WB Before and After shooting - RAW

Started Feb 25, 2007 | Discussions
Julia Borg Veteran Member • Posts: 7,280
Re: What is UniWB

digitall wrote:

Julia, could you clarify something? When the UniWB is uploaded to
the camera (D2X in my case) this becomes the current preset (D-0).

you can use NC/CameraControl to record it as any pre-set. or, you can copy UniWB from a NEF/JPG image taken with UniWB to d1-d4 presets.

And in Nikon
Capture the white balance has to be carried out by using the Set
Grey Point from the drop down menu and selecting a neutral grey in
the image.

yes. alternatively, you can take a setup image with Auto WB, or presetting WB from grey card/expodisk/etc. and use NC to copy white balance from setup image to actual shot.

-- hide signature --

Julia

DaveHutch Senior Member • Posts: 2,001
Re: WB Before and After shooting - RAW

I must admit, NC showed no differenc that I could make out.
However, due to NC's awful speed and GUI, I use ACR more than anything else.
--
Dave H
I can only help one person each day...
...and today is not your day!

(tomorrow doesn't look good either!)

 DaveHutch's gear list:DaveHutch's gear list
Fujifilm X-T3 Fujifilm X-T5 Fujifilm XF 35mm F1.4 R Fujifilm XF 18-55mm F2.8-4 R LM OIS Fujifilm XF 55-200mm F3.5-4.8 R LM OIS +4 more
Julia Borg Veteran Member • Posts: 7,280
Re: WB Before and After shooting - RAW

DaveHutch wrote:

I must admit, NC showed no differenc that I could make out.
However, due to NC's awful speed and GUI, I use ACR more than
anything else.

I do not have problems with NC GUI. NC is very close to what I think raw converter should be. it is coded around true raw adjustments, with minimal amount of useless bells and whistles. Nikon's problem with NC is being very secretive about raw. that is why the majority of users do not understand NC and its GUI.

ACR has several disadvantages, mainly when it comes to raw engine quality. NC is sharper, easier with color, more true to tonality reproduction, and actually better (at least with my cameras) at noise.

-- hide signature --

Julia

digitall Senior Member • Posts: 2,223
Re: What is UniWB

Thanks Julia, I will be very interested to experiment with this. Our Australian daylight is so intense that anything which assists with attaining precise exposure will be of great benefit. I expose for the highlights but the sacrifice at the shadow end is extreme. Nikon Capture seems to be excellent for RAW conversion but I found Bibble best for retrieving 'lost' highlight detail (much too complex an interface to suit my needs so I didn't buy it). NC seems merely to substitute a light grey for the highlights when using the Highlight/Shadow tool.

Julia Borg wrote:

digitall wrote:

Julia, could you clarify something? When the UniWB is uploaded to
the camera (D2X in my case) this becomes the current preset (D-0).

you can use NC/CameraControl to record it as any pre-set. or, you
can copy UniWB from a NEF/JPG image taken with UniWB to d1-d4
presets.

And in Nikon
Capture the white balance has to be carried out by using the Set
Grey Point from the drop down menu and selecting a neutral grey in
the image.

yes. alternatively, you can take a setup image with Auto WB, or
presetting WB from grey card/expodisk/etc. and use NC to copy white
balance from setup image to actual shot.

-- hide signature --

Julia Borg Veteran Member • Posts: 7,280
Re: What is UniWB

digitall wrote:

Our Australian daylight is so intense that anything which assists
with attaining precise exposure will be of great benefit.

then use magenta gel filter CC40m in front of the lens, additionally to UniWB.

one of the factors that prevent shadow separation is flare. try to use deep hoods.

-- hide signature --

Julia

DaveHutch Senior Member • Posts: 2,001
I agree that it's the highest quality convertor of the two...

...but my main problem with it is it's speed.

The fact that ACR shows almost realtime adjustments to thumbnails and preview images is excellent.

If I copy settings from one image and paste them into thumbnails in a multi-image window in NC, the other thumbnails don't even update! I think that's rubbish frankly.

Also, ACR runs at a decent speed on my laptop and Nikon crawls along and eats all of my RAM at the same time. Also rubbish.

I have a P4 2.8 with 1GB RAM (full up) and I really expected not to have to be considering a brand new laptop just to run NC.

It does give the best results (generally), but the highlight reccovery is still behind ACR in terms of subtlety ( the transitions seem very fake and polarized) and I really have problems with the noise.

How would you approach taming the noise if you're shooting low light moving subjects in a club, so let's say you're stuck with 1600 ISO 1/80th at f2.0.
I haven't found a way yet and your advice would be welcomed.
--
Dave H
I can only help one person each day...
...and today is not your day!

(tomorrow doesn't look good either!)

 DaveHutch's gear list:DaveHutch's gear list
Fujifilm X-T3 Fujifilm X-T5 Fujifilm XF 35mm F1.4 R Fujifilm XF 18-55mm F2.8-4 R LM OIS Fujifilm XF 55-200mm F3.5-4.8 R LM OIS +4 more
digitall Senior Member • Posts: 2,223
Re: What is UniWB

Yes, I'll have to try the CC40m, haven't got one but this sounds interesting. I always use deep lens hoods and really don't encounter flare often but exposing for extreme highlights does tend to lose the shadows but PS CS2's Highlight/Shadow facility does a wonderful job. Thanks for your advice.

