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John, very interested in seeing footge...
I haven't had great luck putting anything together just yet... I guess I'm just not great at putting stuff together... |
Just tested my frosted CD with the lens, was surprised it looked very good and it wasn't even in a casing. Will try and get this done over the next week and post some footage.
I put the scratched cd directly infront of my GL2 and it went into macro mode and focussed on the cd, would I still need a fresnel lens or a macro adapter? I'll test some more when I have a casing. |
Alright, some questions on tightening up the design...
I put mine together tonight, after having received my macro zoom yesterday, and it's functional, but there is a noticable haze around everything. I used 600 grit sandpaper, and did my best to put down an even surface. I've got my apertures wide open, and setting the 35mm lens to an infinite focal plane, I've set my DV camera's manual focus. So: how do I remove the haze, or cut it down significantly? Agus -- in your experience, was haze a problem? If so, do I need to up the speed of my motor? (I'm using a CD motor, but have a Radio Shack 18,000rpm motor at hand...) Jesus this needs light :) - jim |
Dunno what is haze ....
BTW.. tip for all, i found a little teasure... look for fake cds what are already translucent... they are 100% perfect GG !!!!! I found 2, and i have a 20% image improvement... |
what do you mean fake cds?
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<<<-- Originally posted by Danny Tan : what do you mean fake cds? -->>>
They are the CDS that protect the CDR in the 50 spindle packs, they are useless, and they are crystal clear. but some have a traslucent texture in one side that works a like a perfect GG |
Agus,
Are you saying do not sand the translucent CD we get in the case? Fake CDs, this is all I can think of. "ook for fake cds what are already translucent." Then, what is the purpose of spinning them? I have all the stuff sitting in front of me to make the AGUS35, but want the best results...that's why I haven't made it yet! Spill the beans Agus! We need detailed news! You are the man.... Clay |
No no no ... most spindles comes up with fakes cds that are absolutely clear, but some of them in one side have a sanded texture just like a real Ground Glass, those are not needed to be sanded... cause they have a sanded texture already made..
i have been trying to build a baseplate with rods similar to http://www.jbkcine.com/i-1.JPG i made it, but still isnt too rigid. need to work more... ANOTHER TIP.. when painting the Agus35, be sure to paint the inside side, cause if you dont, any scratch could ruin your paint and you dont want any outside light to ruin the image in the GG |
can you post pics of your ground glass? i am using the "fake CD" that came in my spindle and used 400 grit sandpaper to sand one side but i want to see how yours looks like
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Agus,
What brand of CDs are you buying that have this "already grounded glass?" The two I have are clear, so I must frost them myself (man I hope I don't screw both up!). As for the support, I am hoping to get some long rectangular aluminum brackets that create a mount to both my camera and box (I plan to use lots of washers). We'll see what old Lowe's (a hardware store here in Texas) comes up with! The more the better...keep posting everyone!!!! Clay |
and also, can you post pics of how your metal mounts with go on your camera?
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By "haze" I mean that the image has some crisp details that are obscured as if they're shot through a fog. I'm re-attempting my initial design today, using the Radio Shack motor instead. If increasing the disc's rotation doesn't help, I'll assume it's the ground glass that's causing my problem.
Agus -- what kind of motor are you using to spin your GG? |
I can tell you the best motor by far is one from a cd disc man
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Well, that remains to be seen. I've already used one, and it's certainly quiet and stable, but it may not rotate at a high enough rate.
More to the point -- I've seen a lot of Agus's footage, but little of everyone else's. So I'm inclined to use Agus's design as the best point of reference. |
400 !!! damn , i complained cause i used 600, use 1000 !!.. about the pics let me see what i can do.
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i went to home depot and the highest they had was 400!! let me know where you can find 1000 grit online
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DOF, lenses, etc...
I really want to build an Agus35 but before I do I want to get my info right, so please bear with me on this one.
Does the .7x wide angle converter (Century Optics) or the Achromatic Diopters (Century Optics) create depth of field to be used with the Agus35? I'm not to keen about the physics of light and the lenses you guys are using. What lenses do you guys recommend to a novice like myself who doesn't know much about SLR lenses? I want to do some close up work, like with the achromatic diopter mentioned above. What lenses would you guys recommend? Is a eBay a good source to find these things? What about Ritz, or B&H Photo Video, etc.? The interchangeability of lenses have been adressed before and I wanted to know all lenses were compatible with the F to C mount adapter mentioned in a post earlier. Thanks for your guys' help!! :] |
i found some 1500 grit online. should i get that?
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Really Fine Sandpaper
You can find "Sanding Films" where they sell plastic models. They are made by Testors and the finest is REALLY fine. I used the next finest to start with then used the finest to finish. I started my adapter last nite and I will post some pics as it progresses.
Tom |
do you have a link to the product?
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Randy,
I had the same confusion with the wide angle adapters, but they are saying you need to get one that is wide angle and macro so that you can use the macro part, not the wide angle part. Go to ebay and type "wide angle macro ??mm", with the ?? being your thread size needed. That's where I got mine, and it was only $32. As for the SLR lens, get the best one you can. I would try to find a 50mm f1.8. The 50mm is the closest to what the eye sees. Remember, you want the best lens possible! Good Luck... Clay |
if you had a 50mm slr lense then you would want a wide angle macro 50mm?
