Canon 24-70mm not constant 2.8?

[Stephen Williams]

If you stop down to T4 does the same problem happen? Most 2/3" ENG lenses suffer wide open. Motion picture lenses cost a lot of money, this is one of the issues they have sort out.

[Roberto Lequeux]

That comparison I posted was at f/3.5 which is probably around T4.

[Stephen Williams]

That comparison I posted was at f/3.5 which is probably around T4.

Try 1 stop down from wide open, I would expect it to be fine.

[Kim Frank]

Well the lense has a F 2.8.
The video I shot was at a 5.6
and the shift was there.
But I'll give it another shot

[Michael Hastings]

These are 20% horizontal but full vertical crops with the same region roughly in the same area of the image circle. Same distance and lighting of course. RGB measurements from the PS eyedropper tool.

What do those numbers translate to in F stops?

[Jannard]

That's just one of the reasons you pay more for a cine zoom.

Jim

[Matthew Duclos]

That's just one of the reasons you pay more for a cine zoom.

Jim

EXACTLY!!!!
Thank you Jim.

[Kim Frank]

What would be a full frame cine zoom with a T3 and how much would it cost.
I'd say correcting half a stop difference in post is more in my budget range.

[Scott Crawley]

He said that this would have to do with the film modus of the 5DII.

I presume he was referring to the shooting mode and/or metering mode.

[Kim Frank]

Don't know if I understand?
Always talking manual settings.
No auto metering. But he was wrong.
It's a lens issue, not camera or shooting mode