Right...that's what occurs when resampling is specified for the image...
Pixels dimensions can be reduced, document size can be reduced,
resolution can be reduced, and file size decreases...
Without resampling, file size doesn't change...
Rick
BTW...I never have been able to figure out what "IIRC" is...what does
that stand for?
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> Sent: Thursday, September 11, 2003 6:21 PM
> To: CF-Talk
> Subject: Re: RE: RE: Image manipulation
>
>
> 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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