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07-05-2019, 03:10 AM   #1
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Video plug in possible ?

Hi there,

First of all I am not a video shooter know very little about it, this is just my random crazy thought about shooting high end video with Pentax.
Many shooters especially new comers to the hobby or profession will simply skip Pentax due to lacking of high end Videography capacity like 4K, even those rarely shoot video still want a 4K capable camera, and frankly hardly any camera in current production has no 4K and 6K consumer model has already arrived, I won't care even the next Pentax still has no 4K, but in order to survive Pentax has to do something.

As far as I know and understand shooting video does not need a very high res. sensor but the camera must have high processing power and memory still camera lacks, but will 'plug in' solve that ? I mean for example, a add-on AV grip with additional hardware like 4/6K processor and multi channel audio mixer and EQ.....etc., so that we have the option to spend more for video or keep it simple for still ? the idea may sounds silly, but what about to gear up the camera to make it handles like a real video camera, why not go for a standard video camera like the Canon XC-10 instead, that's silly too.

07-05-2019, 03:37 AM - 3 Likes   #2
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This would be cool, but given the fact that nobody uses Pentax for pro video, why would the system need better video support in order to survive? Traditional DSLR still shooters are Pentax's niche. Developing support for such an accessory would divert attention away from this.

Adam
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07-05-2019, 11:29 AM   #3
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Sensors that are used to shoot video are designed for it. Current Sony and Canon CMOS-based sensors typically have multiple parallel analog-to-digital convertors (ADCs), controlling logic, and related amplifiers on the same silicon die that includes the active photosites (pixels). To shoot 4k video at 60fps, it is done with 10-bit ADCs clocked in parallel. Further, the sensor chip has to be based on "global shutter" design. The sensor then needs to be combined with a very fast FPGA and fast memory. So, this is a "Design from the Beginning" situation - it has to be engineered in.
The downside of CMOS sensors with the speed and on-board ADCs is limited dynamic range and cost. Higher resolution sensors with lots of pixels take a lot longer to download, and also can have more ADC bit depth (eg 12bit or more). Professoinal scientific still CCD cameras tend to have 16bit operation, and are relatively slow (from about 4fps to 20fps) but deliver much better reults.
So you can't just bolt on something to do the job after the fact. It has to be designed in.
07-05-2019, 10:02 PM   #4
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QuoteOriginally posted by ProfessorBuzz Quote
Sensors that are used to shoot video are designed for it. Current Sony and Canon CMOS-based sensors typically have multiple parallel analog-to-digital convertors (ADCs), controlling logic, and related amplifiers on the same silicon die that includes the active photosites (pixels). To shoot 4k video at 60fps, it is done with 10-bit ADCs clocked in parallel. Further, the sensor chip has to be based on "global shutter" design. The sensor then needs to be combined with a very fast FPGA and fast memory. So, this is a "Design from the Beginning" situation - it has to be engineered in.
The downside of CMOS sensors with the speed and on-board ADCs is limited dynamic range and cost. Higher resolution sensors with lots of pixels take a lot longer to download, and also can have more ADC bit depth (eg 12bit or more). Professoinal scientific still CCD cameras tend to have 16bit operation, and are relatively slow (from about 4fps to 20fps) but deliver much better reults.
So you can't just bolt on something to do the job after the fact. It has to be designed in.
IC, and Pentax still rely on Sony for sensor...

---------- Post added 07-06-19 at 01:25 PM ----------

QuoteOriginally posted by Adam Quote
This would be cool, but given the fact that nobody uses Pentax for pro video, why would the system need better video support in order to survive? Traditional DSLR still shooters are Pentax's niche. Developing support for such an accessory would divert attention away from this.
"nobody uses Pentax for pro video" because Pentax does not offer that option yet, and I wouldn't care if Pentax decided to stick with stills only, but the fact is the 4/6K wave is killing everything else, no matter a pro shooter or a new comer noob they all want 4K nothing less. Pentax is not Lecia or Hasselblad that still can survive without 4K, simply we 'niche' a relatively small group of users may not possible to support the brand to live on, I am quite worry about that although I don't shoot video.

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