries and centered the plastic spindle bottom to the wood using 4 wood screws. This basically serves as a fastener for the 3 tabs on the bottom of the spindle housing which holds the housing secure.

Next using a hole saw drill bit I drilled a 72mm hole through the bottom of the plastic and wood to accept the lense of my VX-1000. I'm planning on attaching a 72mm filter ring to the outside of the hole to make fastening the camera easier.

I then attached the the cd which I sanded using 400 grit sandpaper bought from Home Depot. To center the cd on the motor I used parts from an old cd burner that I took apart. I then taped the piece of hardware in the center of the sanded cd. The hole in this hardware accepted the motor shaft and the cd centered perfectly.
Next I drilled a hole in the top of the spindle housing to attach the 35mm lense, covered it with black duck tape to block the light and assembled the base,sanded cd, top housing,35mm lense and vx-1000 together.
With all the pieces assembled to my amazment I saw the upside down image in the spinning cd with all the elements of shallow DOF. When the cd spins the image begins to take on a hologram effect. All thats left to do is capture the image with my camera.

A couple things I noticed: A 25 pack spindle did not work for me because the spinning cd was to close to the 35mm lense to give me a usable image so I had to go with a 50 pack. This gave me just about the right distance to see the image in the cd properly. And also I had to use my set of close up macro filters in order to be able to zoom in and still be able to focus my VX-1000 on the image on the spinning cd.
The images seem to be very dark. Is this normal?

Its still a work in progress. I'm gonna post some pictures of my device soon as I figure out how to post jpeg files to this board. Sorry for the long post
Bye for now
Thanks ,
Mike

Jeremiah Rickert December 7th, 2003 01:42 AM

Ahhh...
 
You posted right before I was going to point out, that I cannibalized an old CDROM. (note: even though it was only a 12x, it worked, and I felt strange pangs of guilt taking it apart...I think I paid $60 for the thing originally)

Anyway, in the middle of the guts, is the spindle that "captures" the CDrom when the tray slides in. (it's really rather ingenious how these things are built). The spindle is mounted so it slides into place in the cdrom's center hole as the tray shuts. After removing the spindle, there was another piece, a round plate, that is built into the cdrom housing, that is magnetized. When a CDrom is on the spindle, the little suciton-cup shaped thingy sticks to it and holds it on.

As Mike mentioned, the radio shack motors fit onto the spindles rather easily.

BTW...the one part of this process that I lack is an SLR lens. I've seen several used ones for sale fairly cheap. What sort of focal length should I get. I've seen variance from 25mm through 200mm.

Jeremiah

Zac Stein December 7th, 2003 03:33 AM

jeremiah, start with a 50mm, that is the standard size... basically it will mimic close to your natural eyes perspective of vision.

Zac

Jeremiah Rickert December 7th, 2003 03:41 AM

fd
 
I found a used canon FD lens for a few bucks.

1:1.8

Would this work?

Thanks

Jeremiah

Yang Wen December 7th, 2003 09:54 AM

Now.. when this thing is working... do you focus with the 50mm lens? while you key your cam focus on the CD correct? And I also assume that you have to zoom with whatever lens you attach to it?

Charles King December 7th, 2003 10:04 AM

It would nice if those that have completed their mini 35 post some detail pics. I for one get confuse with all these discussion that just tell how it's done. Don't forget, pics say a thousand words. :)

Peter Sciretta December 7th, 2003 10:17 AM

What would be the different in sizes of lenses? would one lense give a smaller DOF then another?

Richard Mellor December 7th, 2003 11:13 AM

I just finished my 'Agus35'. I found an old Sony Walkman, used the motor, epoxying it to the blank CD. there seems to be virtually no vibration. Also used a lens adapter, which I epoxied to the rear of the CD case for attachment to the camcorder. The sanded CD captures the image perfectly! My camcorder - a Panasonic PV-DV-400.

Next upgrade: ground glass.

Thanks to all for this great project and extremely helpful information.

Charles King December 7th, 2003 11:29 AM

Com'on Richard, Some pics of your unit will be very will be very helpful here. Please. Congrats by the way. Hope to see some photage shot with it.

Noah Posnick December 7th, 2003 12:05 PM

Could anyone please give some recomendations for a "macro filter" for the Canon GL1 that will allow me to keep the camera focused while zoomed in at a short distance.

