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chrisatlemon says

Hi all,

I’ve created a new item with various quite elaborate backgrounds that have loads of layers with gradients, transparencies, brushes etc to create an abstract scene.

Now I created this in 16-bit, but a 16-bit A4 page with some smart objects on top is 350 MB in size. For a four-page item, even compressing at the highest rate I can never get this into 600 MB.

So, should I separate this into several items? It is a drinks menu item, so I could have an A4 and a US letter version. However I don’t think this would be good for sales. I usually include A4 and US letter in one item.

Should I reduce to 8-bit? Then it would fit the 600 MB upload limit. But obviously it will only be 8-bit. Personally I don’t notice the difference looking at it, the background is flattened in any case.

I did read that an a quality print you can see the difference between 8-bit and 16-bit.

What do you suggest? Ideally I would like to include A4 and US letter in the same package.

Cheers

Chris

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quickandeasy says

Have you tried turning off the layers? As you can see by the following screenshot, simply turning off the layer visibility reduced the file size by 10mb

Depending on the files you can get much bigger reductions, sometimes up to 25%

Also, where possible, you should rasterise and merge unnecessary layers.

It’s all well and good leaving the file to be as editable as possible, however for things like brushes and small elements which have little flexibility anyway, merging them to save file size over being editable can be a better option.

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chrisatlemon says

Thanks Q&E :)

Yes, all layers made invisible and no editable layers left, all rasterised, except for the most necessary smart object (which do not actually contain any images.

Basically each file is 4 rasterised backgrounds plus text and smart objects which only contain a placeholder layer.

The problem is that one A4 16-bit layer at 300dpi is around 70MB file size.

So if I have a menu file with A4 and US letter sizes, front and back, four different backgrounds in each … it’s pure maths: I can’t really go any lower than what I have achieved.

Grmbl … I guess I’ll just deliver in 8-bit :( I feel that otherwise my product is not complete. I do not want to remove 2 colour versions (which are way more differences than just the colour) and I do not want to remove either A4 or US letter … So biting the bullet on 16-bit probably makes the most sense…

Unless anyone tells me that there would be a great loss in terms of print quality.

Cheers

Chris

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AbdullahShafiq says

You can follow this awesome active thread it helped me a lot : http://graphicriver.net/forums/thread/authors-how-to-keep-mockups-filesize-small/86854

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chrisatlemon says

hi, many thanks for the tip!

I have already applied all of these techniques.

I think my basic problem is that a 16-bit A4 image at 300dpi is around 70 MB in size. I don’t think there is anything that can be done to reduce this it unless I compressed image.

So the question really is: how much print quality will I use if I go down to it 8bit? On-screen I cannot see any difference between the two flattened files: 16-bit and 8-bit.

So I’m wondering how much difference there may be in terms of Print quality?

Thanks again

Chris

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AbdullahShafiq says

I don’t know what kind of upload limit your talking about, I never faced any problem with uploading size limit but If you have any issues with uploading a file use FTP service. Am I missing anything here !

http://support.envato.com/index.php?/Knowledgebase/Article/View/326
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chrisatlemon says

You are :)

The upload limit per item is 600MB!

Cheers

Chris

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AbdullahShafiq says

You are :)

The upload limit per item is 600MB!

Cheers

Chris

Why I aren’t able see this limit in guide lines in Upload instruction of Graphic River that’s strange, See http://support.envato.com/index.php?/Knowledgebase/Article/View/334/ can you please send me the link where you saw that 600 mb limit !

Thanks, A

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chrisatlemon says

Aha! Actually it seems this was changed. It used to be 600MB – looks like they upped it to 1GB:

“For files over 500MB we recommend uploading via FTP. The maximum file size allowed is 1GB.”

Awesome :)

Still, question remains: how much quality do I lose when converting a flattened 16-bit background back to 8-bit?

Cheers

Chris

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AbdullahShafiq says

Aha! Actually it seems this was changed. It used to be 600MB – looks like they upped it to 1GB:

“For files over 500MB we recommend uploading via FTP. The maximum file size allowed is 1GB.”

Awesome :)

Still, question remains: how much quality do I lose when converting a flattened 16-bit background back to 8-bit?

Cheers

Chris

See if this will help you : http://www.theartofretouching.com/blog/photoshop-cs5-5-tutorial-difference-between-8bit-16bit-color-space

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