Re: [APML] Picture Resolution For Web

["Franklin A. Holub" <lists@my-spot.com>]

I started out using PhotoCD's way back when and stayed with it. I make most of my "normal" images 768x512 - It sound weird but it works well. I will often include links at the bottom of the page to more common (larger) screen resolutions as well.

 

Frank
http://www.my-spot.com

----- Original Message -----

From: Eddie Guscott

To: APML

Sent: Friday, October 25, 2002 3:49 PM

Subject: [APML] Picture Resolution For Web

Hi All

 

I think this may have been covered in the past, but I can't find much on it.

 

What (and I'm sure you'll all have different answers) is the "recommended" resolution for astro pictures to display on the www.

 

I'm using PS6 and have final film images approx 56MB (16 bit) at about 3800x2550 and final ccd images approx 4MB and 1300x850

 

The reason for asking is that I can display a ccd image at, say, 1000x???, and image looks fine (using the medium option for quality under "saving images for the web"in PS when converting to JPEG) and file size is around 100Kb, but if I do that with a film image (reduce size to 1000x???), converting to JPEG produces a file size of over 200Kb.

 

Should files  which are the same size (1000x???) be the same size (100Kb)?? or am i doing something wrong.

 

If I reduce some film pictures (especially wide field), to 1000x??? and reduce the file size to about 100Kb (using the low quality option) the image looks like it's set in jelly!!

 

Help and/or advice appreciated

 

Thanks

 

Eddie Guscott