Chris Malcolm wrote:
> In rec.photo.digital <> wrote:
>> On Mon, 18 Jan 2010 15:19:27 -0800, astork wrote:
>
>>>> how do I put a large fixed picture on the Craigslist ad?
>>>> I know how to put up to 4 small pictures, but I see many
>>>> people putting large full color pictures in their ad.
>
>> When you resize your pictures, even if you resize to a large
>> height-by-width size, just change the DPI (dots per inch) to something
>> like 72.
>
>> This will make a huge difference is file size while keeping the height
>> and width the size you want.
>
> Not necessarily. In all the editors I use, changing the DPI has
> absolutely no effect on file size. You have to change the absolute
> size of the image in pixels (or the jpeg compression) to change the
> file size. I suspect the editor you're using must tie PPI to pixel
> dimensions in some way.
>
> In a web image ad, if the display size of the image is unspecified in
> the formatting of the web page, e.g. the html code, then the size
> displayed will depend on the size of the image in pixels.
You may not realize it but you're bringing this discussion closer to an
exchange I had some time ago in a.c.f. with Hummingbird.
He and I discussed pixel dimensions and it was the first of many bizarre
discussions I had with Hummingbird in which he seemed unprepared to
understand conventional terminology. Later I saw it was one of his k00k
tricks.
In that discussion, Hummingbird's way of defining terms such as "pixel
height" was so contrary to normal practise that I called the thread
"Humpty with Alice" because Humpty had said this:
"When I use a word it means just what I choose it to
mean – neither more nor less" [Etc. See link.]
http://en.wikipedia.org/wiki/Humpty_..._Looking_Glass
I don't know if anyone is still interested in reading that original
Hummingbird and Franklin discussion but here's the thread in Google
Groups:
<http://preview.tinyurl.com/ye6276a> (April 2007)