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Max resolution I can use in CS2?
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imkalah

Joined: 21 Feb 2012
Posts: 7



PostPosted: Tue Feb 21, 2012 8:20 pm    Post subject: Max resolution I can use in CS2? Reply with quote

Hi, I just have one simple question. What factors determine the maximum resolution I can make an image? I don't need to print it, I just need to make the ppi as high as I can because I want a very large canvas to play with.

I'm not a noob, so don't feel like you have to dumb it down. I've just never needed to do anything high resolution.
I'm hoping it's possible to make something at least 100,000ppi, so if you could at least let me know what the deciding factors are for max resolution I can figure it out from there.

Thanks,
Kalah
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thehermit

Joined: 05 Mar 2003
Posts: 3987
Location: Cheltenham, UK


PostPosted: Tue Feb 21, 2012 8:40 pm    Post subject: Reply with quote

Welcome to the forum.

Quote:
I'm not a noob,


Perhaps your understanding is not all it could be. If you are not going to print then PPI/DPI has no meaning. If you want to create files that have no practical use in PPI or no use in reality, it's going to be tough to advise you.

If you search across the forums for PPI/DPI and the like or ask another more pertinent question, you may get a different answer (or what you want). I can't say without you being more specific.

If you are designing for the web, 1, 2000, or 500'000 it makes not difference. Resolution is not dependant of internet.

If you need me to trawl the archives of the forum for you, then give me a few days or more :)

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imkalah

Joined: 21 Feb 2012
Posts: 7



PostPosted: Tue Feb 21, 2012 8:51 pm    Post subject: Reply with quote

thehermit wrote:
Welcome to the forum.

Quote:
I'm not a noob,


Perhaps your understanding is not all it could be. If you are not going to print then PPI/DPI has no meaning. If you want to create files that have no practical use in PPI or no use in reality, it's going to be tough to advise you.

If you search across the forums for PPI/DPI and the like or ask another more pertinent question, you may get a different answer (or what you want). I can't say without you being more specific.

If you are designing for the web, 1, 2000, or 500'000 it makes not difference. Resolution is not dependant of internet.

If you need me to trawl the archives of the forum for you, then give me a few days or more :)


Thanks for your reply! You're right, I've never looked into ppi more than the basic 75 for web/300 for print (i think?) I just had a really great idea earlier and I thought that was the thing that would make it happen. Maybe I just need to make the canvas size very very big and zoom in. I just don't want it to get distorted when I'm zoomed in really close because I want to make the tiny parts very detailed.
I probably should have made that my question but I wasn't sure how to explain it before. Do you have any advice?
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thehermit

Joined: 05 Mar 2003
Posts: 3987
Location: Cheltenham, UK


PostPosted: Tue Feb 21, 2012 9:08 pm    Post subject: Reply with quote

One pixel is one pixel. Zoom into 1600%, it will still be a very large single pixel. 75 (presume you meant 72) is still meaningless with a screen output. Don't make your canvas large, just increase the 'zoom'..

I guess I may need to trawl or at least provide some links... This basic explanation? or get the idea? :)

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imkalah

Joined: 21 Feb 2012
Posts: 7



PostPosted: Tue Feb 21, 2012 9:19 pm    Post subject: Reply with quote

Thank you again, I'm going to read those now. I also want to add that I'd also like to be able to project it onto a very large screen at some point, if I can ever get a projector that can do that. I know that's still a screen and not print, but would ppi effect that at all? I just want to cover all my bases so I don't make it then realize I missed one huge thing. You've been really helpful =)
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imkalah

Joined: 21 Feb 2012
Posts: 7



PostPosted: Tue Feb 21, 2012 9:25 pm    Post subject: Reply with quote

I just read the first one and I get it now, neither one has anything to do with how many actual pixels I can view on my screen. Right? lol sorry I didn't know that it literally only had to do with the printer. I think I'll go with just making a very large canvas =)
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thehermit

