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Gerret Warner
35mm adapter
on Nov 15, 2009 at 8:41:36 pm

I'm looking to rent a 35mm adapter for my HVX200. A friend said he used a Letus adapter, but so far I've come across a rental only for a P+K. Has anyone had experience with either. I'm hoping to find one that has minimal light loss, like a half stop and that I can put together with the camera without a rental house technician. Any help would be appreciated.


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Noah Kadner
Re: 35mm adapter
on Nov 15, 2009 at 9:28:36 pm

It depends on the rig but I've yet to see one that doesn't lose at least a stop- that's just the nature of the optics on those things. I think the Letus is about the easiest to assemble. It's not exactly bolt on and go but it's definitely not something you need to be at a camera house to learn.

Noah

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Jeremy Garchow
Re: 35mm adapter
on Nov 16, 2009 at 9:28:37 pm

P+K, you mean P+S Technik?

Super nice, no image flip and the images are great. I would take your camera in to the rental house and have them put it on, though.

Jeremy



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Gerret Warner
Re: 35mm adapter
on Nov 17, 2009 at 2:25:19 am

Thanks, both.

Yes, Jeremy, I meant the P+S Technik, which seems to be the best of the lot. But the rental house in Dallas where I'll be shooting has the Letus, says it's a half-stop of loss, is user mountable, and the price is right, so looks like what I'll try.

Thanks again for the advice.

Gerret


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Jeff Regan
Re: 35mm adapter
on Nov 17, 2009 at 2:36:25 am

I own two Letus Ultimate 35mm adapters as well as the Letus B4 Pro 2/3" relay lens. I use the adapters on our HPX170, EX1 and HPX2700 and many other cameras belonging to clients. I have found that they are very sharp edge to edge, comparing favorably to the P+S Pro35.

I would say that light loss is closer to a full stop. If possible, it is best to have the rental house build the rig for you, do the back focus, and if using a 2/3" camera and relay lens, a white shading file needs to be done for the Letus system(as you would with a Pro35).

Jeff Regan
Shooting Star Video
http://www.ssv.com

Jeff Regan
Shooting Star Video
http://www.ssv.com


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Gerret Warner
Re: 35mm adapter
on Nov 17, 2009 at 2:51:31 am

Thanks, Jeff. Yes, other friends have told me it's closer to a stop than a half stop, in spite of the specs and the rental house claims.

And thanks for the tip about helping building the rig. No need for white shading on a 1/3" CCD?


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Jeff Regan
Re: 35mm adapter
on Nov 17, 2009 at 3:00:05 am

Haven't noticed white shading errors with 1/3" cameras as much as 2/3". Even if an issue, I don't know of any 1/3" cameras that offer manual or auto white shading anyway.

Make sure you run the ground glass speed at max, 99, if an Ultimate.
Don't use shutter speeds above 1/500th. Be very careful about dust on the various elements, including between the achromat and the adapter rear element.

Jeff Regan
Shooting Star Video
http://www.ssv.com

Jeff Regan
Shooting Star Video
http://www.ssv.com


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Gerret Warner
Re: 35mm adapter
on Nov 17, 2009 at 12:38:37 pm

Thanks, Jeff. Very helpful details.

Gerret


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