Back Focus Diascope

[Tim Zarraonandia]

Does anyone have any questions about the 52mm FFD Diascopes? Prices start at $2,495.00 and there are only a few more left on the shelves currently... For a small price more, a Diascope can be purchased with a Collimator which can be used for zoom lens tracking, to verify that the Diascope is properly set, and to verify lens footage marks.

http://www.uniqoptics.net/instruments.htm

Here's a picture of the a Diascope in use, and you can click here for a video of it in use.​

Old posts mentioning this product:
http://205.234.135.241/forum/showthread.php?t=37880
http://205.234.135.241/forum/showthread.php?t=13390&page=2
http://matthewduclos.wordpress.com/

 

[Guidofilippi]

Hi Tim,
I find the info a bit confusing... would be great if you could clarify it a bit.
To be used in a Red One camera, it looks like one needs Diascope + PL adapter + cable + ...?
Thanks,
Guido

 

[Tim Zarraonandia]

Hi Tim,
I find the info a bit confusing... would be great if you could clarify it a bit.
To be used in a Red One camera, it looks like one needs Diascope + PL adapter + cable + ...?
Thanks,
Guido

Guido,

Any Diascope purchase will come with 2 free power cords - one that powers directly from the Red One camera, and another that powers from AC. The Diascope can come by itself with these power cords, or in a kit which would include the Collimator, a case, and few extra power options (the PL adapter mentioned in the video from the link comes free with the collimator, it can be detached for a nikon adapter).

The instrument works by projecting a Siemens star target onto your 52mm Digital Camera monitor. Simply adjust the camera back focus until the target is at its sharpest. For more information on each of the models uniQoptics offers, see the link above.

 

[Mike McEntire]

Hey Guido I was just down there yesterday and got a demo on this gear. It is really easy to use. You mount the diascope like you would any lens on the PL mount of the camera. Then you power the diascope via the gpio port on the back of the camera or with their power adaptor. Plug in your monitor and use focus ring on the diascope to make the test pattern sharp. Then you look at the marks on the diascope to see if your backfocus is correct or not. If you are not lined up on the mark you loosen the back focus ring on your camera and turn it untill the test pattern is sharp and you are on the correct mark on the diascope. It took me about 3 minutes on my first try to get perfect back focus on my camera. I am going to get one of these for sure. The lens collimator is really easy to use too. Pretty awesome to start every shoot with all the cameras and lenses verified. Their lenses are really sweet too.
Awesome people who are way smarter then me.

 

[Fred Salaff]

The new Lumacheck from Luma tech has a built in collimator-microscope and led. No need for external power. Focusing is on the pixels.

Price: $1595 until end of year.

More info at www.lumacheck.com

 

[Steffen Vala]

The new Lumacheck from Luma tech has a built in collimator-microscope and led. No need for external power. Focusing is on the pixels.

Price: $1595 until end of year.

More info at www.lumacheck.com

Hi Fred,

There's not a whole lot more info at the website. Is there any more info about how the lumacheck works, what the user will be using to accurately measure the ffd, etc.

Thanks,
Steffen

 

[Mitch Gross]

The Lumacheck looks like an old Richter pocket collimator. There's an optic one looks through that focuses on the sensor surface. Is that correct Fred?

 

[Fred Salaff]

The optical characteristics of the old RICHTER collimator has been drastically improved upon and would rate closer to a professional microscope. We have shown the new Luma Check tool yesterday and today (and tomorrow) at the technical seminar and open house in Miami to great acclaim. The tool is very easy to use and takes all of ONE minute to learn how to use it on a RED camera.

One merely installs the tool onto any PL mounted RED camera, turns on the internally powered LED lights and adjusts the dioptar to one's eye and then focuses on the pixels. Adjustments in the lens mount can then be made accordingly.

 

[Mitch Gross]

Just to be clear, I was noting that it functions similar to the Richter. I have no idea as to the optical and mechanical performance of the tool.