kit laughlin
Subscriber Member
Thanks jlever; so often I look for the more complicated methods. Perfect.
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Fun with the Lumix 20mm f/1.7 (Image Thread)
- Thread starter Amin
- Start date
biglouis
Well-known member
Outstanding!
Brian Mosley
New member
kit laughlin
Subscriber Member
@ Brian and biglouis: A pleasure; like many here, we shoot what's to hand... and I have been using some of the cat images to learn C1 Pro 6. The local adjustment feature is very interesting; I used it here on her face.
My lady, who has no intrinsic interest in photography, liked this one for its OOF characteristics. I think this lens is simply outstanding. Cheers to all, kl
My lady, who has no intrinsic interest in photography, liked this one for its OOF characteristics. I think this lens is simply outstanding. Cheers to all, kl
mediumcool
Active member
Opened cat pic in C1 5.2 and found it a bit pink (very technical term!).
Used the *white balance* eyedropper on OOF foreground assuming it to be white (tried the window frame first but that made everything a bit harshly cyan).
It’s a lovely lens!
Used the *white balance* eyedropper on OOF foreground assuming it to be white (tried the window frame first but that made everything a bit harshly cyan).
It’s a lovely lens!
kit laughlin
Subscriber Member
Thanks for that; the light in that room is pinkish (wall colour). I would probably make the WB slightly warmer; yours is accurate, but the resulting image is a bit clinical, for me. Cheers and thanks again, kl
mediumcool
Active member
Yes, it’s impossible to know what colours are really like; and there are some funny colour changes running through different areas. I often use the desaturate sponge in Photoshop when faced with odd-colour BGs.
Interesting leftover from my days making duplicate slides and transparencies in the ’70s — my employer stressed that if I was going to have a colour shift, red was the best, followed by yellow; green, magenta, cyan and blue were the worst. Still follow this advice to this day ...
Interesting leftover from my days making duplicate slides and transparencies in the ’70s — my employer stressed that if I was going to have a colour shift, red was the best, followed by yellow; green, magenta, cyan and blue were the worst. Still follow this advice to this day ...
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You can't white balance on white. White contains no color information, so there's no way to determine what needs to be adjusted.
You must white balance on a neutral gray, like a gray card or a cat. :angel:
- Leigh
mediumcool
Active member
Um, the dialogue in Capture One is called WHITE BALANCE, and I clicked on the OOF foreground, as stated (brightness around 150 or so). Not white (255).
I do not work for Phase One so there is no point me asking them to change the dialogue name. It should be called something like *Neutral Balance* ...
The term White Balance was coined long before digital imaging was invented.
Photography did exist before electronic imaging, in case you hadn't heard.
- Leigh
mediumcool
Active member
This is news?
I started photographing in the 1960s, and have made a living from it for over thirty years, working in both analogue and digital. Eek to you too.Photography did exist before electronic imaging, in case you hadn't heard.
- Leigh
:banghead:
kit laughlin
Subscriber Member
Leigh, with respect, you are in error. Any white, or grey, object can be used to assess white balance, providing no channels are blown. The terms "white" or "grey" mean, literally, absence of colour. "Absence of colour" means that no channel is dominant; that is, for any given luminance, all channels will show the same numerical values. Mediumcool used an object expected to be white (a sheet) with a luminance value of ~150, so perfectly suited to this purpose.
Put simply, any white/grey object in a scene can be used this way; the processing program simply ascribes equal values to the RGB channels for the selected object, independent of brightness. This ascription assumes that the white or grey object reflects equal amounts of all three channels, and hence is deemed to be neutral. The result is that any colour cast (in the example in question, light reflected from the walls) is eliminated thereby, giving accurate colours—or, at least, a place to start. HTH, kl
Put simply, any white/grey object in a scene can be used this way; the processing program simply ascribes equal values to the RGB channels for the selected object, independent of brightness. This ascription assumes that the white or grey object reflects equal amounts of all three channels, and hence is deemed to be neutral. The result is that any colour cast (in the example in question, light reflected from the walls) is eliminated thereby, giving accurate colours—or, at least, a place to start. HTH, kl
mediumcool
Active member
Well said, Kit. Let’s keep this thread on track! Thanks, mate.
mediumcool
Active member
Here is another Panasonic 20/1.7 shot from a few days ago, a Portrait of The Artist as [not] a Young Man. My friend was unfamiliar with the camera so shot at 1/200 f5.6 ISO400 — would have been better f2-ish.
Grey balance was pulled from the *grey* hair on the side of the head!
Location: Austral Hotel, Rundle Street, ADELAIDE (nice burgers and Vale Ale)
Grey balance was pulled from the *grey* hair on the side of the head!
Location: Austral Hotel, Rundle Street, ADELAIDE (nice burgers and Vale Ale)
That's correct. But the point about none of the channels being saturated is critical.
White, in the digital sense, means 255/255/255. If the balance is in error, you might have 255/255/250 or some other combination. While it's possible to observe that an error exists, it's not possible to assess the magnitude of the error because you don't know the true value(s) of the saturated channel(s).
If you reduce the channel saturation down to 200/200/200 or any other value(s) below saturation, then an accurate assessment can be made. But the color being evaluated is no longer white, it's gray. This is true even if the original subject is pure white, but under-exposed.
- Leigh
E
ellemand
Guest
Hi all.
I wish you all af happy newyear.
Best wishes
Ellemand
Panasonic GF-1 and 20 mm.
I wish you all af happy newyear.
Best wishes
Ellemand
Panasonic GF-1 and 20 mm.
mediumcool
Active member
Love it! For some reason, the painted meters are especially cute!GF-1 + 20mm
