35mm Adapter Static Aldu35

Martin Lindstedt · August 24th, 2004, 02:21 AM

after further experimenting, I found that it was the other side of my condenser that was causing it .. any bright light would make the smallest particle visible, or fingerprint

I'm going to try rearrange my two condenser lenses like this
(the second condenser is the one with the GG .. )

SLR Lens - [)(] - Camera

That way, no dirt or fingerprint will shine up like it did in my other arrangement below ..

SLR Lens - (][) - Camera

Am I missing something? When trying that new arrangement, I can't see any optical distortion, so I guess it's working .. ?

Eric Ohman · August 24th, 2004, 02:27 AM

tja martin!

just wanted to let you know that i've ordered 2 pcx-lenses, a fresnel lens and a GG in plastic. i will let you know how the fresnel is.. and if the GG is any good. i can't wait til i get these stuff. i hope the fresnel lens is good. that's the lens they use on real GG to get rid of vignetting (you know the guy on voodoofilm who shot through his F4, that viewfinder was a GG with fresnel-lenses on both sides).

i'll let you know later this week.
but hey... hows the GG's coming? you don't feel scanning a GG in high res, like 1000x1000 or something? would be great.

---------
your condenser lens experimentation... why would fingerprints be more visible the way you had it before?

TO EVERYBODY-
is there any software wich will show you how light goes through lenses... that way we could see the difference in (| |) and |) |( must be some software out there... where you're able to see the "light curve"

Martin Lindstedt · August 24th, 2004, 02:18 PM

heey eric!

Sounds great! Keep me posted on your progress with the plastic GG ..

My GG is doing great! .. As I said before, I've been grinding one of my condensers, and now after 4 hours + of grinding, I don't think it'll get any better.

Today I tried my theory .. I flipped the condenser, and yes, those irritating bright dots disappeared, BUT .. instead I got some wonderful vignetting .. ! jippi! .. I should have foreseen this .. : /

So, when undoing everything I just, the backlid of my Canon FD lens poped out along with springs and other delicate stuff .. i must be cursed, or something ..

So, back to the first issue .. I guess I'll need some ND filters, and really watch the lighting when shooting, cause there is no way in *beep* I can keep the back of my condenser that clean .. how are guys dealing with this? ..

Brett Erskine · August 24th, 2004, 03:34 PM

Mount your condensers in filter rings, clean them perfectly then sandwich them bewteen two Skylight filters.

Make sure the gap between skylight filters and the GG is far enough to put any dust they get on them way out of focus.

2nd option: Make a vibrating adapter.

Eric Ohman · August 24th, 2004, 05:02 PM

- Martin

Did you grind a condenser lens on the flat side!?!

Martin Lindstedt · August 25th, 2004, 01:36 AM

yes, eric, I sure did! :)

anyway, here is a picture of what I am dealing with !

http://www.martin.incmplete.com/mini35/dirt2.bmp

and ..

http://www.martin.incmplete.com/mini35/dirt4.bmp

now, it's really, really hard to see these things in a picture , but look at the bright spotlight to the right .. around it, there are small white particles ..

Actually , Brett .. I am considering building me a oscillating adapter .. I was thinking about making it squareish, with 4 shafts and one motor .. don't know if it'll work, though ..

Brett Erskine · August 26th, 2004, 05:05 AM

"Actually , Brett .. I am considering building me a oscillating adapter .. I was thinking about making it squareish, with 4 shafts and one motor .. don't know if it'll work, though .. "

Yeah that will work...at least it worked with mine.

-Brett Erskine

Eric Ohman · August 26th, 2004, 06:45 AM

<<<-- Originally posted by Brett Erskine : Yeah that will work...at least it worked with mine.

-Brett Erskine -->>>

Hey Brett... do you have any pictures of the rig and result? I definately want to see it.

And Frank Ladner..where are you?
Hows the microcrystalline wax coming?

Frank Ladner · August 26th, 2004, 07:53 AM

Eric: Hey! I still read the forums almost daily, but I haven't had time to work on the adapter at home due to side-jobs. You know how that goes. I haven't given up on the project, though.

Brett Erskine · August 26th, 2004, 05:22 PM

Im in the same boat as Frank. I'll post it when its all done and well tested.

John Gaspain · August 29th, 2004, 03:12 AM

LOL, I leave for 6 months from the site and I see you all are having the same issues. Not a whole lot of forward movement in the last 800 posts. Oh well...have fun building!

