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vdotmatrix
Joined: 06 Jun 2009
Posts: 3
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 Posted: Sat Jun 06, 2009 9:04 am Post subject: psd file large-jpg file very small |
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i created a document 12x18 which will a jpg poster in the end.
i saved the psd file which was about 12MB (good).
Then I saved as jpg and to my horror this jpg is only 355kb...it will never blow up to 12x18.
can anyeone help? |
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iDad
Joined: 22 Feb 2009
Posts: 767
OS: iMac 24" 1TB harddrive OS10.5.6
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| Posted: Sat Jun 06, 2009 9:22 am Post subject: |
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you always lose with jpg but you beable to save it as a bigger file than that.When saving as a jpg you should have an option to increase or decrease size or save as png |
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rogermota
Joined: 05 Jun 2009
Posts: 63
Location: London
PS Version: CS4
OS: OS X 10.5.6
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| Posted: Sat Jun 06, 2009 9:26 am Post subject: |
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vdotmatrix
Joined: 06 Jun 2009
Posts: 3
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| Posted: Sat Jun 06, 2009 10:05 am Post subject: |
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| rogermota wrote: | from 12mb to 355kb means there's a heck of a lot of compression going on. You can set JPEG compression from 1 to 12. Try 10 if size is somewhat of a concern, 12 if it's not. JPEG will always compress to much smaller than a PSD (especially if you have multiple layers).
As long as you're not resizing the image, you dont have to worry about your 12x18 image not "blow up" to 12x18 as the physical dimension hasn't been changed. |
When I created the document I had the resolution set at 72 dpi.
I have since bumped it up to 300dpi and my blood pressure has gone back down to 100...
Man a simple little setting almost caused me to stroke out.
thanks |
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rogermota
Joined: 05 Jun 2009
Posts: 63
Location: London
PS Version: CS4
OS: OS X 10.5.6
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| Posted: Mon Jun 08, 2009 1:26 am Post subject: |
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vdotmatrix
Joined: 06 Jun 2009
Posts: 3
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| Posted: Mon Jun 08, 2009 4:48 am Post subject: |
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| rogermota wrote: | Ahh I see. So your whole document was created on 72 dpi, then you bumped it up to 300? Usually it's not a good idea to do that as Photoshop will have to make up the extra information. This means that, for example, details in a photo will become soft and blurry.
Always stick with 300 dpi when doing any work that's for print. |
This is very useful to know. Always start with high resolution and then START OVER instead of just bumping up the resolution and trying to take the easy way out. Makes sense.
BUT, even when I started with ,psd file that was about 30MB, the resulting JPG was only 2.5 MB. Any Ideas or suggestions?
thanks for taking the time to respond!! |
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rogermota
Joined: 05 Jun 2009
Posts: 63
Location: London
PS Version: CS4
OS: OS X 10.5.6
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| Posted: Mon Jun 08, 2009 5:53 am Post subject: |
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