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Old December 21st, 2003, 03:48 PM   #496
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>>>>>>>Don what do you think about a commercial version ? is flipping the image critical ?

Absolutely! Anything less is a compromise. You want as few compromises as possible. You have to define who your target market is... hopefully you set your sights higher than just the people who only want to spend $60.

- don
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Old December 21st, 2003, 03:51 PM   #497
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I think, and I could be the minority but I wouldn't think I am... if it is a loss of quality or light steps flipping the image is not needed if you could somehow see the image right side up while you are shooting (ie flipped on a monitor or lcd).

I would rather that then lose quality.
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Old December 21st, 2003, 03:52 PM   #498
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Are you using a fresnel lens or macro between your GG and the camera Agus?
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Old December 21st, 2003, 04:01 PM   #499
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Yeah, a magnifying glass actually it is very powerfull i took it off froma wide conversion lens (VCL-0630 S)
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Old December 21st, 2003, 04:03 PM   #500
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Peter i still havent test using Glass, i am sure i will loose lest light with it than with a plastic cd, also the pentaprism or dove prism should be high quality to work...
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Old December 21st, 2003, 04:29 PM   #501
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I've got a B+W +10 diopter on order for my GL2. Can't wait to test it out.
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Old December 21st, 2003, 04:57 PM   #502
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I have figured out a static (no moving parts) solution. The test is very promising. I'm still waiting for parts to complete the whole thing. Once complete, I'll have an adapter which:

1. produce upright image
2. smaller (6x10 cm)
3. higher image quality and brighter.

The downside is that the complete cost to produce such adapter will cost a few hundred, might cost more depending on the quality of the coating and glass.

http://f2.pg.photos.yahoo.com/ph/lou....dnm=model.jpg
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Old December 21st, 2003, 05:22 PM   #503
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Vendi35 !!!

Sounds interesting. No moving parts though? How is the image plane resolved? Onto what?

Bring it on.

- don
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Old December 21st, 2003, 06:14 PM   #504
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inverting ideas

<<<-- Originally posted by Peter Sciretta : I think, and I could be the minority but I wouldn't think I am... if it is a loss of quality or light steps flipping the image is not needed if you could somehow see the image right side up while you are shooting (ie flipped on a monitor or lcd).

I would rather that then lose quality. -->>>

peter,
(and others, of course)

i think that there is a place where you can put a prism for inverting!
if the small prism (DOVE PRISM) is mounted as kind of EXPANDER of normal viewfinder (between your eye and a viewfinder) - you will NOT change a picture (quality) at all, you will se everything in a proper way - but you will of course need to flip recorded image after the shooting.
considering small monitor already with the cameras - i think that VERY simple device can be added to commercial version of agus35 - small mirror laying down on one side of "LCD chimney" - so if you are turning your camera monitor bit down - you will look at that mirror which turns everything upside down. so the image foer the viewer will be again proper one.
does this make a sense?
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Old December 21st, 2003, 06:30 PM   #505
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For people who don't use the viewfinder as much as a lcd or crt monitor this viewfinder idea is not good. If you're going to do any handheld work we'll need to see an lcd right side up.

As for the mirror LCD idea, I implimented this with my unit weeks ago... this still has the BIG problem that everything is still flipped horrizontally.
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Old December 21st, 2003, 07:02 PM   #506
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Vendible Book,
Sounds good ...what type of camera are you using??
Looking forward to pix
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Old December 21st, 2003, 07:38 PM   #507
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The limiting factor of the current method (mini35) is the requirement of moving the GG. P+S was able to create something fairly small because they probably machined the parts as small as possible. The sole purpose of the rotating/vibrating GG is to reduce the artifacts produced by the coarseness of the GG.

I have been testing a number of solutions, ground glass and other kind of materials to produce a diffusing surface that is very fine, so fine that it appears to be white to the camera. With such surface, you can project image on to it and there won't be any noticeable artifacts. The result is pretty close, but not yet there. I'll let you guys know how it goes.
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Old December 21st, 2003, 08:30 PM   #508
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<<<-- Originally posted by Peter Sciretta : As for the mirror LCD idea, I implimented this with my unit weeks ago... this still has the BIG problem that everything is still flipped horrizontally. -->>>


of course, peter - you are absolutelly right. i was too fast with that one.

mea culpa.

filip
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Old December 21st, 2003, 10:00 PM   #509
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This is a very rough test of the my static solution. I am still looking for method to improve the quality. Especially in terms of transmitting more light and to be able to "distribute" more light to the corners. Maybe a frensel lens would help.

http://f2.pg.briefcase.yahoo.com/bc/...=/35mm+adapter
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Old December 21st, 2003, 11:14 PM   #510
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Venible

If you use a screen that is diffuse enough, like the one i decribed to you, it should not need any fresnel, well from the tests i have read of it, it hasn't required one.

Zac
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