Didn't have my HV20 with me or I probably would have tested... I'm finding I use the HC7 over the HV20 - at least until I get more testing time with the Canon. I'm sure the Canon would have had similar issues at the least with the difficult shooting situation.

....the hv20 has wobble on pretty normal, rather slow panning footage.Not on my HV20. Slow normal panning looks rather...um....normal. You only see that type of effect when you have quick jerky movements side to side...in that case...you wouldn't use the footage anyways....no matter WHAT type of cam you have.

The only case you might be concerned about a rolling shutter is in compositing, What Jack Kelly was gonna do with one of the cameras. With geometric correction it might work out.

By the way, I saw a video a while ago where someone composited a 3D purple teaspout into a HV10 sample. The perspective matching failed miserably. Could it be because of a rolling shutter?

By the way, I saw a video a while ago where someone composited a 3D purple teaspout into a HV10 sample. The perspective matching failed miserably. Could it be because of a rolling shutter?

only if the camera was moving

also geometric correction should be available in each software used to generate the 3D. that won't be possible. once the footage is taken, if it has wobble, it's ruined forever. even though some tracking software could fix the errors, that would remain a solution only inside that software and won't be shared thru the production pipeline.

Not on my HV20. Slow normal panning looks rather...um....normal. You only see that type of effect when you have quick jerky movements side to side...in that case...you wouldn't use the footage anyways....no matter WHAT type of cam you have.

that's not the idea, the idea was to evaluate the shutter effect on hc7 vs hv20.

Hi All

I have a Sony HC1, great little camera, a backup to my newer Sony V1U. I'm doing some shots from a moving platform with the HC1 that have exhibited what I believe is the rolling shutter effect, lines get bent and buildings look like 'jello' when the camera is jiggling a lot. The HC1's built in stabilization doesn't seem to help that part, and fast shutter speeds emphasize it. Putting the video through a stabalizer effect like Final Cut Pro 6 Smoothcam makes it smoother but it's still jiggly like jello. Unacceptable.

I'm about to purchase a HC7 as it 'seems' to exhibit less of this effect, but in all the searching I've done I don't have a definitive statement. Does anybody know if the rolling shutter effect is reduced with this camcorder?

If not any other options for a small, lightweight HDV camcorder that doesn't have this effect?

Thanks all for your advice.

-Keith

Hi Keith,

Overall, I'm very happy with my HC7e. The image quality is fantastic. I recently did a shoot with a Z1e as the "A" camera and the HC7e as the "B" camera. In some shots, the HC7e produced *better* results than the Z1. Very impressive. The slow-mo feature is nice too.

Unfortunately, the HC7 certainly does suffer from a rolling-shutter. If you're looking for the rolling-shutter artefacts, you can see them in a lot of the footage recorded from the camera. There are people who claim that rolling shutter wont be an issue for the majority of shooters because - they ask - "who would pan that fast?" But you don't need to pan fast to see rolling shutter issues. Just doing a hand-held shot on a long lens shows the rolling shutter as the camera jiggles.

I phoned both Canon and Sony to ask about the rolling shutter issues with their cameras but neither company could give me a satisfactory answer.

If you absolutely have to have a camera which doesn't have a rolling shutter then opt for a CCD camera rather than a CMOS camera (e.g. the Z1).

Thanks,
Jack

It's not just panning that exhibits rolling shutter issues; high shutter speeds will virtually always out the rolling shutter problems. However, slow pans, slow shutter, thsi shouldn't be a problem. It rarely is for me.

Since this thread veered pretty far from V1/FX7 posts, I thought that I would clarify that the HC cameras don't have the CMOS polling speed of the V1/FX7 as Sony put 4 pixel reader unitss in the V1/FX7. I haven't seen nearly the rolling shutter effect on the V1 as the HC cameras. Also, in situations with vibration, it may be preferable to turn off image stabilization on CMOS cameras. The fast motion of the image stabilizer itself may make rolling shutter seem worse since the stabilizer may actually move during the exposure/read. This is something you should try so you can know which you prefer.

that's not the idea, the idea was to evaluate the shutter effect on hc7 vs hv20.Sorin...I know what you are saying and what this thread's topic is..but I wasonly addressing this statement "....the hv20 has wobble on pretty normal, rather slow panning footage'...
But if you want to talk higher shutter speeds then yes...not necessarily wobbles...but panning in full or even semi zoom produces those rolling shutter artifacts. I found that the higher I go...the more pronounced it is.

Sorin...I know what you are saying and what this thread's topic is..but I wasonly addressing this statement "....the hv20 has wobble on pretty normal, rather slow panning footage'...
But if you want to talk higher shutter speeds then yes...not necessarily wobbles...but panning in full or even semi zoom produces those rolling shutter artifacts. I found that the higher I go...the more pronounced it is.

ok, let's see a normal footage from here: http://www.fxsupport.de/24.html.

then stabilize for rotation, start-end averaging of xy position and reduce speed to 50%. both cameras on the same tripod which was accidentally hit.

http://img176.imagevenue.com/img.php?image=70745_snapshot20070831172358_122_122lo.jpg

here's the video, it wasn't allowed attached for it's size so i've put it here
http://rapidshare.com/files/52307929/cx6hv20_v2.avi