continuous autofocus in video mode ?


bladerunneruk

Link Posted 16/12/2012 - 01:36
Hi folks, quick query I have which googling is not giving me an answer to...

Do either of K5II or K5IIs now have continuous autofocus in movie mode ?
thanks

never know I might just upgrade if they do !

Thanks

Pentaxonian

Link Posted 16/12/2012 - 11:08
No, even if it did, it would be noisy as most Pentax lenses AF are still body driven
K5iis and a couple of lenses.

Pheo

Link Posted 25/12/2012 - 16:31
Do you really want to do that anyway?

SteveEveritt

Link Posted 25/12/2012 - 18:47
No
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"Life is what happens to you while you're busy making other plans" (John Lennon)

bladerunneruk

Link Posted 30/12/2012 - 21:39
Pentaxonian wrote:
No, even if it did, it would be noisy as most Pentax lenses AF are still body driven

I think the noise could in principle be cancelled out using signal processing techniques, especially for the SDM.

bladerunneruk

Link Posted 30/12/2012 - 21:43
Pheo wrote:
Do you really want to do that anyway?

Yes, stuff moves ! And it's a right pain not being able to refocus during movie shots except by MF

Pheo

Link Posted 02/01/2013 - 13:27
bladerunneruk wrote:
Pheo wrote:
Do you really want to do that anyway?

Yes, stuff moves ! And it's a right pain not being able to refocus during movie shots except by MF

I only mention it, due to finding most DSLR Autofocus systems to be highly sub-optimal during filming, due to the way they work. Will agree with you MF is a bit of a pain, but I get a higher hit rate than with the autofocus (and its quicker!)

richandfleur

Link Posted 04/01/2013 - 11:45
Pheo wrote:
agree with you MF is a bit of a pain, but I get a higher hit rate than with the autofocus (and its quicker!)

They could at least offer the focus peaking option in video mode then.

gartmore

Link Posted 04/01/2013 - 13:15
Pheo wrote:
bladerunneruk wrote:
Quote:
Do you really want to do that anyway?

Yes, stuff moves ! And it's a right pain not being able to refocus during movie shots except by MF

I only mention it, due to finding most DSLR Autofocus systems to be highly sub-optimal during filming, due to the way they work. Will agree with you MF is a bit of a pain, but I get a higher hit rate than with the autofocus (and its quicker!)

so it works just like a real professional movie camera. You really cannot want this

If you want to achieve anywhere near professional results MF is the way to go
Ken
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -
Last Edited by gartmore on 04/01/2013 - 13:17

McGregNi

Link Posted 04/01/2013 - 17:12
Autofocus during video recording can look bad and amaturish if it starts hunting around - best to get a lock on a mid point in the scene before starting and make tiny adjustment with MF - our DA lenses are perfect for this with their constant MF capability.

You can avoid any noise interferance anyway with a dedicated hotshoe mic - for really pro results this is the way to go (stereo also).

For me the main issue with my DSLR video (K7) is exposure - you can get it right with exposure compensation before recording (+ / - 2 stops), but can't adjust during the recording, so I find if moving indoors, say going further into a room away from the window, then it gets too dark. If I could have auto exposure adjust (keeping the compensation pre set) that would make a big difference. But then maybe this will also look bad in practice!!
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THECAMERAGUYBILL

Link Posted 28/05/2013 - 14:22
McGrgNi
Has the right answear on Video mode
Thanks

Don

Link Posted 28/05/2013 - 15:28
I have sony video cameras. I NEVER let them record on autofocus... noting worse for video than seeing the af hunt during a shot.
so why do people act like this is a good thing?
I have yet to see a pro using af....
this is why I like having the older MF lenses for shooting video.. the focus throw is perfect! they were designed for manual focus!
Fired many shots. Didn't kill anything.
Last Edited by Don on 28/05/2013 - 15:29
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