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11-17-2010, 07:52 PM   #1
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Quick test of continuous shooting with new K-5 firmware (1.01)

Just updated my firmware and the number of shots in continuous mode is much improved.

Shooting RAW+ (DNG and JPEG) I was able to get between 20-23 shots before the buffer filled throughout the ISO range.

23 shots at ISO 100
22 shots at ISO 5000
21 shot at ISO 6400
20 shots at ISO 51200

Pretty decent improvement considering I used to get 8 frames from ISO 80-5000 and 4 frames from ISO 6400-51200

11-17-2010, 08:09 PM   #2
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Pentax must be code wizards.
That's a very decent result indeed, especially for RAW+!
11-17-2010, 08:39 PM   #3
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How long does it take to dump a full buffer?
11-17-2010, 09:01 PM   #4
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QuoteOriginally posted by Kryosphinx Quote
How long does it take to dump a full buffer?

About 35 seconds onto a 16GB Extreme III (30MB/s) card.

11-17-2010, 09:23 PM   #5
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Brilliant.
That's my one bone of contention regarding the K-5 resolved...
I wonder how this was overlooked in the first place, if all it took was a firmware update.
Anyhow, that pushes the K-5 far and beyond its competition in every way now...
That must multiply the JPEG buffer enormously...
11-17-2010, 09:41 PM   #6
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QuoteOriginally posted by Ash Quote
Brilliant.
That's my one bone of contention regarding the K-5 resolved...
I wonder how this was overlooked in the first place, if all it took was a firmware update.
Anyhow, that pushes the K-5 far and beyond its competition in every way now...
That must multiply the JPEG buffer enormously...
Not sure what the JPEG buffer limit was before, but I just tried it out and it seems like you can get about 32-34 before it slows down. Also, if you shoot RAW only, you can get 25-26 shots before the buffer fills.
11-17-2010, 11:54 PM   #7
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QuoteQuote:
Latest K-5 Firmware Update : Software Downloads : PENTAX

Changes to V1.01

  • Increases the number of continuous shot at RAW format and High sensitivity shooting.* Ex. Setting condition: RAW/ISO100, Increases the number of continuous shot from maximum approx. 8 frames to approx. 20 frames.
  • Improved stability for general performance such as exposure range on HyP mode
========================

In addition to increasing the number of continuous shots, the firmware update also indicates an improved stability.

Any reports of improved stability in HyP mode (or any other)?
11-17-2010, 11:56 PM   #8
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QuoteOriginally posted by dgaies Quote
Also, if you shoot RAW only, you can get 25-26 shots before the buffer fills.
=================================

Once the buffer fills, how long is the delay before you can do another 25 burst?

11-18-2010, 01:39 AM   #9
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QuoteOriginally posted by Ash Quote
I wonder how this was overlooked in the first place, if all it took was a firmware update.
As a software developer, I'm quite sure they were aware of it all the way, but that they simply didn't have time to finish it in time for the short deadline. Good software developers make sure the basic functionality is implemented and that the most severe bugs are fixed before they start optimizing for speed...
11-18-2010, 04:08 AM   #10
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QuoteOriginally posted by gazonk Quote
As a software developer, I'm quite sure they were aware of it all the way, but that they simply didn't have time to finish it in time for the short deadline. Good software developers make sure the basic functionality is implemented and that the most severe bugs are fixed before they start optimizing for speed...
Ditto here. You make sure everything is stable and working before thinking about optimization, especially with short deadlines.

Now if they could implement tethering, even in a basic way, that would be the second big shortcoming of the K-5 fixed.

And the third one: get rid of the RAW NR. Or at least give us the choice to turn it off.
11-18-2010, 04:28 AM   #11
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QuoteOriginally posted by Rite Quote
=================================

Once the buffer fills, how long is the delay before you can do another 25 burst?
It takes about 35 seconds to empty the buffer. You can start shooting again sooner, but you won't get another 25 shots until it's empty. So if you wait about half the time (15-20 seconds), you would get about half a buffer's worth of shots (about 12 shots).
11-18-2010, 05:10 PM   #12
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Just curious, as I'm a raw shooter, how many 4 star jpegs til it stops?
11-18-2010, 05:21 PM   #13
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QuoteOriginally posted by Arpe Quote
Just curious, as I'm a raw shooter, how many 4 star jpegs til it stops?
38 4 star Jpeg are comming out before it slows down. And then it really slows down, to I think to some 9-10 frames in 5 seconds in very even pattern. In RAW it slows down after the buffer filled up to 1 fps, but it has a very uneven pattern in the between two shots timedelay.


If you put on all camera corrections, lens and CA then you get 19 RAW at low iso.
11-18-2010, 05:56 PM   #14
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Does it make a difference if "focus priority" is chosen over "speed priority" ?
11-18-2010, 06:27 PM   #15
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QuoteOriginally posted by pcarfan Quote
Does it make a difference if "focus priority" is chosen over "speed priority" ?
Do you mean in terms of how many frames you get or how fast the buffer fills up?
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