Joined: 05 Mar 2003
Posts: 3987
Location: Cheltenham, UK


PostPosted: Wed Feb 22, 2012 8:02 am    Post subject: Reply with quote

:)
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jerryb4417

Joined: 20 Dec 2008
Posts: 710
Location: Oklahoma
PS Version: photoshop cs5
OS: win7 pro 64 bit, i7-3.2g, GTS 450,

PostPosted: Wed Feb 22, 2012 4:01 pm    Post subject: Reply with quote

hi imkala,
I have been thinking how to approach your question and one of the problems i had was i didn't know anything about why such a humugus number for ppi ... go stuck on that...

remember ppi is just about how close the pixels are and nothing more...

the biggest determining factor is the pixal deminsions... the larger the deminsions more pixals and then more fine detail you can put in which can result in higher quality depending on how your going to use...
think of a 640x480 picture displayed on a 13" screen , it will look sharp and clear where as on 27" screen that 640 x480 look full, fuzzy unclear ,,, so if viewed on larger screen of course that 640x480 picture needs to have bigger deminsions (possibly 2000x1800 and hense there more pixels ... in oderr for the picture to be sharp and clear and this applies to your grapics...


having the pixels closer can make it easier to edit.. especially real fine details...

so the bottom is that if there a lot of details involved in the image you want large pixel deminsions.....

in ref to that one post about pixel deminsions...
keep in mindthat with extremely large deminsions, that a lot pixels .. and your hard drive, cpu and gpu does a lot of heavy work.. and use a lot computing power when ever you do editing... on my old system sometimes using one of the filters would take ages (maybe minutes) to do where as my newer more powerfull system only take sec's ...
I was sort of suprised in that link thread no one really address the graphic card and how much ram it had and also how ram the system has ... because they insufficent ram can cause issue especiallyif system is sluggish...

bottom line here..
1. if doing large extremely large images, turn off all those background startup programs that frees up regular ram and give you more speed
2. check and see if your card has opengl... if it does make sure it on in both the graphics card properties and in ps .. opengl can handle large images faster...
3. may want to check your ps memory settings on how much ram memory is set aside for photoshop ..

be carefull with this number since the system has to have so much ram for itself...

4. I always suggest do defrag before any large project... system can then handle those large file better... note heavy fragmented system... , a extremely large file and choke it down...

on your question about displaying on a screen... i don't know if your referrring to using a overhead project or a large lcd screen... but a large pixal deminsion... would help...

i hope the above was of some help in clarifying.
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imkalah

Joined: 21 Feb 2012
Posts: 7



PostPosted: Wed Feb 22, 2012 5:59 pm    Post subject: Reply with quote

Those tips were also helpful, thank you!
I have discovered the lag issue with large files, it's not fun at all.
I use a laptop that's 5 years old and really not made for performance with 2gb of ram. I keep all graphic settings minimum and turn of all non-essential services/antivirus/as much vista crap as possible. Today I tried a 100,000 x 100,000 greyscale image and I think it was about 1.3gb, it took a good 10 minutes just to fill it with a color.

It's a good size though so I think I'll stick with that and turn this old laptop to ubuntu (free more space!) and do it on there in the highest resolution gimp allows. I'll just have to make multiple files to make what I want, otherwise I'd need a super computer lol

Thanks again for your help guys =)
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jerryb4417

Joined: 20 Dec 2008
Posts: 710
Location: Oklahoma
PS Version: photoshop cs5
OS: win7 pro 64 bit, i7-3.2g, GTS 450,

PostPosted: Wed Feb 22, 2012 8:27 pm    Post subject: Reply with quote

hi,
a laptop and it 5 years old... might want to check and see if you can 2 more gigs of ram ....that should help performance a fair amount...

something you might check into if you you don't
have a slot for additional ram and that is use your flash drives as a virtual ram.. not sure what the max size of a flash drive you can use as virtual ram.

although virtual ram is slow than regular ram however it faster than working off the hard drives's virtual memory.
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