Hi Josh, have you tested to see this with actual measurements? Various sites seem to have conflicting points about the rolling shutter. Some say that the speed is the same from 24 to 60 for the 1DX. Have you seen a difference?
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Josh Denver said:-4K 50p/60p is twice as fast. Because the chip is forced to get 60 frames in a second each frame is read faster. Half 30millisecond is 15ms, which is Sony FS7/300 rolling shutter speed.(Has that videoish 60p look though of course or has to be slowed down)
If you want to conserve memory space shooot in 1080p, All-i setting, 24/25/30p. Or 60p if you want to slow it down (or like the fluid 60p look god forbids)
lay85 said:So I spoke to Canon quite a bit yesterday, they have watched the sample video and are aware of the issue but dont have a definate answer yet but I have heard rumours of a software upgrade.
As far as the 200 dust spots on the sensor, they tell me the warranty is void if I get the sensor cleaned at a non Canon service centre which is a pain as I live 5,000km from the nearest one so I'd be 1 month without the camera for each time it's cleaned.
lay85 said:But the problem we're experiencing is no panning, just basically stationary but bumpy. There is no scene moving across the frame or no object moving across the frame.
serenaur said:lay85 said:But the problem we're experiencing is no panning, just basically stationary but bumpy. There is no scene moving across the frame or no object moving across the frame.
In which case, unless you are using some form of camera stabilisation like a steadicam or gimbal, the bumpy up and down motion of being in the car is equivalent to quickly panning left and right which is what would cause the jello effect, just on a different axis.
lic4 said:It seems clear that lay85 has a problem in his camera, and it has nothing to do with operator error.
I tested my 1DX Mark II rolling shutter at 23.976FPS against my 5D Mark III, based on Josh Denver's post that the sensor speed could be 30ms. I recorded whip pans with the two cameras mounted on the same tripod. The 1DX Mark II appeared to be noticeably faster than the 5D Mark III shooting at 24P, giving vertical lines less of an angle of skew. For me, this supports the measurements by Cinema5d.com that the 1DX Mark II has a speed of 14ms to the 5D Mark III's 18ms. Changing from 60p to 24p does not appear to change the sensor speed.
As for Jack's question, the camera does not have any stabilization in the body, but is limited to stabilization offered in various Canon lenses.
That actually contradicts with my findings. Mine is close to what lay85 has, unless you are saying that I have a faulty camera as well.lic4 said:It seems clear that lay85 has a problem in his camera, and it has nothing to do with operator error.
I tested my 1DX Mark II rolling shutter at 23.976FPS against my 5D Mark III, based on Josh Denver's post that the sensor speed could be 30ms. I recorded whip pans with the two cameras mounted on the same tripod. The 1DX Mark II appeared to be noticeably faster than the 5D Mark III shooting at 24P, giving vertical lines less of an angle of skew. For me, this supports the measurements by Cinema5d.com that the 1DX Mark II has a speed of 14ms to the 5D Mark III's 18ms. Changing from 60p to 24p does not appear to change the sensor speed.
Jack Douglas said:Please excuse my lack of experience in this but does a camera that has IS built in function similarly to having a steadicam type device?
Jack
serenaur said:Jack Douglas said:Please excuse my lack of experience in this but does a camera that has IS built in function similarly to having a steadicam type device?
Jack
No, it's more like shooting video with an IS lens on a body without in-body stabilisation. I use a Sony A7SII which has IBIS with a Metabones adapter and my Canon glass for work and from my limited experience of hand held shooting (I shoot video for work almost exclusively on a tripod or slider), I've found it to basically be like adding IS to my non-IS lenses. I also have a mechanical glidecam clone for personal use, though I have barely had a chance to use it since I got it as I have been so busy shooting for work. The times I have managed to briefly get out with it have shown that IBIS and gimbal stabilisation are not even comparable. Steadicam/gimbal stuff is just that much better *as long as the operator is skilled,* which I am not!
Saying that, the recent leaps in combining IBIS and lens stabilisation seems to be yielding good results in certain situations. I can't find it now (I just spent about 30 mins looking through my internet history for it!), but a fairly recent video I watched of what I believe was an Olympus E-M1 mkII matched with an Olympus stabilised lens showed impressive results for casual use. If I'm able to find the video again I will update my post, though it may have been a different camera which might be why I can't find it.
@OP - sorry for the thread hijack! I am weighing up a 1DXII purchase with some video use in mind so am watching related threads quite closely at the moment.
Thanks for sharing, much appreciated.lic4 said:This is a test using a opening and closing door with cameras positioned one over the other at the same vertical angle. Please forgive me for doing this so crudely; it isn't pretty, but it's good enough for me.
I'm attaching six images showing new tests I made. The first four are images at 23.976fps, 4K MJPG on the 1DX Mark II next to 23.976 1080 All-I on the Canon 5D Mark III. I included a red line from the 5D III next to the 1DX to show the difference.
The final two images are comparisons with the 1DX Mark II at 60p. The relative difference and improvement in rolling shutter to the 5D Mark III appears to be the same either at 24p or 60p. I was surprised to see that the difference to the 5D is not that much.
lay85 said:It's now been over a month since I contacted Canon about this and still have no explanation or reply since 5th December.
I did however get the sensor cleaned and wow, what a difference. I had been a bit unhappy with the still image quality but now they look quite a bit better and sharper but the camera did arrive with so much dust on the sensor, worse I've ever seen in 10 years.
RE: The video issue again, we are using one of the best stabilisation systems ( 2x kenyon gyro) and have been for 6 years with no issue and the 1920 x 1080 footage is super smooth so just the 4k which is crap.