Canon 7D problem even with slow PAN’s (so it’s not rolling shutter?)

[Michael Locke]

Hello Osku,
Since panning is a physical movement of he camera, one must ask how you moved it. The footage suggests the physical is the problem (uneven side-to-side speed). “Blinking” I think of as a change in light/appearance intensity, so I’m not sure what you mean there. The picture integrity seems fine, but I got this effect trying to pan a landscape by twisting clockwise on a monopod with no fluid head (not so good). The smoothe-cam filter in Final Cut works pretty good for single-axis (horizontal) variation; anything more complicated (bumpy car ride) https://library.creativecow.net/anderson_iain/Coremelt_Lock-and-Load-Express/1 looks good. Hope this helps…ML

[Adam Duplay]

Did you have the lens image stabilizer switched on? That should be off when shooting from a tripod.

Adam Duplay

[Bob Dix]

The 5D similar to the 7D records at about 38.5Mbps , make sure your CF card is UDMA and about 45Mbps, we use Sandisk Extreme 4 or 60Mbps , it may help ?

Freelance Imaging & Video
AUSTRALIA

[Osku Petteri]

Thanks for quick answers!

Lenses used:

Tokina 11-16 2.8 no image stabilizer
Sigma 17-50 2.8 no image stabilizer

Yes saying it’s blinking is not the right term but the problem is real and I don’t know the term if it’s not rolling shutter related.

Smooth Cam in FCP won’t help here. Or in Motion.

Other succestions?

[Osku Petteri]

Card used Sandisk Extreme 3 32gigs, the bitrate should be enough.

[Bob Dix]

That is slower than the camera. Ultra does not cut it ?

Freelance Imaging & Video
AUSTRALIA

[Al Bergstein]

can you do some tests of similar situations at various shutter speeds? It would have been helpful to see if you could reproduce this same thing at 30fps and higher. I try to shoot at 30 fps or higher when I anticipate more camera movement.
What kind of mount were you on?
Was the mount moving totally fluidly?

Alf

[Todd Terry]

[Alf Hanna] “do some tests of similar situations at various shutter speeds… see if you could reproduce this same thing at 30fps and higher.”

That’s a little confusing. “30fps” is a frame rate, not a shutter speed. Frame rates and shutter speeds are two entirely different things.

T2

__________________________________
Todd Terry
Creative Director
Fantastic Plastic Entertainment, Inc.
fantasticplastic.com

[Al Bergstein]

message deleted…

[Al Bergstein]

From Wikip. This gets at what I think I’m trying to say here..am I wrong in this? Trying 30 fps might be smoother than 24?

“Judder is a real problem in this day where 46 and 52-inch (1,300 mm) television sets have become the norm. The amount an object moves between frames physically on screen is now of such a magnitude that objects and backgrounds can no longer be classed as “clear”. Letters cannot be read and looking at vertical objects like trees and lamp posts while the camera is panning sideways have even been known to cause headaches. The actual amount of motion blur needed to make 24 frames per second smooth eliminates every remnant of detail from the frames. Where adding the right amount of motion blur eliminates the uncomfortable side effects, it is more than often simply not done. It requires extra processing to turn the extra frames of a 120 frame/s source (which is the current recording “standard”[citation needed]) into adequate motion blur for a 24 frame/s target. It would also potentially remove the detail and clarity of background advertising. Today, devices are up to the task of displaying 60 frames per second, using them all on the source media is very much possible. For example, the amount of data that can be stored on blu-ray and the processing power to decode it is more than adequate. Though the extra frames when not filtered correctly, can produce a somewhat video-esque quality to the whole, the improvement to motion heavy sequences is undeniable. Televisions these days often have an option to do some kind of frame interpolation (what would be a frame between 2 real frames gets calculated to some degree), where for frames that are almost identical this can give some manner of improvement in judder, it comes nowhere close to a source having a higher number of frames, it is merely a trick to compensate for sources not having a high enough FPS rate. This interpolation creates artifacts on screen that are clearly noticeable also.”

Alf