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

agsy · 10-05-2010, 01:01 PM

The A33 is 14 MP...as far as IS I'm not sure, haven't tried the Sony. I'd say, try the Pentax first, see how you like the video. You won't be disappointed in the image quality department.

Coby · 10-05-2010, 04:06 PM

> can u record at all at 30fps

No - The K-x records 24P. It's possible to convert that during editing for playback at 30P, but there is no 30P recording option.

bsmith40 · 10-10-2010, 10:02 AM

What conditions result in a "jello" effect?

Impartial · 10-10-2010, 10:10 AM

Originally posted by bsmith40

What conditions result in a "jello" effect?

I don't have a vDSLR, but as I understand it, the wobble is producedby a combination of long lens focal length, and fast panning. But I am not sure what the thresholds are where it becomes a problem, e.g. can you whip around recklessly at 55mm? At 40mm? At 28mm?

agsy · 10-10-2010, 02:54 PM

The "jello" effect, as far as I understand, is due to the sensor data readout. CCD sensors read the data at once on the whole sensor, CMOS sensors start from the top left and ends at the bottom right. If the camera is held still, the effect is not noticeable. When panning from left to right or right to left, it's more apparent. I believe the faster fps the video supports, the less noticeable is the "wobble".

jogiba · 10-11-2010, 06:40 AM

Originally posted by agsy

Nice video and pretty sick zoom.

Here are two clips I shot on friday at full zoom handheld that can't be done on a DSLR.

[YT]http://www.youtube.com/watch?v=XMTjK5caLcA[/YT]
[YT]http://www.youtube.com/watch?v=KfwA15dgqJQ[/YT]

agsy · 10-11-2010, 09:50 AM

Some sick zoom there!

agsy · 10-11-2010, 09:52 AM

Originally posted by jogiba

Here are two clips I shot on friday at full zoom handheld that can't be done on a DSLR.

DSLRs are not as practical for long zoom video, however they can serve as decent video cameras for every-day clips. I specifically love the shallow DOF you can achieve with some fast lenses.

lovemehate · 10-11-2010, 11:29 AM

well I went ahead and got a Pentax with the starting lens, and then a 50 A F/1.7 lens (it was like 50) cause I wont be doing much zoom (for now) and the price difrence for the the 300mm was almost 200USD and there are plenty of 200 or 300mm lenses out there for around that anyway.

I just hope I can find the correct settings to reduce the wobble I saw someone talk about It somewhere on youtube about setting something up first....

err anyone know what am talking about?

agsy · 10-11-2010, 12:16 PM

Well congratulations on your new camera! Great choice.

Originally posted by lovemehate

I saw someone talk about It somewhere on youtube about setting something up first....

Tripod maybe

. As long as you keep the panning speed under control, you should be ok.
The A1.7 is a great lens BTW. Keep us posted about how things are going with your K-x.

jogiba · 10-11-2010, 01:11 PM

Originally posted by agsy

DSLRs are not as practical for long zoom video, however they can serve as decent video cameras for every-day clips. I specifically love the shallow DOF you can achieve with some fast lenses.

My 85mm F1.4 has a shallow DOF on my K-7 even @F8.
[YT]http://www.youtube.com/watch?v=GuCXXi94sNQ[/YT]

w/50mm F1.4 :
[YT]http://www.youtube.com/watch?v=ZU2JEQZYMtI[/YT]

agsy · 10-11-2010, 03:52 PM

Nice

. Try that with a P&S

jogiba · 10-11-2010, 06:39 PM

[YT]http://www.youtube.com/watch?v=sEBZjz9Q_fQ[/YT]

play in 1080p full screen mode

lovemehate · 10-12-2010, 02:10 AM

Yes, I have really enjoyed my topics on here, I dont normally use forums, But so far this place has a great group of people.

I would love to share my photos and learn more from your guys exp.

lovemehate · 10-12-2010, 02:12 AM

very nice vids! Is there an image stabilization setting or something to help in the Kx ?

10-11-2010, 12:16 PM	#25
agsy Veteran Member Join Date: Aug 2010 Location: Florida Photos: Gallery \| Albums Posts: 551	Well congratulations on your new camera! Great choice. Originally posted by lovemehate I saw someone talk about It somewhere on youtube about setting something up first.... Tripod maybe. As long as you keep the panning speed under control, you should be ok. The A1.7 is a great lens BTW. Keep us posted about how things are going with your K-x.

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

10-05-2010, 01:01 PM	#16
agsy Veteran Member Join Date: Aug 2010 Location: Florida Photos: Gallery \| Albums Posts: 551	The A33 is 14 MP...as far as IS I'm not sure, haven't tried the Sony. I'd say, try the Pentax first, see how you like the video. You won't be disappointed in the image quality department.