J. Clayton Stansberry December 7th, 2003 01:35 PM

Richard,

Could you give some more details? I haven't made one yet, but was also thinking about canabilizing a CD player. Seems like that's what it was made for - to spin CD's and would probably work very well. If you have pictures, you will need to post them as a link so we could see. I look forward to hearing more! Congrats!

Clay

Stewart McDonald December 7th, 2003 01:37 PM

Will any 50mm lens do? Or does it have to be a specific model/type ?

Peter Sciretta December 7th, 2003 04:52 PM

yes please tell about how you took apart the cd player... that could be a much easier/better alternative to this radio shack mottor stuff...

Jim Lafferty December 7th, 2003 05:53 PM

<<<-- Originally posted by Noah Posnick : Could anyone please give some recomendations for a "macro filter" for the Canon GL1 that will allow me to keep the camera focused while zoomed in at a short distance. -->>>

Century Optics makes 2x, 4x and 7x macro adapters. They do not come cheap, though -- $210 from B&H.

I'm making an Agus35 Pro for my GL-1 without a macro adapter. I'll let you know if/how I get it to work.

- jim

Yang Wen December 7th, 2003 06:33 PM

What is the concept here? Are there any publications out that can summarize the idea of the mini35? I tried holding a SLR lens to my Cam's lens and i get a blurred image.

Thanks

Jim Lafferty December 7th, 2003 07:06 PM

<<<-- Originally posted by Yang Wen : What is the concept here?-->>>

The concept is that you use your DV camera to record a 35mm image suspended on a semi-permeable screen.

That's it.

How you get that done best is up to you, though Agus's method is a good one - use a clear disc that is sanded to a 'frosted' surface and spin it through the beam of light passing through a 35mm lens. The disc suspends the image in mid-air, for your miniDV camera to focus on. You set the focus on your DV camera manually, and use the 35mm lens to pull focus with.

Some thoughts:

People seem to be thinking of ways to upright the image and confining their answers to the adapter. Why not use mirrors mounted via a hood on the LCD screen to upright the image?

You could sand the disc irregularly, leaving gaps that are entirely clear, or place black tape on the disc, too. With this you might get some interesting strobe effects, like the lower shutter speeds on the Sony cams.

The disc could be multi-colored, or you could use multiple discs of different colors instead of filters.

- jim

Jeremiah Rickert December 7th, 2003 07:59 PM

I'll try again...
 
What sort of SLR lens are you guys who have succeeded used?

THere are tons of them for sale in pawn shops for cheap, but I don't know which one to buy.

One guy answered 50mm, that's fine, but I noticed some that are 1:1.8 and some that are 1:2.8

I don't know what those ratios mean, so if someone could enlighten me, I'd appreciate it.

Jeremiah

Agus Casse December 7th, 2003 08:17 PM

Jeremiah, you could as a experienced photographer, he will tell you how to choose lens for each type filming needs.

Jim, once you build it, you will notice that the speed of the disc spinning will be the shutter speed. I can tell for sure about that cause my TRV18 have manual shutter speed, and i its broken, so i cannot use manual focus to try another AE programs.


Still, i hope this week i will able to work on the plans to post it, also i have news that a comercial version with with real ground glass, no audio noise from the motor, and with full mounting like the mini35 is on planning stage... we are projecting the whole package under 800 bucks

Jeremiah Rickert December 7th, 2003 08:28 PM

not to belabor...
 
Not to beat the point to death...but it shouldn't be difficult for you who have succeded to hold up your lens, read the ratio off of the side of the lens, and report it on this board.

Even if you can't explain what the 1:1.7 or 1:2.0 means, you should be able to at least read the side of your lens.

Don't get me wrong, I appreciate the thread and the work that people have put into it. (I remember a similar thread back on alt.movies.independent a couple years ago), but before I go buy an SLR lens, I'd like to make sure I can get one that works.

Jeremiah

Matthew Groff December 7th, 2003 08:32 PM

1:1.8 etc. is the maximum aperture opening I believe. This basically means how much light you can allow to pass through the lens. I think that for this particular use, the more light coming through the lens, the better. So the where the ratio is 1:X, the lower the X the better. 1.8 is a good number.

mg

Jeremiah Rickert December 7th, 2003 09:39 PM

thanks...
 
Cool beans...I appreciate the pointer.

Threre's a store here in town started by a bunch of mini-storage owners, who are selling off the stuff from the people who didn't pay their bills.

They have some interesting stuff from time to time.

Jeremiah

Agus Casse December 7th, 2003 09:43 PM

My minolta lens are 50mm 1:2 and i get no vigneting.


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