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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Back focus adjustment on Epic and Scarlet

Alexander Christ said:
The mounts don't have to be shimmed or adjusted the sensor itself is adjustable for back focus.
Click to expand...
Will any external accessory be needed for doing that?
Will the camera themselves be with that capability?
 
David (dudi) Namir said:
Will any external accessory be needed for doing that?
Will the camera themselves be with that capability?
Click to expand...

Apparently the sensor block has full 5 axis adjustment for alignment, back focus being the only user adjustable axis. May be adjusted through a menu item via a precision servo motor, but we don't know exactly yet how this will be done.
 
I believe that Jarred said that it would be adjustable via a screw. I could be recalling it totally wrong, but if so then one would be device such as the NULL Lens on to set the backfocus.
 
Mitch Gross said:
I believe that Jarred said that it would be adjustable via a screw. I could be recalling it totally wrong, but if so then one would be device such as the NULL Lens on to set the backfocus.
Click to expand...
These are important details that Red don't inform. Either they still don't know, don't want to be committed or simply don't think they are important.
I think they are important. As Mitch wrote if I need a device as the NULL I may get it now and use it for the Red One and if I don't, I may just "make" it without it till I will upgrade to the Epic.
 
I'm not sure one can ever adjust a camera's backfocus without some form of calibrated lens to judge the image sharpness through.

So David, if you are at all concerned about backfocus and having your mount properly calibrated I'd definitely invest in the NULL lens or one of the other backfocus adjustment options out there.

FWIW we bought the NULL lens and couldn't be happier with it. It's small, robust and dead simple to use. Has already paid for itself just in client satisfaction, having seen us using it to ensure that our cameras meet the STANDARD (and thus being able to convince the rental house to fix their lenses instead of the rental house blaming us for our camera being out of spec).

HTH

Paul
 
What plans Arri made with "Adjustable PL Mount" on designs for upcoming new digital cameras?

ArriDigital>>Forum:

Question by Scott Webster:

What is Arri's plans for setting FFD on the EV line? Adjustable or shim?

Answer by Marc Shipman-Mueller - ARRI Product Manager for Cameras & Lenses:

Shim. Works reliably and does not get you into trouble with centering on zoom lenses.

LINK>>>
 
The NULL Lens or similar optical device would be a sound investment. The upcoming DSMC cameras will have a multi-axis adjustable sensor block. Z-axis back focus adjustment is the only user-adjustable axis. It is adjustable mechanically / manually. And as Paul said, you still need some form of calibrated lens or optical system to aid in setting it. Such as a collimating tool, NULL lens, etc..

I suppose someone could use shims with the new DSMC mount system, however it's designed to work without. And it's also designed to make swapping mounts relatively quick and easy (just 4 bolts). Shims would become difficult to manage for someone who wishes to regularly shoot PL and Canon lenses on the same brain.
 
Optimator advantage

Optimator advantage

Don't forget- when you get the Optimator you'll have additional advantages:
1. Number to define max resolution
2. Chip centering reference
3. full chip coverage with hi res corner targets
4. Neutral munting system for use with Canon, Nikon, PL, Panavision mounts on camera.
5. Number of important upgrades to do color balance, single channel noise verify, MTF software and more coming to NAB.
 
Jim Jannard confirmed to me personally that the future RED cameras would work with the NULL Lens system with no issues. We designed this family of products to make sure that they performed well for you for a very long time.
 
Mitch Gross said:
Jim Jannard confirmed to me personally that the future RED cameras would work with the NULL Lens system with no issues. We designed this family of products to make sure that they performed well for you for a very long time.
Click to expand...

That is good news.
 
OptiTek said:
Don't forget- when you get the Optimator you'll have additional advantages:
1. Number to define max resolution
2. Chip centering reference
3. full chip coverage with hi res corner targets
4. Neutral munting system for use with Canon, Nikon, PL, Panavision mounts on camera.
5. Number of important upgrades to do color balance, single channel noise verify, MTF software and more coming to NAB.
Click to expand...

The Optimator supposed to be the best long term collimating system.
 
Mitch Gross said:
Says who? You?
Click to expand...

That will be my choice.
You pay a bit more but you get features you would need now and any time in a future something like it was already mentioned above:

1. Number to define max resolution
2. Chip centering reference
3. Full chip coverage with hi res corner targets
4. Neutral munting system for use with Canon, Nikon, PL, Panavision mounts on camera.
5. Number of important upgrades to do color balance, single channel noise verify, MTF software...

Pretty good and attractive instrument...isn't it?
 
second that

second that

Sanjin Jukic said:
That will be my choice.
You pay a bit more but you get features you would need now and any time in a future something like it was already mentioned above:

1. Number to define max resolution
2. Chip centering reference
3. Full chip coverage with hi res corner targets
4. Neutral munting system for use with Canon, Nikon, PL, Panavision mounts on camera.
5. Number of important upgrades to do color balance, single channel noise verify, MTF software...

Pretty good and attractive instrument...isn't it?
Click to expand...
For the record, I agree with you 100%
Thanks Sanjin
 
I've had a chance to play around with both the Optimator and the Null lens and the Optimator ( still the prototype ) looked like a much better thought out product to me, and worth the extra cost.

The Null lens requires you to find an "infinity" target and to mess with the shutter until you find a usable exposure. I can think of many situations where it would be a hassle finding a suitable target to check it with. IBE makes a target for those that want, but it runs up the cost considerably. It's well made and the price is OK.

The Optimator has a built in reticle and a light source - It will work quickly and easily anywhere. You can check FFD in seconds. It also has guides that will allow precise centering and alignment. Jaceck is also crazed about quality, the best is good enough.

Just my opinions and observations. No horse in the race.

Matt Uhry
www.mattuhry.com
 
Matt Uhry said:
The Optimator has a built in reticle and a light source - It will work quickly and easily anywhere. You can check FFD in seconds. It also has guides that will allow precise centering and alignment.

Matt Uhry
www.mattuhry.com
Click to expand...

I have just purchased a null lens from Abel Cine Tech, but have yet to try it out.

It would seem to me that if the null target does not already posses the ability to establish sensor alignment, a second generation target could easily be produced to do just that. If the null target had the same corner to corner resolution chart as the Optimator, they would essentially be the same product with different hairstyles.

A few questions immediately came to mind when watching the Optimator demo video.

1) Have those of you at OptiTek found it commonplace for Red One sensors to be poorly aligned or untrue? :001_huh:

2) Would a null lens (target or not) be unable to establish the same tell tale signs, such as uneven focus across the frame or a slightly off center image? :confused1:
 
my experience

my experience

I can't speak for other manufacturers but since the null lens can't "see" whole chip(does not have enough coverage) it won't give you the same info.
The RedOnes are generally well alligned with few exceptions I've seen so far, not unlike other cameras -still or motion.
Note that for 3D work it's essential to have the sensors alligned and focused.
There are about half a dozen other tests you could perform with the Optimator.
It's an expandable system.
 
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