Les Dit · August 29th, 2004, 10:34 AM

John, I posted some examples of mine device working at HD resolution. Still not perfect, but there is no grain.
I don't need the artsy-fartsy grain effect.
Email me if you would like a link to the 25 megabyte full res test clip, it's only a few seconds long.
-Les

<<<-- Originally posted by John Gaspain : LOL, I leave for 6 months from the site and I see you all are having the same issues. Not a whole lot of forward movement in the last 800 posts. Oh well...have fun building! -->>>

Eric Ohman · August 29th, 2004, 12:35 PM

i want to see it!
mail to: eric-ohmanATtelia.com

i can host it too if you want... i have 300mb.

John Gaspain · August 29th, 2004, 01:15 PM

<<<-- Originally posted by Les Dit : John, I posted some examples of mine device working at HD resolution. Still not perfect, but there is no grain.
I don't need the artsy-fartsy grain effect.
Email me if you would like a link to the 25 megabyte full res test clip, it's only a few seconds long.
-Les

<<<-- Originally posted by John Gaspain : LOL, I leave for 6 months from the site and I see you all are having the same issues. Not a whole lot of forward movement in the last 800 posts. Oh well...have fun building! -->>> -->>>

cool! I'll search your name for posts to see what you did.

thx

Ray Zschau · August 30th, 2004, 04:06 AM

Les,

Could you send me a link to your footage? I'm at raeshao@comcast DOT net. Thanks a lot!

August 29th, 2004, 03:12 AM	#1076
John Gaspain Major Player Join Date: Oct 2003 Location: WA-USA Posts: 371	LOL, I leave for 6 months from the site and I see you all are having the same issues. Not a whole lot of forward movement in the last 800 posts. Oh well...have fun building! __________________ The glory of the World passes by.

August 29th, 2004, 01:15 PM	#1079
John Gaspain Major Player Join Date: Oct 2003 Location: WA-USA Posts: 371	<<<-- Originally posted by Les Dit : John, I posted some examples of mine device working at HD resolution. Still not perfect, but there is no grain. I don't need the artsy-fartsy grain effect. Email me if you would like a link to the 25 megabyte full res test clip, it's only a few seconds long. -Les <<<-- Originally posted by John Gaspain : LOL, I leave for 6 months from the site and I see you all are having the same issues. Not a whole lot of forward movement in the last 800 posts. Oh well...have fun building! -->>> -->>> cool! I'll search your name for posts to see what you did. thx __________________ The glory of the World passes by.

August 24th, 2004, 02:21 AM	#1066
Martin Lindstedt Regular Crew Join Date: Jul 2004 Location: Malmö, Sweden Posts: 25	after further experimenting, I found that it was the other side of my condenser that was causing it .. any bright light would make the smallest particle visible, or fingerprint I'm going to try rearrange my two condenser lenses like this (the second condenser is the one with the GG .. ) SLR Lens - [)(] - Camera That way, no dirt or fingerprint will shine up like it did in my other arrangement below .. SLR Lens - (][) - Camera Am I missing something? When trying that new arrangement, I can't see any optical distortion, so I guess it's working .. ?

August 24th, 2004, 02:27 AM	#1067
Eric Ohman New Boot Join Date: Nov 2002 Location: Skellefteå, Västerbotten, Sverige (Sweden) Posts: 23	tja martin! just wanted to let you know that i've ordered 2 pcx-lenses, a fresnel lens and a GG in plastic. i will let you know how the fresnel is.. and if the GG is any good. i can't wait til i get these stuff. i hope the fresnel lens is good. that's the lens they use on real GG to get rid of vignetting (you know the guy on voodoofilm who shot through his F4, that viewfinder was a GG with fresnel-lenses on both sides). i'll let you know later this week. but hey... hows the GG's coming? you don't feel scanning a GG in high res, like 1000x1000 or something? would be great. --------- your condenser lens experimentation... why would fingerprints be more visible the way you had it before? TO EVERYBODY- is there any software wich will show you how light goes through lenses... that way we could see the difference in (\| \|) and \|) \|( must be some software out there... where you're able to see the "light curve"

August 24th, 2004, 02:18 PM	#1068
Martin Lindstedt Regular Crew Join Date: Jul 2004 Location: Malmö, Sweden Posts: 25	heey eric! Sounds great! Keep me posted on your progress with the plastic GG .. My GG is doing great! .. As I said before, I've been grinding one of my condensers, and now after 4 hours + of grinding, I don't think it'll get any better. Today I tried my theory .. I flipped the condenser, and yes, those irritating bright dots disappeared, BUT .. instead I got some wonderful vignetting .. ! jippi! .. I should have foreseen this .. : / So, when undoing everything I just, the backlid of my Canon FD lens poped out along with springs and other delicate stuff .. i must be cursed, or something .. So, back to the first issue .. I guess I'll need some ND filters, and really watch the lighting when shooting, cause there is no way in beep I can keep the back of my condenser that clean .. how are guys dealing with this? ..

