Originally posted by dcshooter Can't really agree with these. First, the Pentax MJPEG in the K-5 implementation royally sucked. It was non-standard, had terrible compatibility with most software, and had terrible color reproduction and artifacting problems. There was
never any high end appeal, especially considering the far superior results the 5dmkII was getting 2 years before the K-5 was even released. Furthermore, given the storage limitations at the time (2gig max file size), it produced files that were waaaay too big. Saying they should have just gone to Prores @500mbps is pretty naive, considering the Prime processing engines used in every one of the Pentax bodies have been waaaay too underpowered to handle such a bitrate without choking. Could they have gone with a more powerful processor? Sure, but that would move them out of their position as an excellent, affordable stills camera, which has worked out quite well for them.
Furthermore, while the SR was a step backwards, saying it was the best in the business for video is absolutely ludicrous. The IBIS system on the Sony A55, which was released in the same month, was far superior, as were OS lenses on Canon or the Panny GH series.
The SONY A55 image stabilisation - YouTube
And let's face it, Ricoh has no interest in being a video camera company and have gone on the record stating as much. They will
never "dominate the market." Personally, I don't care too much, as I have bought into the Pentax system for stills and can use my GH2 for video or buy a G7 if I want 4k. In the meantime, I'll happily continue to use the most feature-packed FF stills camera on the market and enjoy the fact that it cost me under 2 grand.
Are you sure the A55 has mechanical video stabilization? I've had the a57 for a short while, and there stabilization was electronic only. A significantly better implementation than what Pentax used, but it was clearly software only. In your sample it's hard to tell, because when it is bright, software stabilization can work well.
So it may not be the sensor overheating because of moving the sensor, but because the camera has to read out more of the sensor, which is what really causes heat. Also the processor has to work harder. SR would actually be heating up the camera less. It matches my experiences anyway: I've recorded for something like 1 1/2 hours with no interruption but how long it takes to push the shutter again, in a hot venue. Did the camera show me a warning eventually? Yes. Did it shut off? Nope. Same venue, mirrorless Sony (NEX-5 I think) did shut off. And a GoPro got so hot it was a bit painful to touch.
@THoog: The thing is to implement video SR in Pentax cameras isn't hard, because it already exists. Switch your camera to live view in stills mode, and you'll get stabilized video. It absolutely works in the K-3, not sure which other cameras I have tried. I believe the K-1 too.
I think the problem with enabling it on older cameras is that any change to the firmware may cause unexpected bugs in the weirdest places. So they need to do a lot of testing to make sure owners won't brick their camera. For a new camera that is getting updates anyway (bug fixes, new features, ...) that is no big deal, they are going to do lots of testing anyway. But old cameras are a different matter. So implementing the new feature would be relatively trivial, but there's a ton of stuff attached to it. While it sucks for owners, I can fully understand it.
Also, the higher-end the camera, the more... erm, expected are regular firmware updates and continuous improvements to the camera. And the K-1 has a long shelf life as mentioned by Pentax, something that is also rather common for higher end models (Canon replaces their 3 and 4 digit cameras like underwear, while the single digit ones stay around for many years). Since the K-1 is going to stay for many more years, and was basically just released, it makes sense to update it.
I wonder if Pentax is still going to crop the sensor when shooting video with mechanical SR, and if they are going to offer a third mode that combines mechanical and software stabilization. Mechanical is great at sorting out quick movements that can lead to motion blur in random directions or wobbly video, while software stabilization works great for slower shake/movement. Basically the software SR could work to move the sensor back to the center, so that the mechanism doesn't tilt.
@richandfleur: Clean HDMI may or may not be easy to do. It all depends on the processor. The processor processes the sensor input, does it's noise reduction, white balancing etc., and then feeds it to the encoder section of the camera. There needs to be a full res connection from there to the HDMI port. The question is how flexible is the processor? The screen is getting a live feed, but at lower resolution and with overlays. That's of no use for clean HDMI. I am speculating at this point, but what I am saying is there can be issues. We aren't talking about a computer or smartphone processor that is very flexible. These are specialized processors for one task, and enabling clean HDMI can mean having to redesign that processor. Now Nikon cameras show that it is possible based on a Milbeaut processor, but Nikon AFAIK is using specialized versions just meant for Nikon, based on what Nikon is asking the manufacturer to do.
I'd also like to say thank you Pentax. As of now I don't need to replace my Pentax, been shooting less anyway as I've changed jobs and am now mostly writing and doing some Photoshop. But the K-3 successor could be my next camera. Thank god I don't HAVE TO change systems.