I want to save an image as tiff but when I open it with a viewer (microsoft office document imaging) the colors change and the image is cut in half...is this a problem with the particular viewer ?
well it depends what colour pallete your using in photoshop if you have it set to adobe 1998 you should be fine if your using cmyk or any other profile then the colours will look different from application to application unless you calibrate your colour scheme across all platforms
Is it meant to be greyscale???? I have just opened it up in photoshop and microsoft picture viewer both look exactly the same saved it as jpegs in cmyk and RGB and still all looks the same maybe the problem is at my end but I am not getting any splitting in half or colour changes. Are you using a low end graphics card just asking because you have it set at 16 bit maybe your graphics card can not display it properly maybe try copying it into an 8 bit document but I doubt that would make much difference.
First, windows image viewer (i don't have that image maping but most if viewers works similiar) will show wrong colors because you have cmyk file but viewer try it show as rgb and you can ignore that.
Second, your image is 16bit per channel. Maybe that's a problem. Anyway for printing you need 8bit per channel. Change it by Image/Mode/8bit/Channel. And see if it helps.
here is a screen cap of photoshop vs picture viewer on my screen in cmyk
It looks like you have to change the colour scheme on your windows by right clicking your desktop selecting screen resolution and then as in ppicture below maybe just a reset to default system colours may fix it in the profiles tab.
By the way, where you gone print that?
Total Ink is way to high. Practicly 400%. Than will not end well.
You better convert it to some CMYK profile. Consult people who will print it for which profile is better.
And, of course, change 16bit -> 8bit/Channel.
Theoreticly no, there isn't any limits to size. Practicly, it have to fit paper obviously. Usually it's A4 or A3, max A2.
Your's fit A4 format so no problem with that.
But still i suggest to reduce colors coverage (or how it's in english).
If you'll print on home printer i'm pretty sure you'll get black rectangle with almost visible details. But maybe not
So if it happens then reduce colors by converting it to some profile like U.S. Web Coated (SWOP) 2 (just as example).
Changing to 8bit don't change total ink, cmyk profile don't restrict to have bigger total ink as it theoreticly want to be.
If you make image in cmyk and use layer blending options like multiply etc, it'll produce too much colors at the end.
I will print it on a canvas at a printing store for graphics...I am thinking to printed on A3 size...will I need a re-size on image ?
I opened the info panel for total ink (I don't know the terminology) and the coverage on some areas are up to 393%...the Σ symbol...if I am right about the total...if I follow your advice of changing the profile I'll see the difference just on paper ? because I changed it and the total ink percentage is still the same...
I must say i'm not sure for 100% about that but canvas material is rough so it don't need 300dpi and image can be enlarged without damage.
It don't change physical percentage if you change profile in preferences (that change only how PS show it). You should Edit/Convert to Profile.
But with both of this question best thing is ask at that printing store. They should consult you or give prescription for file format/colors (profile)/dimensions/resolutions and probably something else. Maybe they need RGB file, some of them does.
Same with resizing. Consult with ones who will actually do work. You as customer don't have to know all that specific technic stuff, it's their job
I must admit that some times I get nervous and I want to know everything Your advice put me in place though...
SeniorS...you are a real Senior...I don't know about the S though !!!
many thanks and I hope I find you next time I post a question or we can keep contact via email if this fits with your style of communication