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nvm, i found a wide and macro lense where the front lense detaches and then it becomes a macro lense! perfect for this right? and also, i bought some fresnel lense. would that help the vigenetting and stuff if i put it between of the macro lense(connected to camera lense) ang the ground glass?
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Danny,
The macro is for the video camera. You don't need the wide angle part. Here: Camera - macro - spinning cd - fresnel - SLR lens That's the order. If you are confused about mm, look at your video camera lens and there will be a number (37 for mine) with a circle and a line through it next to the number. This is the thread size for filters, extensions, wide angle and macro lenses to be added to the video camera. Hope that helps... Clay |
ok i get it now. so the wide angle macro lense with the detachable wide angle lense will work then right?
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Any cheap macro filters for the gl2?
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yea probably. agus used a magnifying glass in his original one i think
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The gl2 shouldn't need a macro lens at all. It can focus on things all the way up to the lens itself.
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ok so can some1 confirm that the GL1/GL2 doesn't need the macro lense? i dont wanna waste $40
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At the risk of repeating information in the same thread, the GL1/2 can only focus in macro mode when completely zoomed out, which means the projected image will definitely not be filling the frame.
So yes, it can focus that close, but not in any way useful to what you're doing here. It will still need the lens. |
Some pics of my adapter....
I call it the Agus35 Mark III.
http://www.sillydaddy.com/Agus35_MarkIII.html I Haven't shot any video with it yet, I need to close the sides and build a way to mount it to my video camera and maybe paint it. I'm thinking a bellows would look really cool and make it look like a professional piece of equipment. Also a cover over the motor and battery would help make it look nicer. A few of notes, I used the bolts so I could adjust the distance from the lens to the GG. The double nuts are tightend agains each other but not tight toward the front. This lets the bolt spin. I used Blind Nuts/T-Nuts on the back. I cut the barbs off and smoothed them down. I then put them through the back and used some hot glue to hold them. Once I got the distance right, I put nuts on the part of the bolts that protruded from the back and tightened them to hold it all in place. The cost so far.... $1.50 for the 1/8" hardboard $3.00 for the bolts, nuts and washers $0 for the CD motor and spindle, The player was broken ($12.00 for a new player) $0 for the GG, It was lying around in an empty CD spindle. $2.50 for Battery Holder |
Have anyone even tried to put the fresnel before the GG ? i havent have any success, so i put it after it using a magnifying lens.
Ok, here are some new pics of the adapter. http://altoque.tv/35mmAdapter/adapter01.jpg http://altoque.tv/35mmAdapter/adapter02.jpg http://altoque.tv/35mmAdapter/adapter03.jpg http://altoque.tv/35mmAdapter/adapter04.jpg http://altoque.tv/35mmAdapter/adapter05.jpg http://altoque.tv/35mmAdapter/adapter06.jpg http://altoque.tv/35mmAdapter/adapter07.jpg http://altoque.tv/35mmAdapter/adapter08.jpg http://altoque.tv/35mmAdapter/adapter09.jpg http://altoque.tv/35mmAdapter/adapter13.jpg BTW... tom, let me tell you that you need to close that box, or the outside light will ruin the image, you need to make a camera obscura, and all the GG have to be covered... (no peeking !) |
If using a GL2 I think a macro lens or fresnel lens will necessary because I put my frosted cd right up to the lens, and it doesn't completley fill it as you can either see the center piece of the cd or the outer edge. Anyone got any links to a macro filter for the GL2 please?
How about these? Amazon Porters Camera Store |
Agus,
Two questions: How did you attach your GG to the spindle? That's an awfully large hole to close... How did you keep it perfectly parallel to the lenses? I'm redesigning mine. Pics up shortly. - jim |
I've just dismantled an old cd player and taken out the motor, but my queston is where do i put the wires??? i cant seem to get it to run
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Noah,
Cut the positive and negative wires leading to the motor (red and black) and make sure you leave the wires long enough. Then, you need to connect them to a switch or directly to a battery pack (both can be purchased at Radio Shack). The battery pack will also have red and black wires, connect those together. For the switch, connect the two red wires to the switch, then the black ones together (I think). They also have a switch that allows for connecting the negatives to it. Hope that explains it. Clay |
Almost got the full package now. Got some fresnel lenses this morning. Can't wait to give this bad boy a try.
Anyone know if its safe to run a CD motor from a 9v battery? And is the fresnel lens purpose to increase the image size that is projected onto the cd? Thanks |
the cd motor runs to fast in my opinion with 2 AAA batteries which is like 3 volts... so to answer your question on the 9 volt battery, its a negative. 1 triple A would probably the best case but not the easiest to pull off... 2 AAA is probably worth settling for
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Thanks.
I'm still having a problem finding a macro adapter that will work with the GL2. Been looking all morning with no luck. Any recommend any? |
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