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-   -   Slow PAn look unnatural on Tv-Pc display screen (https://www.dvinfo.net/forum/photo-hd-video-d-slr-others/492343-slow-pan-look-unnatural-tv-pc-display-screen.html)

Marcus Martell February 27th, 2011 07:50 AM

Slow PAn look unnatural on Tv-Pc display screen
 
How come the pan shots from my D7000 look unnatural on the Tv screen?
Any suggestions

p.s: the pan are very slow and shot in A mode (aperture priority)

Eric Pascarelli February 27th, 2011 08:26 AM

Re: Slow PAn look unnatural on Tv-Pc display screen
 
Can you elaborate or post a sample?

My first guess is that it's something to do with your shutter time, which is left up to the camera when you are in aperture priority mode. It's best to control that yourself (manual mode) to achieve your desired look.

For the traditional "film look" your shutter should be 1/50 second or thereabouts at 24 fps. This gives the amount of motion blur we are accustomed to seeing from a film or HD camera. Anything much faster will start to look choppier, strobier.

Set your shutter to 1/50 (or whatever you want) in manual mode and then adjust exposure using ISO and f/stop.

Marcus Martell February 27th, 2011 12:06 PM

Re: Slow PAn look unnatural on Tv-Pc display screen
 
Sup Eric,
Thx for your help! So you suggest to use the M mode for video shooting?
Thank you mate

Eric Pascarelli February 27th, 2011 12:58 PM

Re: Slow PAn look unnatural on Tv-Pc display screen
 
Yes, it's one way to have control over the shutter speed with the D7000.

Marcus Martell April 16th, 2011 03:35 PM

Re: Slow PAn look unnatural on Tv-Pc display screen
 
Dear Eric,
i'm keeping testing the d7k videos.....
THe shutter is @1/50 th, the pans and tilts are very slow and i'm shooting in M Mode.
I tryed to use the shutter at 1/100th but i still fell unnutural move on the screen even when the slow cars pass by on the frame, Maybe i'm doing something wrong?

have a great w-e

Chris Medico April 16th, 2011 03:50 PM

Re: Slow PAn look unnatural on Tv-Pc display screen
 
Post an example online of what you are seeing if possible. It will be easier to help you figure it out if you can post an example.

Are you shooting in 25p?

Marcus Martell April 16th, 2011 07:08 PM

Re: Slow PAn look unnatural on Tv-Pc display screen
 
I'll try tomorrow!
By the way i'm in Pal land and i'm shooting 24p (the only option to have max 1920x1080 full resolution).
Do you thin a new firmware could give us other options about frame rate etc?

Marcus Martell April 17th, 2011 03:04 PM

Re: Slow PAn look unnatural on Tv-Pc display screen
 
The cars on the plasma trough my WDTV looks really unnatural, same thing on the first clip on the pan from left to right!
the password to view the video with this test is: dvinfo
let me know
thx
I just draggd the files on the timeline without trascoding

Chris Medico April 17th, 2011 05:18 PM

Re: Slow PAn look unnatural on Tv-Pc display screen
 
I am seeing problems that come from the rolling shutter on the tilts and pans.

What I have done personally to minimize those effects is to do those kind of moves on the end of a jib. The pans especially are MUCH cleaner.

For the tilts you will have to experiment with different speeds and find one that doesn't cause the motion artifacts you are using. You can try a different frame rate and see how that affects what you are seeing.

Marcus Martell April 21st, 2011 02:51 PM

Re: Slow PAn look unnatural on Tv-Pc display screen
 
Question:
Do u disablethe VR?
I just found out that on 16-85 i left it ON.....
The video i uploaded it was a test with optics without the botton VR but i can see a lot of JELLO.

Marcus Martell April 28th, 2011 04:39 PM

Re: Slow PAn look unnatural on Tv-Pc display screen
 
Here's another video test
do u see rolling shutter?
Do you have suggestion about shutter speed (check cars crossing) and iso ?
thx


Eric Pascarelli April 28th, 2011 05:21 PM

Re: Slow PAn look unnatural on Tv-Pc display screen
 
1 Attachment(s)
Marcus,

There is some sort of frame blending happening on your footage. It's unlikely the camera and more likely something you are doing after copying it from the camera. Here's a still that shows the ghost blended image, especially visible on the white car and the headlight of the blue car.

I see this artifacting over all of your footage.

Can you open the camera original file in QuickTime and step through it to that frame and see if you see that ghosting in the camera file? I bet you won't. Then it's a matter of seeing where this artifact is being introduced.


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