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JimBo

Q2 4k video bit rate

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Posted (edited)

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Does anyone know the 4k recording bit rate? I’m hoping it’s over 100mbps. Can’t find anything in the specs.... thx!

Edited by JimBo
typo

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Posted (edited)
2 hours ago, willteeyang said:

Also just note, theres no manual exposure control in video mode. 

What do you mean with this? I assume you can control aperture, and/or ISO? 

 

Edited by jip

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13 hours ago, jip said:

What do you mean with this? I assume you can control aperture, and/or ISO? 

 

You will see exposure shifts and the aperture will jump all over the place regardless of what f stop you set on the lens.

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On 3/17/2019 at 12:46 AM, willteeyang said:

You will see exposure shifts and the aperture will jump all over the place regardless of what f stop you set on the lens.

This is terrible! I saw the rant about no manual control in video on the luminous landscape Q2 review but didn't assume they went so far as Auto-Aperture. That's insane.

It's especially disappointing since they did implement DCI 4K on Q2 and from what I've seen so far the image quality is actually really nice.

Here's hoping that a firmware upgrade will allow at the very least manual aperture & shutter speed control.

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On 3/18/2019 at 1:53 PM, MisterMagoo said:

...& shutter speed control.

How do you want to do shutter speed control... when you have a fixed FPS/Hz. 
 

You can't shoot at 1/45 if you want 60fps... etc. shutter speed should always be exactly you FPS. 

The things you don want to be able to control however are aperture and ISO. 

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Posted (edited)
4 hours ago, jip said:

How do you want to do shutter speed control... when you have a fixed FPS/Hz. 
 

You can't shoot at 1/45 if you want 60fps... etc. shutter speed should always be exactly you FPS. 

The things you don want to be able to control however are aperture and ISO. 

You are mistaken. In film/video shutter speed should actually be double your frame rate in order to follow 180 shutter angle rule ( How Shutter Speed Affects Video ).

You can absolutely go higher or lower than your FPS depending on what motion cadence you desire but it's always important to stay within shutter angle rules.

The problem with Q2's video mode is that shutter speed jumps all over the place as if it were in S/TV priority mode with of course no regard to shutter angle rules.

This creates chaotic motion cadence. If you add to that variable auto-aperture & auto-ISO, video mode on Q2 basically becomes unusable for serious work.

Edited by MisterMagoo

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On 3/20/2019 at 5:33 AM, MisterMagoo said:

 

If you add to that variable auto-aperture & auto-ISO, video mode on Q2 basically becomes unusable for serious work.

Unfortunately you are correct, as its confirmed on page 59 of the user manual:

 

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