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Comment by Anvh posted on Official K-5 specs !!! at 21/09/2010 - 21:29
Smeggypants wrote:
I can't see the DisableNR parameter in the debug menu so it must only be accessed via a text file.
Yes you're right about that, it's quite strange it doesn't want to work I can't see the DisableNR parameter in the debug menu so it must only be accessed via a text file.
Comment by Anvh posted on turn off DFS with your K20D and K7 at 21/09/2010 - 21:05
Seems Sigma is copying the Pentax design.
Comment by Anvh posted on K5, was it worth the wait? at 21/09/2010 - 21:03
Does anybody know a bit more about the SDXC?
I believe that standard use FAT64 so that would mean you don't have the silly 4GB file limit any more... I wonder if you can shoot video with the K5 till the battery runs out or the sensor overheats
btw about ISO, am I the only one that's happy it can go down to ISO 80
I believe that standard use FAT64 so that would mean you don't have the silly 4GB file limit any more... I wonder if you can shoot video with the K5 till the battery runs out or the sensor overheats
btw about ISO, am I the only one that's happy it can go down to ISO 80
Comment by Anvh posted on K5, was it worth the wait? at 21/09/2010 - 20:54
Don wrote:
agreed.
I don't Smeggypants wrote:
The 2nd variable you are adding is comparing a NEW 16mp to an OLD 6mp sensor. An old 16mp sensor would also havew less performance than a modern one.
Anyway, it's all good. I'm sure we're all waiting eagerly to see some actual shots taken with this new machine.
Oh, I get it....The 2nd variable you are adding is comparing a NEW 16mp to an OLD 6mp sensor. An old 16mp sensor would also havew less performance than a modern one.
Anyway, it's all good. I'm sure we're all waiting eagerly to see some actual shots taken with this new machine.
agreed.
If you're comparing pixel for pixel than the 6MP sensor would have better quality.
But many hands make easy work or something like that right?
Don't forget that the camera needs to guess 1/3th of a photo, per pixel it only sees the colour red, green or blue. So the more you've the better the guess can be but like you said the quality of the pixel will be worse.
In the end on the monitor or on a normal print you won't see the difference I think.
Because the quality is equalled out by the quantity.
Comment by Anvh posted on K5, was it worth the wait? at 21/09/2010 - 20:51
rparmar wrote:
(No point comparing different sensor sizes, BTW, as obviously a larger sensor or film will allow more detail.)
I'm not fully happy with it either but it's true.Algernon wrote:
Highlights are very poor compared to medium or large format film and noise is a problem with the shadows due to the limited way in which this information is digitally stored. The videos on this site explain about the problems with mid-grey and below link
That sounds like bafflegab and the link points to an advertisement for someone's grey card. Any real info on this you can share?Highlights are very poor compared to medium or large format film and noise is a problem with the shadows due to the limited way in which this information is digitally stored. The videos on this site explain about the problems with mid-grey and below link
(No point comparing different sensor sizes, BTW, as obviously a larger sensor or film will allow more detail.)
It's not so good with highlights because it doesn't behave like film does but simply completely clip all the over expose area.
You can't get too dark either.
The digital sensor is a linear device, so the brighter the exposure of the sensor the more information it gathers. This where the expose to the right comes from.
Do you see the dilemma?
You want to have your photo as bright as possible but you don't want to clip it, if you want the best RAW file that is.
Smeggypants wrote:
24bit RAW ???
btw - In the audio world a file format of 32bit floating point is commonly used. it's still only 24 bit resolution but that resolution is shifted up and down per sample. Or per pixel in the snapping world.
Assuming the sensor (AD converter) can keep up that give a huge dynamic range.
Bit size doesn't say a thing about the dynamic range, only about the amount of information it holds.24bit RAW ???
btw - In the audio world a file format of 32bit floating point is commonly used. it's still only 24 bit resolution but that resolution is shifted up and down per sample. Or per pixel in the snapping world.
Assuming the sensor (AD converter) can keep up that give a huge dynamic range.
The K5 can have less dynamic range than the K7 but in return you've much smoother graduations.
Comment by Anvh posted on Official K-5 specs !!! at 21/09/2010 - 20:31
MrCynical wrote:
Sounds like Pentax might finally be getting round to developing what Canon call 'ring USM' - the SDM they've been using up until now works the same as the 'micro motor USM' which Canon only put in their cheaper lenses. Faster would be nice, but reliable is the more important aspect for Pentax's image.
Actually it isn't since the ring USM is still a ultrasonic motor, this patent is of an electric motor, looks like something used in maglev trains Sounds like Pentax might finally be getting round to developing what Canon call 'ring USM' - the SDM they've been using up until now works the same as the 'micro motor USM' which Canon only put in their cheaper lenses. Faster would be nice, but reliable is the more important aspect for Pentax's image.
Comment by Anvh posted on New sdm = dc (see patent) at 21/09/2010 - 19:54
too bad
I can't help you further either.
I could see if someone on Deviantart wants to help you?
I can't help you further either.
I could see if someone on Deviantart wants to help you?
Comment by Anvh posted on turn off DFS with your K20D and K7 at 21/09/2010 - 19:46
Why don't you download the files and see if they work? link
For the K20D you need to copy these file to the SD card.
- MODSET.442
- SYSPARAM.TXT
Than
- open the SD card door
- press and hold delete when turning the camera on
Than you get a menu and you need to enable the debug menu by doing this:
- Press right key to change DIS to EN on the DEBUG MODE line.
Press OK
That should be it.
For the K20D you need to copy these file to the SD card.
- MODSET.442
- SYSPARAM.TXT
Than
- open the SD card door
- press and hold delete when turning the camera on
Than you get a menu and you need to enable the debug menu by doing this:
- Press right key to change DIS to EN on the DEBUG MODE line.
Press OK
That should be it.
Comment by Anvh posted on turn off DFS with your K20D and K7 at 20/09/2010 - 21:47
Doug, maybe something like this?
link
link
Comment by Anvh posted on Shutter Blur on K7 at 20/09/2010 - 21:10
But you seem to agree with me on what I'm talking about though.
More bits truly only means it holds more information though.
Like you said that information can be used to extend the dynamic range but it can also be used to have a higher quality.
All I'm saying is that more bits doesn't automatically mean more dynamic range.
If you for example have 8 bit photo that means each pixel contain 256 colours/graduation and since we use RGB so 3 colours that means a photos can have 16.777.216 colours.
If the dynamic range is small than that means all those colours are very close together so you've huge quality so very smooth graduation but with high dynamic range the colours are further apart so that means the graduation is less smooth.
To show what it means from going from 12bit to 14bit here is a comparison
12bit = 4096 graduation/shades per pixel = 68.719.476.736 different colours in one photo.
14bit = 16.384 graduation/shades per pixel = 4.398.046.511.104 different colours in one photo