Big Girl Dreamin (more) [Archive] - Fly Fishing Forum

: Big Girl Dreamin (more)

11-18-2000, 05:48 PM
Big Girl Bar, dawn on the majic weekend. I just got some great shots of the BoneClave, Big Girl and some Boston Harbor shots back. Can't wait to show them. Maybe I should hand them off to the man.
Sorry about the size. I can't seem to find a happy medium between quality and size. I need some pointers on that.

11-18-2000, 07:33 PM
Terry -

It was a great morning, I think the real date was 10-01-00 and Bigcat's date may have been off by one in the other photos which show 9-30-00 - meaning these photos came from the same day.

As far as image size, there are a few things to consider...

overall image size is controlled by a number of factors:

a) image size (physical dimensions)
b) for GIF number of colors (16m, 256, 32, 16, etc)
c) for jpeg "quality"
d) for jpeg if tool supports it, "blur" in addition to "quality"
e) and others I won't cover

Generally, GIF is better for small photo images and straight line edges (geometric shapes). It is necessary if you want transparency (page banners like "Destinations" or animations like those ad banners you see on the web).

JPEG is better for medium to large photographic images and undefined edges in the shapes within. It is the most common and best format for photo images.

JPEG compression produces a small file size. Sometimes it takes a long time to decompress the file for view. That's where "progressive" images come into play, where they appear blurry and get sharper as more data arrives. Actually it takes longer with progressive images but a blank space seems to take longer because the reader sees nothing at all during the lag for deferred viewing.

I tend to reduce the image size down to something less than 500 pixels wide because that's the main window size for people with 640x480 display settings once the navigaiton bar on the left side is open. From there I usually go with jpeg for the smaller file sizes and play with "quality" vs. file size until I am happy enough to keep it. I tend to shoot for a 20k byte size or less. Sometimes a pic deserves 40k though.

Certain software tools make this process easier. I first got Adobe 4, then upgraded to 5.5 which comes with an option called "save for web". This pops up an interactive screen that shows you file size, quality, and blur factor so you can tweak things to the desired effect. Even still, the best thing to do is just reduce the image size to cut down the byte count.

I would poke around on the web for image toys or pay the 20-30 bucks for a license to some software you like after the eval period. Hate to say it but I have been so spoiled by Adobe Photoshop 5.5 that I can not recommend another tool. PS 5.5 is very expensive BTW.

Feel free to send them to me as well, I'll include them in the respective journals.