Author Topic: "Too embarressed to ask ..."  (Read 3049 times)

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Offline Tony Wells

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"Too embarressed to ask ..."
« on: November 02, 2007, 04:35:11 PM »
I too am trying to produce good B&W digital prints, from both my A100 and D7D, but have got stuck when trying to sort out colour casts. From what I have been able to read on this - always a fatal mistake, to confuse the issue with facts! :-)) - I may have problems with my Gamma settings, despite using Adobe's routines for it, and consequently a very basic and therefore embarrassing question (or tow) .....

I use Windows XP, and an Epson Photoprinter, so if Windows uses a gamma setting of 2.2, as I have read, should my Epson be set to 2.2 as well, rather than the default 1.8 it has always been set at please? Also, should these be varied when working on print scans, negative scans or files downloaded off the DSLR's please?

Many thanks,

Tony.

Offline Stef.

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Re: "Too embarressed to ask ..."
« Reply #1 on: November 02, 2007, 04:44:14 PM »
Tony- colour casts are a common problem when printing- actually a big one. There are only a couple of solutions- and these have little to do with your gamma settings.
a) get a custom profile done for your paper- they really cost little, you'll have it within two days and you will not waste any more paper = the best solution

b) in your printer dialogue: tick greyscale or something similar to black ink only AND then set your contrast to +1/2 and lightness - something as the prints come out lighter than on your screen

If you print with your colour cartridges you will pretty much always have a colour cast unless you spend a long time on your magenta etc. settings in your printer dialogue to tweak the images so they have little colour cast. Another way forward is to sepia tone them, or tone them in any other colour and print them then.
Hope this helps
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Offline Tony Wells

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Re: "Too embarressed to ask ..."
« Reply #2 on: November 03, 2007, 10:46:12 AM »
Thanks for replying Stef, though I seem to have accumulated a wide variety of paper brands, buying whenever I have seen something on special offer, so I need to use it up before settling on just one or two brands and ghaving profiles made for those. In the meantime though, have you any idea what gamma setting I should be using please? Should I go through and set everything to 2.2 with me using Windows?

Tony.

Offline Stef.

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Re: "Too embarressed to ask ..."
« Reply #3 on: November 03, 2007, 11:37:55 AM »
Tony- the "proper" settings are actually NO gamma in the printer dialogue for your printer. Use the following settings (I come from PS CS3 but this works for all)
(1) click file- print
(2) under colour handling- click "Photoshop manages colour"
(3) now and this is VERY important- in the final printer dialogue where you tick gamma 1,8 or 2,2, you HAVE to tick "disable colour management" or in some printer dialogues it says: ICM- click that and then "no colour adjustment"

If you don't do that what happens is: you tweak your image nicely in Photoshop (Elements or whatever) and then if you don't use the setting from above- you are actually telling your printer "now you go and adjust as YOU think it is right"- in other words your printer then uses what ever it thinks is right and it will override your settings. Or in more other words- you colour correct your image and then your printer colour corrects it one MORE time. You don't want your printer to do ANY colour corrections at all!

Colour management is a very complex issue but at the end it is absolutely worth to really learn how to do it. I always tell my students- you got the best cameras, lenses, computer programms and so forth but what is it worth if your final product- as in example your print is @~&%ty?
Anyhow good luck- fon't forget to also set the right paper settings in PS.
Stef.
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Offline Tony Wells

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Re: "Too embarressed to ask ..."
« Reply #4 on: November 03, 2007, 12:32:16 PM »
Thanks again Stef! Just to be arkward, I have been using Paint Shop Pro rather than Photoshop as with trials of CS2 and Elements 6 I got lovely monchrome prints, but a deep shade of blue and white - unintentional cynotypes on glossy paper !!! :-)) Obviously, I do need to persevere with Photoshop however, and suspect that this conflict of colour managers was the cause of my woes.

Tony.

Offline Stef.

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Re: "Too embarressed to ask ..."
« Reply #5 on: November 03, 2007, 12:48:55 PM »
Tony, I teach Photoshop and I have to admit I have not the slightest clue about Paint Shop Pro, but my guess is that it works in a similar way in Paintshop. The important point is that you don't want your image TWICE colour managed. In other words if you change your colours in Paintshop Pro- the printer dialogue is the same for both programms. Play around a bit and make sure that wherever that setting is that you DISABLE colour management in your printer dialogue. Gamma should in my experience not play ANY role at all in the printing process. (Or at least not for me) In the long run it is really advisable to spent a day or two printing the same image on different papers and making up your mind which ones you like. For me for instance- I use Tetenal 272g Spectra Jet Photo Glossy for nearly all my colour prints (sometimes Epsom Premium Glossy). For my black and hwite prints I use either Hahnemuehle or DaVinci. Now I got custom profiles made for all of them- 'cause I am fed up with waisting money on mediocre prints (they are often bad enough with their contents...-:) For TWO custom profiles I pay about £20- DaVinci for instance offers you one for free if you order their paper. These prints are soo much better- I find- and the other day I did a test by downloading the profile from Tetenal's website for my printer and also used the custom profile. While the website profile gave me a black and white print with an intense Magenta cast ...my profile was a clear balck and white print. I guess especially for black and white it is really important as I truly believe that inkjet prints lack the depth of traditional black and white prints. (I have to say here that I have a traditional colour and black and white dark room printing background)

For as long as you have not got a custom profile- I suggest you really try to make a print with balck colour only (might be that you have to tick in your printer dialogue either "greyscale" or "use black ink only" and when you do this make sure you set contrast to at least +1 and lightness to -1 as images that are printed with black ink only tend to get lighter.
Hope this helps
Stef.
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Offline Rob aka [minolta mad]

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Re: "Too embarressed to ask ..."
« Reply #6 on: November 03, 2007, 06:15:47 PM »
I teach Photoshop

You could regret saying that !


Now we all know who to come to with all our problems
(only kidding)



Rob :lol:

Offline Stef.

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Re: "Too embarressed to ask ..."
« Reply #7 on: November 17, 2007, 12:48:16 PM »
;)

Feel free...
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