quick clarification

Jon Oskar · January 31st, 2009, 09:42 AM

Further testing.

Ozon, your initial idea (using the ipod) seems to work better. I tried with my computer screen and photoshop, using a white document that i gradually darkened than letting it cover the whole of the lens, i could dial in exactly the brightness. Firstly this is much more accurate than using the lite panel as the dimmer is not very accurate and hard to repeatedly get the same value, secondly it also seems that you need to be quite in the "middle" of the stop, if not the camera snaps to the next stop above or below choosing a random ISO. So your idea of creating different shades of gray representing different shutter speeds seems like the way to go.

Jon Oskar · January 31st, 2009, 11:21 AM

Quote:

Originally Posted by Toenis Liivamaegi

I have found that "auto lightning optimizer" helps on 50hz flicker a bit.
I've been shooting in 1/40th 1/50/th and 1/60th and nothing flickers.
But then on the other day every light flicked and I turned the lightning optimizer back to "strong".
T

I found turning the camera off and on again will stop the flicker, i think it may have to do with at what point it syncs up with the 50 Hz flicker, so if you happen to have turned the camera on at an unfavorable moment the flicker is more pronounced. I may be wrong, but at least it seamed to solve the problem.

Jon Oskar · January 31st, 2009, 11:35 AM

double post

Ozan Biron · January 31st, 2009, 02:59 PM

Quote:

Originally Posted by Jon Oskar

I tried with my lite panel and can confirm that in both 1/40 and 1/50 i can record at all iso settings between 100 - 3200. 1/40 seems easier to do repeatedly. I tried with a 50mm and 18mm nikon MF lens. Although i can set 1/60 at any iso, once i hit record the camera goes down to 1/40 or 1/50 at some random ISO. (i am doing this in AV/still+movie/exposure simulation)

Ive never tried Av mode. Is there an advantage? Or samething as in M mode?

I also was able to get 1/60 and various ISO settings but wasnt able to lock it down.

Noah Yuan-Vogel · January 31st, 2009, 03:52 PM

exposure simulation will not give you the right shooting information for movies. no matter what mode you are in, the camera shoots the movies the same way, but only movie mode actually tells you close to what it will do when you press record. At least that's my understanding.

Jon Oskar · January 31st, 2009, 05:54 PM

Quote:

Originally Posted by Ozan Biron

Ive never tried Av mode. Is there an advantage? Or samething as in M mode?

I also was able to get 1/60 and various ISO settings but wasnt able to lock it down.

How To Use Video Mode on the Canon 5D MK II on Vimeo

Mathieu Kassovitz · January 31st, 2009, 07:28 PM

Quote:

Originally Posted by Toenis Liivamaegi

But when using EF compatible lens there is no chance to get the shutter up from 1/20th when using 19mm wide lenses for example and it will not come down from 1/80th or 1/100 when using 85mm lens - this is pure logic of photography shutter speeds vs lens focal length but why on earth did they implement it to a movie mode?

Are you really sure that you are not dealing with the photo mode during the video recording?

January 31st, 2009, 09:42 AM	#46
Jon Oskar Regular Crew Join Date: May 2005 Posts: 41	Further testing. Ozon, your initial idea (using the ipod) seems to work better. I tried with my computer screen and photoshop, using a white document that i gradually darkened than letting it cover the whole of the lens, i could dial in exactly the brightness. Firstly this is much more accurate than using the lite panel as the dimmer is not very accurate and hard to repeatedly get the same value, secondly it also seems that you need to be quite in the "middle" of the stop, if not the camera snaps to the next stop above or below choosing a random ISO. So your idea of creating different shades of gray representing different shutter speeds seems like the way to go.

January 31st, 2009, 11:35 AM	#48
Jon Oskar Regular Crew Join Date: May 2005 Posts: 41	double post

January 31st, 2009, 03:52 PM	#50
Noah Yuan-Vogel Major Player Join Date: Dec 2004 Location: New York City Posts: 613	exposure simulation will not give you the right shooting information for movies. no matter what mode you are in, the camera shoots the movies the same way, but only movie mode actually tells you close to what it will do when you press record. At least that's my understanding.