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06-15-2014, 05:46 PM   #46
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QuoteOriginally posted by IchabodCrane Quote
If they change the sensor to 24 MP, they likely have to change the processor along with it as there's never been any evidence the Prime M can handle more than 16 MP.
If you were being super lazy, a die shrink would do it (smaller chip == better performance == better power consumption)

---------- Post added 06-16-14 at 02:23 AM ----------

QuoteOriginally posted by Nicolas06 Quote
Azergoth, i don't want to be offensive, but I would say you care to much about the numbers/spec and not enough about the real photos. You are not happy because of the file format, or one camera that is good but too old and another one that is too heavy.

Just for the 12bit vs 14bit thing:

The best FF from Canon, with all their shiny 14bit, they are less effective at shadow recovery (dynamic range) than a basic Kr or a K30.
The best APSC from Canon cannot neither achieve the high iso performance of a K30.
The best APSC from Canon is worse than a K10D in term of color deph.

There 2 bit in difference between K3/K5-II vs K500 for example, but when you read the charts: all 3 have same color deph, the K500 is arround the same level for dynamic range as K3 and the isos perf difference is maybe within 0.1EV range difference.

You eyes would not see the difference.

Worse: if you try to recover too much the shadows, even at iso 100 with the best Camera, the colors start to feel dull, the noise become much more visible, and the result is just so-so. The solution to good shadow is proper exposure from the begining, not moving cursors in LR or DxO.
Re 12 vs 14 bit, yes there is a big difference. 2bits is a 4x improvement in the amount of colour information you can capture. People who assume this is simply about pulling more info from the highlights/shadows are looking in the wrong place entirely.

The improvement is in the accuracy of pastel shades, skin tones, and odd lighting conditions. If your image is over/under exposed, then 14bits really won't help salvage that image.

You're right to say that the dynamic range of the k-50/k-5 are similar, because they are (it the same sensor after all!). The additional bits just gives you better accuracy within that range, and that allows you to capture colours more accurately. The effect is subtle admittedly, but it is there, and once you notice the improvement, it's hard to go back!


Last edited by robthebloke; 06-15-2014 at 06:24 PM.
06-15-2014, 09:16 PM   #47
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QuoteOriginally posted by robthebloke Quote
2bits is a 4x improvement in the amount of colour information you can capture
Normally, it's bad form to quote yourself https://www.pentaxforums.com/forums/151-pentax-k-30-k-50/260348-quick-questio...ml#post2800168
but this bit-depth to information canard drives me nuts. You could program the camera's processor to produce 64 bit RAW files and they wouldn't contain any more detail. The digital value of a single pixel is calculated from an analog signal that has a resolution equivalent to only a few bits (because the actual voltage produced by the photosite has to be contained in a very narrow range because of the minute size and high density of the circuitry) by factoring in the bias voltage applied to the sensor and the sampling period. The camera's processor can apply algorithms to smooth noise and extrapolate the actual analog signal, but it is still working with the same amount of captured information if it outputs 14 bits instead of 12. Besides, 99% of the time, the image will be viewed on a medium with no more than 8 bits of resolution (if your monitor can distinctly display 256 different shades of grey, it has 8 bits of depth).
QuoteOriginally posted by robthebloke Quote
once you notice the improvement
Any real improvement has to come from an improved processor in the camera and/or in software.
06-16-2014, 12:56 AM   #48
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I think all about bit depht has been said...

I, personally, would love to see those 12 turn into 14, others don't care :-)

Could we expect to have a "mini K-3"? Without the double SD slot, and extra fancy features, but based around the same sensor, processor (?), and AF?

Not only the K-50 becomes old, but also the k-5ii. Will there be a k-5iii or is that the K-3?
07-09-2014, 02:56 PM   #49
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QuoteOriginally posted by Azergoth Quote
Could we expect to have a "mini K-3"? Without the double SD slot, and extra fancy features, but based around the same sensor, processor (?), and AF?

Not only the K-50 becomes old, but also the k-5ii. Will there be a k-5iii or is that the K-3?
I think yes, you get the 24MP sensor of K3, maybe with 12 bits instead of 14, one slot, no extract fancy feature... And of course not the same AF. They could use the one of the K5-II or a derivative of the K3 (with something less)... But if they provide same AF module of the K3 and same sensor of the K3, there no more reason to buy K3... To do this would require to wait for next flagship with even more feature/improved AF.

07-10-2014, 12:55 AM   #50
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And the next big question is: when?
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