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> How to convert a pic to B & W?    
 
   
zocker
post Sep 4 2008, 04:11 PM
Post#1


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From: Bristol / Ipswich / Spain


Whats the easiest way to convert a colour .jpg to Black & White?
Thanks
Z
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DougY
post Sep 4 2008, 04:16 PM
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From: Seattle, WA [USA]


Hi Z,
ost image editors have that as one of the options... what program are you using?
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doctor9
post Sep 4 2008, 04:58 PM
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From: Wisconsin


The easiest way:
pen the file in Microsoft Office Picture Manager (You probably just need to right-click the image file and select Preview for this).
From the menu, select Picture->Color
Slide the Saturation slider all the way to the left.
Save the file.
...
If you want higher quality, and have patience and a copy of Photoshop:
Open your file, and click on the photo layer to select it
Click the New Adjustment Layer icon (the half white/half black circle)
Select Channel Mixer
In the dialog box, check "monochrome" and "preview" checkboxes
Set the Output Channel to Gray
Now the artistic bit: slide the Red/Green/Blue sliders around, but make sure they total somewhere around 100%. If they total more, they picture will wash out. For a darker photo, make the values lower, of course. With some practice, you can make certain elements "pop" dramatically by adjusting the sliders around to favor certain color values. Plus, you retain all of the original color information, so you can change these settings later on.
Dennis
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CyberCow
post Sep 4 2008, 05:26 PM
Post#4


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Joined: 27-April 02
From: Upper MI


In Photoshop, once the image is loaded: Shift+Ctrl+U
GIMP is free to download . . . Once installed and the image loaded; right=click the image and select: Colors then Desaturate then Average then click the Desaturate button.
hope this helps
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zocker
post Sep 4 2008, 05:29 PM
Post#5


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From: Bristol / Ipswich / Spain


Thanks ALL I dont have any grafix progs, so I'll have a try at GIMP.
Thanks again you're a great bunch of people!
Z
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dannyseager
post Sep 4 2008, 05:37 PM
Post#6


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From: Leicester, UK


Or use Picnik to edit yout pics online
http://www.picnik.com/app
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CyberCow
post Sep 4 2008, 06:13 PM
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From: Upper MI


Danny, that's one kewel link! sad.gif
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KingMartin
post Oct 2 2008, 03:51 PM
Post#8


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From: Prague,CZ / Kiev,UA


Hello James (and everybody),
know that my contribution is a little bit off target, because you asked for a free tool. Unlike Mark, I am using PS only since its 5th version. The reason why I am using CS3 is because it works with the Camera Raw 4.5 plug-in, and I like the extra tweaks it has to offer.
Desaturation works well, but it will not give your picture the contrast typical for BW shots... there are more or less sophisticated ways how to change a color photo to a BW one - here's what I usually do:
Oopen the color photo and add a new adjustment layer, Gradient Map, gradient Black to White, and perhaps lower its opacity a little bit if the effect is too extreme (on the low-quality photo in my sample attachment it was).
Then I add another adjustment layer, this time Chanel Mixer, and check the Monochrome checkbox.
Now, I lower the Constant slider a little bit for extra contrast, and play with the channel controls. Usually, I boost red (with persons), lower green, and carefuly slide blue as far as possible. In my example, I had to be careful so that the girl's arm doesn't dissolve into the bright wall...
In my example, there's original, desaturated, and channel-mixed shot.
My two cents
sad.gif
Martin
Attached File(s)
Attached File  Ira.zip ( 215.46K )Number of downloads: 11
 
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bennyp
post Feb 24 2011, 05:58 AM
Post#9



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ImageMagick would do it from command line
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WildBird
post Feb 24 2011, 06:07 AM
Post#10


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Joined: 19-August 03
From: Perth, Australia


Picasa - free, easy. But you could also just print it out on a dot matrix printer, then it will be black and white :-)
WIW - tried GIMP, couldnt work it out, Picasa on other hand, so easy (from google, so they have one or 2 people who can work on it!)
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