Before I buy a K-x about the "jello" effect

lovemehate · 10-04-2010, 02:30 AM

I have been looking and reading everywhere, I have watched tons of videos.
I notice that A lot have some kind of jello effect to them. or just a lot of blur with movment,

Is this cause of the 25fps? (its 25 right?) or just people not using the right settings?

I want a great SLR with great video, I know I might be asking for too much, but your In site on this would be great as am looking to buy as soon as tomorrow

am looking to make shorts and video projects with it, but also learn Digital photography, and how to use a SLR.

Thanks for reading!

deltoidjohn · 10-04-2010, 04:46 AM

The wobble is caused by the "rolling shutter" of the CMOS chips in video mode. Rather than reading all the lines off the sensor at once, it scans them from top to bottom consecutively. So the bottom of the sensor is read at a later moment than the top line, meaning things will have moved during that time - resulting in skew and wobble.

If you shoot properly and carefully then you won't have too many problems. If you shoot like a "soccer mum" - handeld with a 300mm lens doing whip pans - then you're gonna run into trouble!

lovemehate · 10-04-2010, 08:32 AM

So in the right hands this is a nice lil video cam as well? I know this Is a Pentax fourm, I can I ask how It holds up to something like that Sony NEX 5 or even the olympus p1?

what do you suggest?

Coby · 10-04-2010, 03:50 PM

1) It's 24P, not 25P

2) It has bad jello, as do many of the much pricier 1st-generation vDSLRs. I believe the NEX is better jello-wise, I don't know about the Olympus. There should be plenty of online footage for both, however.

deltoidjohn · 10-04-2010, 11:39 PM

I can't compare it to either of those cameras but I can say it's biggest downfall is the lack of manual controls.

lovemehate · 10-05-2010, 12:19 AM

now am looking at the ...Canon - EOS Digital Rebel T1i

I guess what am trying to ask is, Is there settings to help with the jello effect or any other problems? like i wont be using the highest settings, or am i just stuck with it?

0rangepeel · 10-05-2010, 12:56 AM

As deltoidjohn mentioned, jello effect will still be present regardless if you use the T1i or the K-x because they both have CMOS sensors. As long as you don't plan to do alot of fast panning, it should perform decently.

lovemehate · 10-05-2010, 01:03 AM

thanks for your help so far, I can u record at all at 30fps? even with lower res? also am torn between Canon - EOS Digital Rebel T1i and the Pentex X-y

deltoidjohn · 10-05-2010, 03:26 AM

The Canon T1i will have the same rolling shutter effects as the K-X, is more expensive, and is nowhere near as good of a still camera.

If you're considering anything from Canon, let it be the t2i (550D). It gives much better options for video and is not already a year obsolete!

agsy · 10-05-2010, 04:38 AM

If you really want to get rid of the jello effect using a digital camera, you would have to go with either a DSLR with CCD sensor or a P&S camera.

jogiba · 10-05-2010, 06:30 AM

Originally posted by agsy

If you really want to get rid of the jello effect using a digital camera, you would have to go with either a DSLR with CCD sensor or a P&S camera.

I just purchased the new Canon SX30 IS that has CCD (no jello effect) and HD video with a 35x optical zoom and it is fun to use the 24-840mm (35mm eqiv) power zoom lens with 4x digital for a 3360mm !

[YT]http://www.youtube.com/watch?v=9lR9NlJ2a6g[/YT]

agsy · 10-05-2010, 07:41 AM

Nice video and pretty sick zoom.

lovemehate · 10-05-2010, 09:22 AM

but the Canon SX30 is not a SLR

i dont think i can goto sschool with it

agsy · 10-05-2010, 09:56 AM

If you really need a DSLR for video purposes, you might want to consider the new Sony A33 or A55. It seems that people love the video and most importantly it auto focuses for you. Check out this video (scroll to 2:10) that demonstrates the quality and jello effect (hardly any).

You Tube

Good luck.

lovemehate · 10-05-2010, 10:19 AM

noooo more choices! arrraahhhh
I dont know why am sold on that pentax...but i dont know If ill need the 15 megapixels over the 12 from the pentax

which has better image stabilization for photos?

10-04-2010, 02:30 AM	#1
lovemehate Senior Member Join Date: Oct 2010 Posts: 115	Before I buy a K-x about the "jello" effect I have been looking and reading everywhere, I have watched tons of videos. I notice that A lot have some kind of jello effect to them. or just a lot of blur with movment, Is this cause of the 25fps? (its 25 right?) or just people not using the right settings? I want a great SLR with great video, I know I might be asking for too much, but your In site on this would be great as am looking to buy as soon as tomorrow am looking to make shorts and video projects with it, but also learn Digital photography, and how to use a SLR. Thanks for reading!