Julia Borg wrote:

digitall wrote:

Our Australian daylight is so intense that anything which assists
with attaining precise exposure will be of great benefit.

then use magenta gel filter CC40m in front of the lens,
additionally to UniWB.

one of the factors that prevent shadow separation is flare. try to
use deep hoods.

-- hide signature --

digitall Senior Member • Posts: 2,223
Re: I agree that it's the highest quality convertor of the two...

I use a Pentium IV 2.4 gH with 1 gig of RAM and the whole thing grinds to a halt after processing a few images but this is not just because my computer is inadequate, it is also because I have PS CS2 and Nikon Capture and a viewer open at the same time. When I used a new computer in London last year which had an Athlon 3500+ processor with 2 gigs of RAM I had no problem at all. I appreciate your frustration but these are big programs which need fast processors and loads of RAM & money, money, money...
--

tpf1952 Regular Member • Posts: 268
Re: WB Before and After shooting - RAW

Julia,

I stand corrected. I misundertood the question, but frankly, as rephrased, I must confess that I don't know the answer.

I'lll find out, though.

You were civil. I appreciate it.

Tom
--
Tom F.
Raleigh, NC

Julia Borg Veteran Member • Posts: 7,280
Re: I agree that it's the highest quality convertor of the two...

How would you approach taming the noise if you're shooting low
light moving subjects in a club, so let's say you're stuck with
1600 ISO 1/80th at f2.0.

maybe you are underexposing.

my Nikon cameras are loaded with UniWB and linear "custom" curve. that allows to see histogram that actually reflects raw data and thus to judge exposure better.

I do not bump exposure in camera, instead I push in processing raw (but not with ACR of course, ACR eV compensation is non-linear and brings too much noise). D2X is staying at ISO 320

my LCDs are marked with eV to know how much to compensate.

I have hot mirror filters on the lenses to prevent chromatic noise in shadows which is caused by IR contamination.

raw converter I use is much slower then Nikon Capture, but less noisy.

before I started to use all of the above I was shooting parties with 1D, but was not satisfied with color and details at high ISO settings.

yesterday I received S5 which from the first shoot shows a lot of promise in low light. but it focuses slower then I like and fps is also lower then what I'm used to.

maybe to use pro cameras we need more expensive computers. 1Gb RAM may be not enough even to run WinXP in an efficient manner.

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Julia

Henrik Hedlund Regular Member • Posts: 120
Re: NearUniWB for which converters?

Julia, how about Bibble; which one of the two UniWB presets are best there?

Thanks,
Henrik

Tom Christiansen Senior Member • Posts: 2,239
marked LCDs

Julia Borg wrote:

my LCDs are marked with eV to know how much to compensate.

What does that mean?

-- hide signature --

tom

Julia Borg Veteran Member • Posts: 7,280
Re: marked LCDs

my LCDs are marked with eV to know how much to compensate.

What does that mean?

like a ruler:)

used a permanent marker on the LCD cover to make eV marks

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Julia

Robin Casady Forum Pro • Posts: 12,898
Any problems using NearUniWB with NX?

I'd like the option of choosing my converter after shooting. If I use NearUniWB, is there any problem with conversion in NX?

Thanks.
--
Robin Casady
http://www.robincasady.com/Photo/index.html

Kerry Pierce
Kerry Pierce Forum Pro • Posts: 19,757
thanks a ton, Julia

I appreciate all the effort you've put into this. This is very cool stuff.

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my gallery of so-so photos
http://www.pbase.com/kerrypierce/root

 Kerry Pierce's gear list:Kerry Pierce's gear list
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Brian OReilly Contributing Member • Posts: 771
What converter do you use Julia?

Julia

Thanks as always for your thought provoking contributions to this site...

You state:
"raw converter I use is much slower then Nikon Capture, but less noisy."

May I ask what converter you use

Brian

Henrik Andersson Senior Member • Posts: 2,454
D2x

Julia Borg wrote:

the idea is as following. white balance is essentially 2
multipliers which are used to equalise sensitivity of red and blue
channels to the sensitivity of green channel. those multipliers are
dependent on the light spectrum (color of light), so they are
variable. because they are applied to raw data after conversion to
digital, there is no point in using them in camera.

This is true for most cameras but is it true for the D2x ?

Doesn't the D2x have a seperate amplifiers for the red/blue channel and the green channel and they are used partly in the whitebalance settings ?

The mix between the red and blue still have to be done in the normal digital fashion.

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Henrik

RomanJohnston
RomanJohnston Forum Pro • Posts: 18,865
Thanks VERY much...cool stuff!!!! (NT)
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What will I be given today, and will I be open to see it?
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Zewt Regular Member • Posts: 437
Re: another way, no NC needed

I find this very intriguing.

Now I just need a small CF card to carry around the uniwb image file.

How long will the preset's in D1,2,3, etc. stay without being cleared? I have never used them before.

Raul Veteran Member • Posts: 8,616
Hello Zewt

Zewt wrote:

I find this very intriguing.

it is not.

Now I just need a small CF card to carry around the uniwb image file.

That is not the way it works: you have to load the uniWB in the image into one of the presets of your camera using Nikon Capture 4 (will not work with NX). Then, every time you want to use uniWB you select the corresponding preset.

How long will the preset's in D1,2,3, etc. stay without being
cleared? I have never used them before.

They stay as long as you do not replace/delete them.

Kind regards

Raul

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