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Depth of Field Adapter on Steroids

Started 8 months ago | Discussions thread
fferreres Veteran Member • Posts: 8,199
Re: Thanks Tom! Here's a direct link if that's alright.

Tons o Glass 0 Class wrote:

Thanks Tom; hopefully my explanation is sufficient to now post his video:

https://youtu.be/9cT0jXI7l4E

While I agree that as a mod you're not obligated to watch, I believe you and others here will enjoy it!

That's a lovely video. No wonder the person has so many followers. The idea of shooting with a lens with a big image circle is something that I've been looking forward for a long time. I had not noticed the idea of a double fresnel lens to get most all the light. That was a mayor roadblock. Of course, the resolution will be low but the larger the screen, the higher the resolution of the capture if the fresnel is high quality.

These very fast projector for large venues are ideal,as they'd give looks for impossibly fast lenses. Position closer to the camera and the DOF is useless. But position far away, and they are another thing.

Most large format lenses I have would not look as ultra fast lenses. For example, something 6.8 covering 8x10, say a 12" dagor 6.8 will look like 50mm f1.2, and these are usually shot at f11 to f64. An f4 with 8x10 is more interesting, if DOF is the thing, with a look of about f0.7.An f2.5 will look f0.44 and f2 like f0.35. But one needs a long FL. As I said, 300mm is a normal lens.

I really like this very simple camera. No movement, motorized, the idea of double fresnell and a housing to host the camera as well. This is likely viable even if eccentric, and could be made relatively lightweight. Can be a fun camera an equiv. f0.4 lens.

Thanks for sharing.

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