Raw Format on M9/M9P/ME

bubu

Honrts 發表於 2014-5-28 00:20
Bubu Ching，我想我誤會了你的意思，我也是用MM，我在ASM Setup裡全on，跟著在compression裡選DNG，影了數 ...

我没有将ASM全開，便发生了关机后要再set的情况。

將ASM全开有什么作用呢？

raumplan

I am so keen to understand the difference is shooting RAW and DNG too

Honrts

bubu 發表於 2014-5-28 11:04
我没有将ASM全開，便发生了关机后要再set的情况。

將ASM全开有什么作用呢？ ...

我現在都在INTERNET尋有關資訊.

Honrts

raumplan 發表於 2014-5-28 11:07
I am so keen to understand the difference is shooting RAW and DNG too

我懷疑如用DNG, 只可用14BIT, 但如用RAW, 就可由0BIT 至15 BIT自由調校.

wesley

First, what is the file camera storing in SD card after selecting "RAW" format? Is that able to open in Lr/PS?

M8 "RAW" need convertor
M8 Raw convertor

raumplan

another dumb question from me....

if after playing around and could not get things right, can we press the "Reset" button from the normal menu to restore things back to original?

bubu

wesley 發表於 2014-5-28 11:55
First, what is the file camera storing in SD card after selecting "RAW" format? Is that able to open ...

My initial trial on MM was that the file stored in SD card is RAW not DNG.
When open in PS, it's RAW as well.

But I did find a thin, vertical bright line in the RAW picture I tested when enlarged to over 60% onward.
It's explained in the website you provided the link.

Since the picture quality of both my test files doesn't present visible difference on a B/W image, I personally will not bore to select RAW instead of the camera's default, DNG.

vincecharus

Can any c-hing enlighten us on the difference between M9(P)/MM/ME RAW and DNG?

If RAW is the better format, why is default factory setting in DNG?

Thanks in advance!

toys_madman

Honrts 發表於 2014-5-28 02:39
概括說，RAW是所有原始檔的統稱，DNG是所有原始檔其中一種format。

http://en.wikipedia.org/wiki/Raw_ima ...

呢樣我明, 亦係我一直理解0既...唔到牌子, 甚至唔同MODEL都有唔同RAW0既FORMAT, 但係我唔明而家講緊, 好似M9可以SAVE另一重RAW FILE, 咁我想知係咪有唔同...

bubu

@raumplan:

By turning off the camera, this "magic" setting is gone and the camera resumes to "normal".

Honrts

toys_madman 發表於 2014-5-28 13:21
呢樣我明, 亦係我一直理解0既...唔到牌子, 甚至唔同MODEL都有唔同RAW0既FORMAT, 但係我唔明而家講緊, 好 ...

M9要在ASM setting 把0bit至15bit開了，才可在compression裡選RAW，JPGRAW及JPGASM，一般M9影DNG好像是14Bit，但如選RAW可以去到16Bit，我想分別是在這裡。

Lips

Honrts 發表於 2014-5-28 13:40
M9要在ASM setting 把0bit至15bit開了，才可在compression裡選RAW，JPGRAW及JPGASM，一般M9影DNG好像是14B ...

Sure?
但M9當日好似sell 自己16bit的？

bubu

vincecharus 發表於 2014-5-28 12:39
Can any c-hing enlighten us on the difference between M9(P)/MM/ME RAW and DNG?

If RAW is the better ...

This may help:
http://www.beyondmegapixels.com/2012/01/raw-vs-dng/

If what said in this site is correct, it explains why the RAW file from my MM has no IQ difference with DNG.
1) The difference between DNG and RAW is only metadata.
2) The software I used, Adobe Camera Raw, while opening, already converted the RAW file into DNG to appear on screen.

Honrts

Lips 發表於 2014-5-28 13:49
Sure?
但M9當日好似sell 自己16bit的？

所以現在正在調查中.

Honrts

Lips 發表於 2014-5-28 13:49
Sure?
但M9當日好似sell 自己16bit的？

同埋DNG一定係14/16BIT, 但RAW, JPGRAW, JPGASM好像可以自選由0bit 至15bit. 但如果假設選 1bit, 4bit, 9bit 關上, 不知效果如何.

bubu

wesley 發表於 2014-5-28 11:55
First, what is the file camera storing in SD card after selecting "RAW" format? Is that able to open ...

This site illustrates there are more dark area details on a 14-bit RAW file.

The concern is whether an average monitor can show such details.

As I said in earlier post, to be able to shoot RAW on my MM has no practical meaning since my monitor is average and my software/workflow is Adobe Camera Raw -> Bridge -> CS5.

Perhaps, if one uses other RAW converter, they may find the difference.

vincecharus

Adobe explains RAW converter

The footnotes of Bubu c-hing's link above directed me to this document.

wesley

bubu 發表於 2014-5-28 14:08
This site illustrates there are more dark area details on a 14-bit RAW file.

The concern is whethe ...

It is not easy to discover the difference by working on a 16bit RAW. PhaseOne digital back output file is 16bit RAW, you can usually "feel" the difference by leveling, push curve, highlight/shadow recovering...

I would say it's a long term exploration and experiment. Also it depends on how you handle the extreme black/white when taking the shot.

I tends to believe the secret "RAW" format will retain more bits of information. Back to the basic, will that extra bits.... really need/meaningful to your shots?

bubu

vincecharus 發表於 2014-5-28 14:10
Adobe explains RAW converter

The footnotes of Bubu c-hing's link above directed me to this document ...

This is a great article, easy to understand for a tech layman like me.

bubu

wesley 發表於 2014-5-28 14:17
It is not easy to discover the difference by working on a 16bit RAW. PhaseOne digital back output  ...

Exactly.

Money not spent is not money.
Details not seen are not details.