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03/01/2013 12:53:57 AM · #26 |
Originally posted by Cory:
Ok, I've just picked up a few different sheets of glass - guess it's time for me to break out the 600grit diamond paste and get to work. :) |
Well... Now it's the 3000 grit. 1200 wasn't quite fine enough either. Sooo tired of grinding glass. *shrug* Totally worth it though, this thing is stupid fun.
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Thanks for all the comments! I'm super excited about this project.
And.. I think I'm safe for about 100 hours a year behind this lens. Well, ok 80, we'll subtract 20% for my exposure to my radioactive mineral collection.
Still, I should be ok... :)
This thing casts something like a 25" image circle - it's crazy.
Message edited by author 2013-03-01 00:54:39. |
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03/01/2013 12:55:15 AM · #27 |
| Impressive! Love the shot of Jason and Heather. |
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03/01/2013 08:44:05 AM · #28 |
I believe you can buy frosted glass at places that sell cut glass plate for windows.
Plexiglas would be a lot easier to work with if you want to frost your own. Automotive polishing compound might work for that. |
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03/01/2013 07:51:32 PM · #29 |
IS there any problem not solvable with Lego bricks?
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03/01/2013 07:53:04 PM · #30 |
| schlake... that lego setup is freakin awesome. Another tip to file in the memory banks. Thanks. |
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03/01/2013 08:01:13 PM · #31 |
| I started out thinking I'd use Technics to make a clamp. Then I realized I could just use basic bricks to make a stand. |
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03/01/2013 08:11:34 PM · #32 |
| I work with glass (a little bit)... is that leaning back/forward very far? Careful she don't snap! |
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03/01/2013 08:46:54 PM · #33 |
| It's pretty much perfectly vertical! I shot it at a weird angle, and it's inside a cardboard box. |
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03/02/2013 12:00:00 PM · #34 |
I can see where you could get impressive "tilt/shift" effects by shooting the projected image from oblique angles, and using wide aperture at the camera to make use of the shallow DOF.
Your new "box" camera is very cool stuff.
Re Cory's ground glass making experiment, if you have or know someone with an oscillating air sander, you could use that with super fine wet sandpaper to do the grind.
Some ground glass is etched by using hydrofluoric acid, if you have access to that. It's nasty stuff though. We used to use it for A/C coil cleaning but I don't know if it's still sold for that purpose.
Message edited by author 2013-03-02 12:04:53. |
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03/02/2013 01:10:46 PM · #35 |
Originally posted by MelonMusketeer:
I can see where you could get impressive "tilt/shift" effects by shooting the projected image from oblique angles, and using wide aperture at the camera to make use of the shallow DOF.
Your new "box" camera is very cool stuff.
Re Cory's ground glass making experiment, if you have or know someone with an oscillating air sander, you could use that with super fine wet sandpaper to do the grind.
Some ground glass is etched by using hydrofluoric acid, if you have access to that. It's nasty stuff though. We used to use it for A/C coil cleaning but I don't know if it's still sold for that purpose. |
I actually have HF, but I've heard that it gives inconsistent surfaces. Might try that at some point though for an "art" GG.
This thing is fun for sure - you can't imagine how thrilled I am that Schlake is letting us use his lens for this project! It's a beast, but amazingly beautiful. |
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03/04/2013 04:43:51 AM · #36 |
Excellent!
I can use it at night.. :)
Check out that DOF, and hey, we've got some reasonable resolution now! Love this setup.
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03/04/2013 09:30:05 AM · #37 |
If you need a bellows for it at some time, you can get a piece of black 14 or 16 inch A/C flex duct, slip off the black cover and take out the fiberglass insulation, then slide the cover back over the duct. Any A/C place should have some short pieces around that you could get for not much. They also have "duct collars" that you can use to reduce the size to fit the lens. Some hardware stores like Home Depot have the stuff too.
A pair of rails from an old chest of drawers may be a good way to make a focusing rail setup if you can find some long ones. Another option would be a pair of tubes that telescope into each other, like maybe a couple of legs from an old tripod.
It's almost time to go exploring and find some good places to shoot with it. The test shot looks good. |
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03/04/2013 01:08:40 PM · #38 |
You guys are tempting me. I still have this thing:
it's the one on the left. The one on the right is a Canon 50/1.4. The beast projects a beautiful image about 200mm behind the rear element. I don't know what te exact image circle size is, but it wouldn't be hard to determine. It would be fun to rig up a set-up similar to yours. I can imagine bulding in the capability to tilt the glass in one axis to get lens tilt functionality out of it. |
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03/05/2013 11:54:24 AM · #39 |
| Two things. I believe some of the glass elements in these lenses are slightly radioactive. You should be OK in normal handling, but you wouldn't want to keep it stuffed in your pants on a regular basis. (not that it would fit). Also, sometimes the elements will turn a funny brown tint, this can usually be removed by exposure to UV radiation. (finally a good use for that tanning bed) |
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03/05/2013 11:59:31 AM · #40 |
| Would also be cool to pair a lens like this with a scanner for a very high res scanning back camera... |
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