On 27/12/03 11:37 AM, "Mervyn & Giuliana Bond" <[EMAIL PROTECTED]> wrote:
> Eddy > You speak of file size, 200-300KB. But what of resolution. Images > sent by email, unless to used for printing, are usually 72dpi. Have > you considered the issue of resolution? > Merv > Howdy, From my experience resolution as in dpi will produce a certain size file, But the sane resolution will produce an increased file size if there is more colour content eg 1000's of colours versus 100's of colours. What Eddy has written of is attaching a file size of 100Kb which when encoded onto the email blows out to 300Kb. I have seen a similar thing happen. A normal Camera jpg file attached to an email produces a similar size encoded mail. However when I have manipulated a file to turn photo upright or have altered its colour etc in say Photoshop the same file grows substantially when encoded. I am using OS9.1 which keeps the Mac Creator codes etc, on the resource fork. I am guessing that a lot of the altered info is also on the resource fork and as this is usually sent with the file it is this that causes the encoded file to blow out in size. I said " guess " Eddy might want to check out the Camera files and see if he can download them directly as Jpeg files to the Mac. In my case with a Sony I do not need an application to download them, just copy straight to Mac Hard Drive. Have fun Bob > At 10:06 AM +0800 26/12/03, Eddy Wajon wrote: >> Can someone please explain why my JPEG attachments to an email are so large? >> >> I have OS 9.1 with a G4 40 GB, 128MB ROM. I take digital pictures using a >> Fujifinepix camera and then download them using Exif Viewer. I then process >> and save them in either Tiff or JPEG format using PhotoShop 4.0LE. For >> emailing I convert all files to JPEG and reduce them to what the computer >> says is about 200-300 kB. However, at this size, they have relatively poor >> resolution considering the quality of the picture I take. >> >> When I receive an email with an attached JPEG, the attachment typically has >> a size of 100 kB. When opened, these picture are usually of good quality >> and resolution, typically better than the JPEGs I have saved at supposedly >> 300 kB. When I save this emailed JPEG attachment to disk, and then try to >> attach it to another email, the size increases from 100 to 300 kB. Why? >> >> Dr Eddy Wajon >> 16 Eckersley Heights >> Winthrop WA 6150 >> >> [EMAIL PROTECTED] >> >> >> -- The WA Macintosh User Group Mailing List -- >> Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> >> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> >> Unsubscribe - <mailto:[EMAIL PROTECTED]> >> >> WAMUG is powered by Stalker CommuniGatePro >
