linco22
Topic Author
Posts: 1285
Joined: Tue Jun 14, 2005 6:16 am

Contrast, Now Dark. B&W Image Help

Mon Sep 17, 2007 5:28 pm

Hi all,

I trust you all had a pleasant weekend? I had this rejected for contrast originally and after adjusting the contrast it's now been rejected for dark. Don't mean to be rude but adjusting contrast in a B&W image will make the blacks more black, thus making it 'dark'. I didn't do a colour version of this because it's rather flat looking.

Any pointers as to how to get this right?

http://www.airliners.net/procphotos/...lmdc6agaspaatportrush080907_02.jpg

Thanks

Colin
 
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jid
Posts: 889
Joined: Wed Dec 01, 2004 7:37 pm

RE: Contrast, Now Dark. B&W Image Help

Mon Sep 17, 2007 8:44 pm

Hi Colin, well the conversion to B&W is not as simple as people would think. There are numerous ways to do it and depending on your original shot will dictact your approach. Your shot is never going to be easy as it will always be very contrasty between the underside of the aircraft and the sky.

If I was to attempt this conversion I would certainly shoot RAW and slightly over expose the image. Then adjust the exposure at the start of processing. This will give you an image with far less noise to start off with. Then do your conversion to mono, maybe you could apply a calculation and see which channel gives you the best results.

Good luck .. Jid
G7EPN is back after 15 years! Operating all Bands 80mtrs -> 70cms QRZ DX
 
garry
Posts: 179
Joined: Mon Feb 20, 2006 9:19 pm

RE: Contrast, Now Dark. B&W Image Help

Mon Sep 17, 2007 10:00 pm

Hi Colin - hope you are well. The shot looks alot better than the version you posted before.

Getting a b&w conversion correct seems to be a difficult skill and as Jid mentions there are numerous ways. How did you make the coversion?

I guess Jid's point relates the various %'s of red, green and blue from the channel mixer function in Photoshop and which combination to use to acheive best effect.

Have you tried a curves adjustment for the mid tones only?

Best wishes
Garry
www.garryridsdale.com
 
linco22
Topic Author
Posts: 1285
Joined: Tue Jun 14, 2005 6:16 am

RE: Contrast, Now Dark. B&W Image Help

Mon Sep 17, 2007 10:28 pm

Hi guys,

Thanks for the replys. Keeping well Garry thanks, hope you are too.

This was a RAW file, edited in Lightroom and then resized cropped etc in PSE V4.0.

Not much in the way of curves adjustment, more on the contrast and a few colour channels to make the B&W look better. Maybe have another look at it when I get home tonight.

Thanks again.

Colin
 
dendrobatid
Posts: 1647
Joined: Sat Nov 06, 2004 3:40 pm

RE: Contrast, Now Dark. B&W Image Help

Tue Sep 18, 2007 3:21 am

Quoting Jid (Reply 1):
Hi Colin, well the conversion to B&W is not as simple as people would think.

Very wise words, surprising coming from Jid really  Smile (sorry Jid, I couldn't resist)

It is not that easy and anyone that could print black and white would recognise that the images are what we used to describe as muddy. Colin comments that there was not much in the way of curves adjustment but that is precisely what is needed. It is an old photographic that (generally) an image should have a full black and a pure white. Take a look at Colin's edit and there is a pure black, but only on the A.net copyright bar which provides a good reference. The pure white is there on the fin but the mid-tones are too compressed. By lifting the curve in the mid tones the sky brightens and the whole image looks better (like moving up a paper grade in printing)
A very quick edit
Big version: Width: 1024 Height: 695 File size: 248kb
Using a curves adjustment, lifting the mid tones

Mick Bajcar
 
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jid
Posts: 889
Joined: Wed Dec 01, 2004 7:37 pm

RE: Contrast, Now Dark. B&W Image Help

Tue Sep 18, 2007 3:58 pm

Thanks Mick Big grin

It is not easy getting the contrast right when working in B&W. As Mick says increase your midtones slightly then on a different layer as slight 'S' curve to correct the contrast,(You could even use a couple of Alpha channel masks, one inverted for really good contrast adjustment).

For mono printing, instead of going up a grade in paper, try a Multigrade paper Big grin
G7EPN is back after 15 years! Operating all Bands 80mtrs -> 70cms QRZ DX

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