10-05-2010, 06:30 AM	#11
jogiba Banned Join Date: Sep 2006 Location: Millstone,NJ Posts: 6,491	Originally posted by agsy If you really want to get rid of the jello effect using a digital camera, you would have to go with either a DSLR with CCD sensor or a P&S camera. I just purchased the new Canon SX30 IS that has CCD (no jello effect) and HD video with a 35x optical zoom and it is fun to use the 24-840mm (35mm eqiv) power zoom lens with 4x digital for a 3360mm ! Vimeo [YT]http://www.youtube.com/watch?v=9lR9NlJ2a6g[/YT]

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
K-7 has graced the cover of the September issue of Pop Photo as a "Best Buy!"	Matjazz	Pentax DSLR Discussion	33	11-04-2012 11:57 AM
Consumer Reports Magazine picks K200D as "Best Buy"	Nubi	Pentax News and Rumors	8	11-25-2009 06:18 PM
K-7 Video - Jello Effect?	jct us101	Video Recording and Processing	14	10-31-2009 08:27 AM
another "should I buy?" thread: DA 70mm f/2.4L - I have a Tammy 28-75/2.8 & FA 50/1.4	m8o	Pentax SLR Lens Discussion	11	08-26-2008 09:09 AM
At attempt at fake HDR and emulating "The Dave Hill Effect"	lastdodobird	Post Your Photos!	2	03-05-2008 06:51 PM

10-04-2010, 04:46 AM	#2
deltoidjohn Forum Member Join Date: May 2010 Location: Gold Coast, QLD Posts: 88	The wobble is caused by the "rolling shutter" of the CMOS chips in video mode. Rather than reading all the lines off the sensor at once, it scans them from top to bottom consecutively. So the bottom of the sensor is read at a later moment than the top line, meaning things will have moved during that time - resulting in skew and wobble. If you shoot properly and carefully then you won't have too many problems. If you shoot like a "soccer mum" - handeld with a 300mm lens doing whip pans - then you're gonna run into trouble!

10-04-2010, 08:32 AM	#3
lovemehate Senior Member Join Date: Oct 2010 Posts: 115 Original Poster	So in the right hands this is a nice lil video cam as well? I know this Is a Pentax fourm, I can I ask how It holds up to something like that Sony NEX 5 or even the olympus p1? what do you suggest?

10-04-2010, 03:50 PM	#4
Coby Senior Member Join Date: Dec 2009 Posts: 106	1) It's 24P, not 25P 2) It has bad jello, as do many of the much pricier 1st-generation vDSLRs. I believe the NEX is better jello-wise, I don't know about the Olympus. There should be plenty of online footage for both, however.

10-04-2010, 11:39 PM	#5
deltoidjohn Forum Member Join Date: May 2010 Location: Gold Coast, QLD Posts: 88	I can't compare it to either of those cameras but I can say it's biggest downfall is the lack of manual controls.

10-05-2010, 12:19 AM	#6
lovemehate Senior Member Join Date: Oct 2010 Posts: 115 Original Poster	now am looking at the ...Canon - EOS Digital Rebel T1i I guess what am trying to ask is, Is there settings to help with the jello effect or any other problems? like i wont be using the highest settings, or am i just stuck with it?

10-05-2010, 12:56 AM	#7
0rangepeel Senior Member Join Date: Nov 2009 Location: Vancouver Photos: Gallery Posts: 111	As deltoidjohn mentioned, jello effect will still be present regardless if you use the T1i or the K-x because they both have CMOS sensors. As long as you don't plan to do alot of fast panning, it should perform decently.

10-05-2010, 01:03 AM	#8
lovemehate Senior Member Join Date: Oct 2010 Posts: 115 Original Poster	thanks for your help so far, I can u record at all at 30fps? even with lower res? also am torn between Canon - EOS Digital Rebel T1i and the Pentex X-y

10-05-2010, 03:26 AM	#9
deltoidjohn Forum Member Join Date: May 2010 Location: Gold Coast, QLD Posts: 88	The Canon T1i will have the same rolling shutter effects as the K-X, is more expensive, and is nowhere near as good of a still camera. If you're considering anything from Canon, let it be the t2i (550D). It gives much better options for video and is not already a year obsolete!

10-05-2010, 04:38 AM	#10
agsy Veteran Member Join Date: Aug 2010 Location: Florida Photos: Gallery \| Albums Posts: 551	If you really want to get rid of the jello effect using a digital camera, you would have to go with either a DSLR with CCD sensor or a P&S camera.

10-05-2010, 07:41 AM	#12
agsy Veteran Member Join Date: Aug 2010 Location: Florida Photos: Gallery \| Albums Posts: 551	Nice video and pretty sick zoom.

Thread Tools	Search this Thread
	Search this Thread: Advanced Search

10-05-2010, 09:22 AM	#13
lovemehate Senior Member Join Date: Oct 2010 Posts: 115 Original Poster	but the Canon SX30 is not a SLR i dont think i can goto sschool with it

10-05-2010, 10:19 AM	#15
lovemehate Senior Member Join Date: Oct 2010 Posts: 115 Original Poster	noooo more choices! arrraahhhh I dont know why am sold on that pentax...but i dont know If ill need the 15 megapixels over the 12 from the pentax which has better image stabilization for photos?