You set the resolution in image>image size. Set to the highest resolution, and then downsample for the lower resolutions after all the artwork is done.
Brochure 300ppi
Web 72 ppi
Powerpoint somewhere in between. (I don’t do Powerpoint but, since it is screen-based, I guess it could be 72 as well.)
Thank you for your responses! This is great! I think I had my web images set at 150 ppi. I am going to take a look at them at 72 ppi. I doubt there will be any difference.
What would be a good resolution for a web image that will make it crisp and professional looking without taking so much space?
Resolution only matters when printing.
For the Web, image resolution is irrelevant.
http://www.leannehoad.com.au/temp/dpi_test.htm All that matters is height x width of the image measured in pixels.
When you Save for Web (GIF, JPG or PNG) you then adjust the level of compression to balance the quality of the image (does it please your eye?) against file size. That’s always a tradeoff best judged on an image by image basis.
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Regards
John Waller
John W. is right about web images I just mention 72 ppi because that’s what Save for Web uses.
Does CS3 allow you to convert to vector images? I think that this would solve most of my problems in terms of forcing all images in to pre-defined "boxes" as well. Thanks again for all your help!
I thought SFW stripped all metadata (inc resolution); the 72 ppi is just a default figure PS uses for images with no set reolution?
All I know is that, when I do a SFW on a 240ppi file the resulting file is "shown" as 72ppi in Image Size.
Beyond that I don’t care.
Does CS3 allow you to convert to vector images? I think that this would solve most of my problems in terms of forcing all images in to pre-defined "boxes" as well. Thanks again for all your help!
Converting to vectors is not an option. You need to study the Chapters in PS Help on bitmap images and vector graphics.
You can use the Image Processor in PS to save out copies of a folder of originals as TIF files (for print) and JPEGs (for web) at sizes you specify.
the resulting file is "shown" as 72ppi in Image Size.
"shown" where? photoshop? something else? that might just be a program default when no resolution info is available in the file.
In PS "image size".
It probly is the program default.
Like I said: beyond that I don’t care.
"shown" where? photoshop?
Yes. In the Image > Image Size… dialogue (when no resolution data exists)
that might just be a program default when no resolution info is available in the file.
That’s right, in the absence of resolution data:.
Photoshop "defaults" to 72 dpi
Windows Paint "defaults" to 96 dpi (or 120 dpi with Large Fonts) Paintshop Pro will show you whatever number you want to see
http://www.scantips.com/no72dpib.html#6 —
Regards
John Waller
Ditto: the discussion that PPI is irrelevant to web and PowerPoint.
I think I had my web images set at 150 ppi. I am going to take a look at them at 72 ppi. I doubt there will be any difference.
Your doubt is entirely correct. Look at them in Photoshop at 100% zoom. That is all that matters. Ignore PPI.
For PowerPoint, you need to determine at what resolution the presentation will be displayed. Supposing that your projector or screen only displays 1024×768 pixels, there is no point in making an image larger than 1024×768. PPI has no influence on screen display.
Does CS3 allow you to convert to vector images?
Are you referring to drawings or line art or photographic art in your original question? (or are you asking an unrelated second question?) If you are dealing with line art, do not use 300 PPI for print. You may want to explain what kind of vector images you are working with.
PPI is irrelevant to web and PowerPoint.
in addition to your fine advice on power point pixel demensions being related to the output of the projector, remember that presentations may also be printed. it’s making a large assumption to think they won’t be…
Isn’t PowerPoint based on print dimensions (just like a monitor, i.e. 10 x 7.5 @ 96ppi)?
I’m trusting/hoping/praying that Raja is not using PowerPoint for print design and that any printing will only be as handouts or notes and not the full page slides. If PowerPoint is to be used for full page printing, one could simply use the same print resolution images used for the brochure.
Good point dave. I work with people who use PowerPoint for freakin’ everything, including publication art and 3 X 5 foot posters! Just shoot me…
I have to be careful in preparing the res of an image for them based on its intended PowerPoint use.
No, I am not using PPT for print design 🙂 Looks like I got one thing right. I am, however,asking an unrelated quesiton concerning vector images. I have a compilation of both drawing and photo images. I am not sure exactly how the drawn images are drawn (Software used, etc). It turns out that my real issue is resolving the aspect ratios of these images. I am hoping by being able to convert images to vector images, that I won’t have this problem…I could be totally off in that such a functionality doesn’t exist 🙂 Thank you everyone for all your input! It has all been EXTREMELY helpful!
