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Experience with DOF adapter on Super8?


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#1 fabian gebbert

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Posted 13 October 2009 - 04:13 AM

Hey folks,

does any of you have some experience with a DOF Adapter on Super8
Like this here: http://www.twoneil.com/

I am looking also for an guide or possibilities to build one.


Thank you very much!
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#2 Matthew Oaten

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Posted 13 October 2009 - 04:34 AM

Hey folks,

does any of you have some experience with a DOF Adapter on Super8
Like this here: http://www.twoneil.com/

I am looking also for an guide or possibilities to build one.


Thank you very much!


Hi,

I built an adapter similar to that, using details and the ground glass from this guy - http://www.jetsetmodels.info/ for the small hdv camera's I have at work. (examples at
View on Vimeo and
View on Vimeo)

I got it working fairly well, but honestly, since I got it working, I haven't used it at all. It was a bit of an obsession for a while, and fun to make, but now I find no real need for it. As far as making things look more cinematic, I feel this has more to do with dynamic range than depth of field - something that shouldn't be problematic with well exposed super 8.

When I do want a shallower depth of field, (both with video, and super 8) I tend to pull the camera back a few metres and zoom in. Obviously, depending on your needs, this might not be an option for you to achieve your desired DoF, and i'm not sure about adapters for super 8 cams, but if you're going the DIY route, be prepared for at least 2/3 stops of light loss.

Matt Oaten
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#3 fabian gebbert

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Posted 13 October 2009 - 04:52 AM

Hey Matt,

thank you for the answer. i found that vid on youtube from a guy that used a dof adapter:http://www.youtube.com/watch?v=bH3ctZBcqjI

but since i got a nizo 6080 connecting one looks hard and if i would need some rails to hold a large adapter.

but i have seen several videos with 35mm adapter experimentes an the pictures had some nice "artistic" touch. i liked that :)

but maybe zooming in would do it as well in certain circumstances.
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#4 Matthew Oaten

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Posted 13 October 2009 - 05:02 AM

thank you for the answer. i found that vid on youtube from a guy that used a dof adapter:http://www.youtube.com/watch?v=bH3ctZBcqjI


Impressed! Nice results actually.... maybe it is worth a pop after all....
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#5 fabian gebbert

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Posted 13 October 2009 - 05:11 AM

Impressed! Nice results actually.... maybe it is worth a pop after all....



hm, maybe i will test this thing next month. but only in daylight with an bigger asa filmspeed. but first i have to figure out how to connect it to the nizo 6080 lens with converters...
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#6 John Young

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Posted 30 October 2009 - 07:53 AM

hm, maybe i will test this thing next month. but only in daylight with an bigger asa filmspeed. but first i have to figure out how to connect it to the nizo 6080 lens with converters...



Why?

Why would anyone do this?

Only to use 35mm lens?

I have seen some great footage from cameras that use the built in lenses. DoF should be achievable with ANY film camera that has an iris and adjustable focus.
No?
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#7 Richard Tuohy

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Posted 30 October 2009 - 06:54 PM

Why?

Why would anyone do this?

Only to use 35mm lens?

I have seen some great footage from cameras that use the built in lenses. DoF should be achievable with ANY film camera that has an iris and adjustable focus.
No?

What you say is true John, but it misses one important point. Yes, for any given combination of lens and image size (ie the size of the captured image projected by the lens - the size of the film or chip) the smaller the aperture, the greater the depth of field and vice versa. But image size is a major factor in depth of field: change the image size (by framing up the same shot on larger or smaller format camera for example) and the depth of field will change. The smaller the image size, the greater the depth of field and vice versa. Super 8 has an inherently greater (massively greater) depth of field than say 35mm film. yes, depth of field can still be exploited in super 8, but not nearly in the same way as with larger formats. If you took a 35mm camera and a super 8 camera and selected lenses for each such that you had the same perspective and framing on the same subject and were using the same aperture on both, the difference between the depth of field of both would be quite marked. So the idea with a dof adapter is that you get access to the dof characteristics of a larger image size (ie format size) than the camera you are using would naturally have.

richard
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