August 24th, 2004, 03:34 PM	#1069
Brett Erskine Major Player Join Date: Dec 2003 Location: Anaheim, CA Posts: 445	Mount your condensers in filter rings, clean them perfectly then sandwich them bewteen two Skylight filters. Make sure the gap between skylight filters and the GG is far enough to put any dust they get on them way out of focus. 2nd option: Make a vibrating adapter.

August 24th, 2004, 05:02 PM	#1070
Eric Ohman New Boot Join Date: Nov 2002 Location: Skellefteå, Västerbotten, Sverige (Sweden) Posts: 23	- Martin Did you grind a condenser lens on the flat side!?!

August 25th, 2004, 01:36 AM	#1071
Martin Lindstedt Regular Crew Join Date: Jul 2004 Location: Malmö, Sweden Posts: 25	yes, eric, I sure did! :) anyway, here is a picture of what I am dealing with ! http://www.martin.incmplete.com/mini35/dirt2.bmp and .. http://www.martin.incmplete.com/mini35/dirt4.bmp now, it's really, really hard to see these things in a picture , but look at the bright spotlight to the right .. around it, there are small white particles .. Actually , Brett .. I am considering building me a oscillating adapter .. I was thinking about making it squareish, with 4 shafts and one motor .. don't know if it'll work, though ..

August 26th, 2004, 05:05 AM	#1072
Brett Erskine Major Player Join Date: Dec 2003 Location: Anaheim, CA Posts: 445	"Actually , Brett .. I am considering building me a oscillating adapter .. I was thinking about making it squareish, with 4 shafts and one motor .. don't know if it'll work, though .. " Yeah that will work...at least it worked with mine. -Brett Erskine

August 26th, 2004, 06:45 AM	#1073
Eric Ohman New Boot Join Date: Nov 2002 Location: Skellefteå, Västerbotten, Sverige (Sweden) Posts: 23	<<<-- Originally posted by Brett Erskine : Yeah that will work...at least it worked with mine. -Brett Erskine -->>> Hey Brett... do you have any pictures of the rig and result? I definately want to see it. And Frank Ladner..where are you? Hows the microcrystalline wax coming?

August 26th, 2004, 07:53 AM	#1074
Frank Ladner Major Player Join Date: Aug 2003 Location: Poplarville, MS Posts: 453	Eric: Hey! I still read the forums almost daily, but I haven't had time to work on the adapter at home due to side-jobs. You know how that goes. I haven't given up on the project, though.

August 26th, 2004, 05:22 PM	#1075
Brett Erskine Major Player Join Date: Dec 2003 Location: Anaheim, CA Posts: 445	Im in the same boat as Frank. I'll post it when its all done and well tested.

August 29th, 2004, 10:34 AM	#1077
Les Dit Major Player Join Date: Oct 2003 Location: Southern Cal-ee-for-Ni-ya Posts: 608	John, I posted some examples of mine device working at HD resolution. Still not perfect, but there is no grain. I don't need the artsy-fartsy grain effect. Email me if you would like a link to the 25 megabyte full res test clip, it's only a few seconds long. -Les <<<-- Originally posted by John Gaspain : LOL, I leave for 6 months from the site and I see you all are having the same issues. Not a whole lot of forward movement in the last 800 posts. Oh well...have fun building! -->>>

August 29th, 2004, 12:35 PM	#1078
Eric Ohman New Boot Join Date: Nov 2002 Location: Skellefteå, Västerbotten, Sverige (Sweden) Posts: 23	i want to see it! mail to: eric-ohmanATtelia.com i can host it too if you want... i have 300mb.

August 30th, 2004, 04:06 AM	#1080
Ray Zschau New Boot Join Date: Apr 2004 Posts: 6	Les, Could you send me a link to your footage? I'm at raeshao@comcast DOT net. Thanks a lot!