IIRC, If you're using Photoshop, then when you are resizing/reshaping/whatever, make 
sure that you change the DPI and the pixel sizes at the same time for the web ready 
images.

----- Original Message -----
From: Rick Faircloth <[EMAIL PROTECTED]>
Date: Thursday, September 11, 2003 3:39 pm
Subject: RE: RE: Image manipulation

> That part I got...what I wasn't factoring in was the "resampling" that
> was taking place when I was resizing the images...
> 
> When resampling occurs, the image is changed.  When resizing
> occurs without resampling, a new image is not created.
> 
> I think, if I'm not mistaken, that when you say "you'd have to 
> *resample*your image to 1500*2100 pixels..." you reallly mean 
> *resize*, because
> *resampling* causes the confusion we had earlier.
> 
> I need to *resample* when creating thumbnails or onscreen display 
> versions.That reduces file size...resizing without resampling does 
> not reduce file
> size
> and is therefore a bad practice for onscreen display images.
> For printing, images should be *resized*, but not *resampled*.
> 
> If you work with Photoshop, and work with resizing as well as 
> resamplingimages, which can both be done at the same time, you'll 
> know what I'm
> referring to...
> 
> Rick
> 
> 
>    >  -----Original Message-----
>    >  From: [EMAIL PROTECTED] [EMAIL PROTECTED]
>    >  Sent: Thursday, September 11, 2003 1:41 PM
>    >  To: CF-Talk
>    >  Subject: Re: RE: Image manipulation
>    >
>    >
>    >  I don't understand why you're having such problems with
>    >  this.  An 8X10 image @ 300 dpi is a 2400 X 3000 pixel image.
>    >   Resize this image to whatever pixel dimensions you want for
>    >  display purposes.  You're confusing yourself with the 72dpi.
>    >   That's irrelevant.  Don't worry about it.
>    >
>    >  For a 5X7 @ 300 dpi, you'd have to resample your image to
>    >  1500 * 2100 pixels.
>    >
>    >  For a 4X6 @ 300 dpi, you have 1200 * 1800 pixels.
>    >
>    >
>    >  ----- Original Message -----
>    >  From: Rick Faircloth <[EMAIL PROTECTED]>
>    >  Date: Thursday, September 11, 2003 11:12 am
>    >  Subject: RE: Image manipulation
>    >
>    >  > It was the resampling that was complicating the
>    >  discussion...my bad...
>    >  >
>    >  > But that brings me back to my original question about the 
> CF image
>    >  > manipulation tags.  I want to be able to automatically 
> resample    >  > the images
>    >  > for display so the file size is smaller while keeping the
>    >  > originals (if they
>    >  > are
>    >  > scanned or taken at higher resolutions) at the same ppi.
>    >  >
>    >  > I don't know yet whether or not any of the tags will 
> perform that
>    >  > function.
>    >  > I want to be able to upload a hi-res 8x10 image, have it 
> downsized    >  > (dimensions only)
>    >  > to a 5x7 and 4x6 (still at same ppi, if the camera's ppi 
> setting is
>    >  > variable)
>    >  > then resample the image to 72 ppi for display on the 
> website.  The
>    >  > 8x10,5x7, and 4x6
>    >  > are for downloading, saving, and printing...that's what
>    >  I'm trying to
>    >  > accomplish.
>    >  >
>    >  > Anyone know what tag can do this?  CFX_Image?
>    >  > CF_MagickTag/ImageMagick?CFX_ImageCR from Efflare?
>    >  >
>    >  > If CFX_ImageCR can accomplish all of that... ppi 
> manipulation and
>    >  > resampling, too,
>    >  > then it'll be worth $149, easily...
>    >  >
>    >  > Thanks for your help...
>    >  >
>    >  > Rick
>    >  >
>    >  >
>    >  >    >  -----Original Message-----
>    >  >    >  From: Claude Schneegans [EMAIL PROTECTED]
>    >  >    >  Sent: Thursday, September 11, 2003 12:32 PM
>    >  >    >  To: CF-Talk
>    >  >    >  Subject: Re: Image manipulation
>    >  >    >
>    >  >    >
>    >  >    >  >>Can't agree there...perhaps we're comparing 
> apples to
>    >  > oranges...    >
>    >  >    >  Excatly: you are comparing two different images!
>    >  >    >
>    >  >    >  >>Took the same photo and resampled it to 72 pixels per
>    >  > inch (ppi),
>    >  >    >  360 pixels wide, and 503 pixels high. (Maximum 
> quality JPEG
>    >  > setting)    >
>    >  >    >  When you "resample" an image this way you get a 
> different    >  > image.    >  You say yourself one is "1501 
> pixels wide", the other
>    >  > one is
>    >  >    >  360 pixels.
>    >  >    >  Of course, if you print them at the same size, thay 
> won't    >  >    >  look the same.
>    >  >    >  Here are your apples and oranges.
>    >  >    >
>    >  >    >  >>I'm not sure if we're missing something in this 
> discussion,    >  >    >
>    >  >    >  I'm pretty sure I'm not ;-)
>    >  >    >
>    >  >    >  >>Does using "ppi" as opposed to "dpi" to refer to
>    >  >    >  resolution make any difference in our discussion?
>    >  >    >
>    >  >    >  If you see a difference between a pixel and a dot, 
> yes it
>    >  >    >  could make a difference, but for me it doesn't.
>    >  >    >
>    >  >    >  
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