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04/18/2005 04:51:13 AM · #1 |
I recently reloaded PhotoshopCS onto a different hard-drive but I seem to have a few problems...
I really should do a course or something I keep getting bogged down on simple things like today I have uploaded some RAW images changes the resolution to 300 pixels/inch for printing but when I save either by save as or save for web the saved images default back to 72 pixels/inch ??
I tried to change the preference - units & rules - preset resolution to 300 pixels/inch but made no difference.
If anyone can help it would be greatly appreciated |
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04/18/2005 05:13:01 AM · #2 |
Assuming the image has not been resized downward (in other words, it's still the same pixel dimensions as it started as) then the pixels-per-inch figure is meaningless, all the information is still there. Go to image/image size and look at the info; it will show you how many pixels each dimension of the image is. By default the dimensions etc are linked. If you don't select "resample image" then you can reduce a dimension and watch the pixels-per-inch count rise as the total pixel dimensions stay the same.
I'm pretty sure most RAW output is set by default at 72 ppi, it certainly is on my 5700. So the files show in PS as being like 30 inches on the long dimension, but of course that's silly because 72 ppi isn't enough definition for printing. I can, and soemtimes do, reset to 300 ppi and see the presumptive dimension of the long edge drop dramatically into the 10 inch range, but nothing has really changed, the image is still the same. None of it matters until you actually print.
300 ppi is a very high resolution for printing, btw; most printers can't support it. And on most printers, youc an actually get a REDUCED print quality if you feed them files defined to a higher dpi than they are capable of resolving. They get muddier.
Disjointed ramblings, sorry. May not make sense when I re-read :-)
Robt.
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04/18/2005 05:26:20 AM · #3 |
Thanks Rob it wasn't to disjointed for me.
The images are to be sent as a file upload and printed elsewhere. I just know I have done this before when I had Photoshop CS on another hard drive.
I think I'm missing something very basic when I set it up.
When you change the resolution to 300ppi and save shouldn't it show up 300ppi in your file viewer? I even saved them as jpegs and tiffs but still the same. |
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04/18/2005 05:39:30 AM · #4 |
e-mail one to me, bear_music@yahoo.com. Let me see what I can find out on my side, ok? I can handle pretty big files, btw, in that mailbox.
Robt.
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04/18/2005 06:31:59 AM · #5 |
Originally posted by bear_music:
e-mail one to me, bear_music@yahoo.com. Let me see what I can find out on my side, ok? I can handle pretty big files, btw, in that mailbox.
Robt. |
Thanks Rob
Sent |
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04/18/2005 07:28:40 AM · #6 |
Change the raw setting from 16bit to 8bit. This should solve your problem.
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04/18/2005 07:47:42 AM · #7 |
Originally posted by hdogg4u:
Change the raw setting from 16bit to 8bit. This should solve your problem. |
Thank you, that is it, I new it was something simple.
I was told to do all my adjustments in 16bit but now I realise the 8bit is per channel to give you 16bit in total, is this right?
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04/18/2005 08:48:48 AM · #8 |
You can do all your adjustments in 16 bit but its better to do in 8 bits as you can 8 per channel so works better really.
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04/18/2005 10:08:32 AM · #9 |
| You think it's giving you a hard time now, wait until they integrate Freehand and Dreamweaver and Flash into it ... Adobe is buying Macromedia. |
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04/18/2005 10:29:54 AM · #10 |
| If you do a "save for web" I believe it's always going to change the DPI to 72, because that's screen resolution. It'll make that change since you're intending to use it on the web, as opposed to print. 72 dpi is the appropriate setting for use on the web. |
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04/18/2005 10:36:12 AM · #11 |
It's usually better to convert from RAW using 16 bit/channel (maintains the most information for adjustments). Then, do all your adjustments. Save this in it's current form.
To create your image for upload, convert to 8 bits/channel then do your save as. As far as what PS is giving you for resolution this is irrelevant since the resolution will be determined at print time based on the horizontal and vertical dimensions and the size of print you choose to make.
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