10-05-2010, 04:06 PM	#17
Coby Senior Member Join Date: Dec 2009 Posts: 106	> can u record at all at 30fps No - The K-x records 24P. It's possible to convert that during editing for playback at 30P, but there is no 30P recording option.

10-10-2010, 10:02 AM	#18
bsmith40 New Member Join Date: Jan 2010 Location: Cincinnati, OH Posts: 26	What conditions result in a "jello" effect?

10-10-2010, 10:10 AM	#19
Impartial Senior Member Join Date: May 2010 Photos: Gallery Posts: 208	Originally posted by bsmith40 What conditions result in a "jello" effect? I don't have a vDSLR, but as I understand it, the wobble is producedby a combination of long lens focal length, and fast panning. But I am not sure what the thresholds are where it becomes a problem, e.g. can you whip around recklessly at 55mm? At 40mm? At 28mm?

10-10-2010, 02:54 PM	#20
agsy Veteran Member Join Date: Aug 2010 Location: Florida Photos: Gallery \| Albums Posts: 551	The "jello" effect, as far as I understand, is due to the sensor data readout. CCD sensors read the data at once on the whole sensor, CMOS sensors start from the top left and ends at the bottom right. If the camera is held still, the effect is not noticeable. When panning from left to right or right to left, it's more apparent. I believe the faster fps the video supports, the less noticeable is the "wobble".

10-11-2010, 06:40 AM	#21
jogiba Banned Join Date: Sep 2006 Location: Millstone,NJ Posts: 6,491	Originally posted by agsy Nice video and pretty sick zoom. Here are two clips I shot on friday at full zoom handheld that can't be done on a DSLR. [YT]http://www.youtube.com/watch?v=XMTjK5caLcA[/YT] [YT]http://www.youtube.com/watch?v=KfwA15dgqJQ[/YT]

10-11-2010, 09:50 AM	#22
agsy Veteran Member Join Date: Aug 2010 Location: Florida Photos: Gallery \| Albums Posts: 551	Some sick zoom there!

10-11-2010, 09:52 AM	#23
agsy Veteran Member Join Date: Aug 2010 Location: Florida Photos: Gallery \| Albums Posts: 551	Originally posted by jogiba Here are two clips I shot on friday at full zoom handheld that can't be done on a DSLR. DSLRs are not as practical for long zoom video, however they can serve as decent video cameras for every-day clips. I specifically love the shallow DOF you can achieve with some fast lenses.

10-11-2010, 11:29 AM	#24
lovemehate Senior Member Join Date: Oct 2010 Posts: 115 Original Poster	well I went ahead and got a Pentax with the starting lens, and then a 50 A F/1.7 lens (it was like 50) cause I wont be doing much zoom (for now) and the price difrence for the the 300mm was almost 200USD and there are plenty of 200 or 300mm lenses out there for around that anyway. I just hope I can find the correct settings to reduce the wobble I saw someone talk about It somewhere on youtube about setting something up first.... err anyone know what am talking about?

10-11-2010, 01:11 PM	#26
jogiba Banned Join Date: Sep 2006 Location: Millstone,NJ Posts: 6,491	Originally posted by agsy DSLRs are not as practical for long zoom video, however they can serve as decent video cameras for every-day clips. I specifically love the shallow DOF you can achieve with some fast lenses. My 85mm F1.4 has a shallow DOF on my K-7 even @F8. [YT]http://www.youtube.com/watch?v=GuCXXi94sNQ[/YT] w/50mm F1.4 : [YT]http://www.youtube.com/watch?v=ZU2JEQZYMtI[/YT]

10-11-2010, 03:52 PM	#27
agsy Veteran Member Join Date: Aug 2010 Location: Florida Photos: Gallery \| Albums Posts: 551	Nice . Try that with a P&S

10-11-2010, 06:39 PM	#28
jogiba Banned Join Date: Sep 2006 Location: Millstone,NJ Posts: 6,491	[YT]http://www.youtube.com/watch?v=sEBZjz9Q_fQ[/YT] play in 1080p full screen mode

10-12-2010, 02:10 AM	#29
lovemehate Senior Member Join Date: Oct 2010 Posts: 115 Original Poster	Yes, I have really enjoyed my topics on here, I dont normally use forums, But so far this place has a great group of people. I would love to share my photos and learn more from your guys exp.

10-12-2010, 02:12 AM	#30
lovemehate Senior Member Join Date: Oct 2010 Posts: 115 Original Poster	very nice vids! Is there an image stabilization setting or something to help in the Kx ?