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Phill D
12th March 2013, 08:34 PM
Tried to grab a quick shot of a little purple house plant that was looking quite fresh the other day. Imagine my suprise when it came out looking like this.

http://e-group.uk.net/gallery/data/500/P3103778_auto_WB.JPG (http://e-group.uk.net/gallery/showphoto.php/photo/58573)
It was even bluer on the LCD screen.

So for someone who only ever uses auto WB and thought it was fine a brief trial and error education.
First I tried cloudy WB and got this.

http://e-group.uk.net/gallery/data/500/P3103779_cloudy_WB.JPG (http://e-group.uk.net/gallery/showphoto.php/photo/58574)

Better but still too blue. So I tried shadow WB ( a little house symbol with a cast shadow) and got this.

http://e-group.uk.net/gallery/data/500/P3103780_shadow_WB.JPG (http://e-group.uk.net/gallery/showphoto.php/photo/58575)

The closest to the real thing I got but a little bit too far and ever so slightly too much pink now. All posted as from the camera.

So what is the right thing to do? Off to try google and see what I can find but if anyone is willing to contribute to my education and suggest how I can get my E510 to show purple correctly I'd be very grateful.

Finally here's a bit more of a close up to finish off. A bit of a contrast tweak in Picassa but still a bit too pink using the shadow WB setting.

http://e-group.uk.net/gallery/data/500/P3103799_-_Copy.JPG (http://e-group.uk.net/gallery/showphoto.php/photo/58576)

gphemy
13th March 2013, 03:51 PM
That doesn't come as much of a surprise, Phill, I have had much the same experience with bluebells - and generally with red flowers too. If you have Photoshop or some such, can I suggest you look at the individual colour channels, as it may be that one channel (only one) is overexposed, leading to colour shifts which cannot easily be rectified by a change to the WB/colour temperature setting.

Piers

Imageryone
13th March 2013, 04:05 PM
I have the same problems on the E-1 and E-330 with reds and purples.I find that turning down the Exposure control by .7 helps, but still have to work in channels to get spot on.

I got hold of a Paint Colour sampler, helps to match the colour with that, then you can compare as you edit.

Swordfish
13th March 2013, 05:42 PM
Notoriously difficult colour to get right.

Best bet is to shoot in RAW and set a custom WB using a grey card, or a white one if you don't have grey. This will help get as close as possible for starters, but then as has already been suggested some further tweaking of individual channels may still be necessary.

Martin

OlyPaul
13th March 2013, 05:46 PM
Notoriously difficult colour to get right.

Best bet is to shoot in RAW and set a custom WB using a grey card, or a white one if you don't have grey. This will help get as close as possible for starters, but then as has already been suggested some further tweaking of individual channels may still be necessary.

Martin

Plus 1....the E-1 and E-510 are lot better at purple than than the E-620 and E-30 Phill.

Phill D
13th March 2013, 08:37 PM
Thanks guys looks like time for some experimentation. It's suprising that the newer cameras are even more off than the old E510.

David M
13th March 2013, 10:33 PM
I've always suspected this problem is related to the one experienced by film users shooting flowers (and other subjects) where accurate colour was needed. One suggested reason was the various film stocks response to UV compared to the human eye. Film shooters chose a suitable film and lighting conditions to get as accurate colour as possible.