35mm adapter with super 8?

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mattias
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35mm adapter with super 8?

Post by mattias »

i've been wanting to try out a "35mm adapter" in super 8 for some time, and i've found one that i could almost afford and that screws right into the filter thread of my canon 814e. could be cool, don't you think?

http://letus35com.temp.powweb.com/letus35.html

/matt
STREDGE
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Post by STREDGE »

I think that it would make more sense if you had a camera with changeable lenses. Or, if you already own a really really wide lense that you want to use with it. 35 lenses not on on 35 cameras are usually only used for DOF purpsoes and super 8 already has plenty of that. Not to mention it would make an already hard to focus format even harder to focus. Maybe you have something else in mind or some kind of effect you are going for, Im not sure. If you do it id be interested in seeing what it looked like of course! I just dont see the advantage to it
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Post by downix »

Charging more than they need to, but a cool idea. I've been making my own version of this, but instead of ground glass trying to refocus the image using lenses, much like a reverse tele-converter.
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Post by mattias »

STREDGE wrote:35 lenses not on on 35 cameras are usually only used for DOF purpsoes and super 8 already has plenty of that.
i think you got that backwards. what you need the adapter for is to get *less* dof, which is very hard with super 8 just as with video.

/matt
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Post by mattias »

downix wrote:I've been making my own version of this, but instead of ground glass trying to refocus the image using lenses, much like a reverse tele-converter.
that will alter the focal length and thus won't give you the 35mm dof or angle of view, which makes the adapter pretty useless. all such adapters use a ground glass.

/matt
downix
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Post by downix »

mattias wrote:
downix wrote:I've been making my own version of this, but instead of ground glass trying to refocus the image using lenses, much like a reverse tele-converter.
that will alter the focal length and thus won't give you the 35mm dof or angle of view, which makes the adapter pretty useless. all such adapters use a ground glass.

/matt
I know it will, the idea is to give maximum light while changing the focal length to best cover the S8 frame. Imagine putting a 50mm Nikon lens onto your S8 camera and getting the same angle of view as you would on 35mm.
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Post by mattias »

downix wrote:Imagine putting a 50mm Nikon lens onto your S8 camera and getting the same angle of view as you would on 35mm.
i'm not sure what you're trying to accomplish. why not just use a 12mm then?

/matt
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Post by Lunar07 »

I <b>believe</b> that downix is trying to use, say, a 50mm Nikon for 35slr, then REDUCE that image to make it fit on the S8 frame. Thus preserving the angle of view and the dof of the 50mm lens. The image is focused on some plane which is reduced (without cropping) and recorded on the S8 film plane.
I do not know much about 35mm adapters. But that is what I gathered from Downix post.
mattias wrote:
downix wrote:Imagine putting a 50mm Nikon lens onto your S8 camera and getting the same angle of view as you would on 35mm.
i'm not sure what you're trying to accomplish. why not just use a 12mm then?

/matt
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Post by downix »

mattias wrote:
downix wrote:Imagine putting a 50mm Nikon lens onto your S8 camera and getting the same angle of view as you would on 35mm.
i'm not sure what you're trying to accomplish. why not just use a 12mm then?

/matt
Because there's more, cheaper, 35mm glass out there.

And I did find that doing this improves the f-stop. Using the design I have would boost my F2 to F1.7.
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Post by downix »

Lunar07 wrote:I <b>believe</b> that downix is trying to use, say, a 50mm Nikon for 35slr, then REDUCE that image to make it fit on the S8 frame. Thus preserving the angle of view and the dof of the 50mm lens. The image is focused on some plane which is reduced (without cropping) and recorded on the S8 film plane.
I do not know much about 35mm adapters. But that is what I gathered from Downix post.
Yes, that's exactly the idea.
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Post by mattias »

Lunar07 wrote:I <b>believe</b> that downix is trying to use, say, a 50mm Nikon for 35slr, then REDUCE that image to make it fit on the S8 frame.
yes, i got that. i just didn't see why.
Because there's more, cheaper, 35mm glass out there.
i do now. ;-) however won't an optical adapter quite efficiently undo all benefits of the good quality glass and make it perform worse than a mediocre 12mm prime?

it's not what i wanted this thread to be about though. any input on using what's commonly referred to as a "35mm adapter", i.e. one that uses a groundglass to get the dof of 35mm? i've used them in video a few times so i know what they're about, but what would be the pros and cons when it comes to super 8?

/matt
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Post by downix »

mattias wrote:
Lunar07 wrote:I <b>believe</b> that downix is trying to use, say, a 50mm Nikon for 35slr, then REDUCE that image to make it fit on the S8 frame.
yes, i got that. i just didn't see why.
Because there's more, cheaper, 35mm glass out there.
i do now. ;-) however won't an optical adapter quite efficiently undo all benefits of the good quality glass and make it perform worse than a mediocre 12mm prime?
Depends on the adaptor. I've done testing with different optics, and gotten great results from a Celestron model

it's not what i wanted this thread to be about though. any input on using what's commonly referred to as a "35mm adapter", i.e. one that uses a groundglass to get the dof of 35mm? i've used them in video a few times so i know what they're about, but what would be the pros and cons when it comes to super 8?

/matt
Biggest con would be light loss. You're focusing on ground glass, you're going to loose light.
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Post by mattias »

one stop according to the website. the p+s technik adapter isn't much worse in my experience. i never saw that as a major problem. a bigger problem is that the image is upside down, and you can't fool the viewfinder with a magnet as you can in video. ;-)

/matt
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Re: 35mm adapter with super 8?

Post by aj »

mattias wrote:i've been wanting to try out a "35mm adapter" in super 8 for some time, and i've found one that i could almost afford and that screws right into the filter thread of my canon 814e. could be cool, don't you think?

http://letus35com.temp.powweb.com/letus35.html

/matt
Well, coincidently I had a conversation last saterday with a guy who is much into DV and who uses http://www.redrockmicro.com and also referred to this http://www.guerilla35.com He is a happy user of the first with his Nikon lenses.

I showed him my Nikon R10 and accesoiries as he wants to take up S8 filming :)
Kind regards,

André
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Post by tlatosmd »

mattias wrote: i've used them in video a few times so i know what they're about, but what would be the pros and cons when it comes to super 8?
A viewfinder that can be too tiny to focus with even at S8's native DOF?
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