Some photographs and stuff

So onward we go, solving all the problems that I've wanted to have available for web delivery for, like.. well a long time..

For photographers there's often as much fascination with the camera and technicals (ISOs, f-stops, and the like) as there is with the images.

And if you've owned a lot of camera's (and I have owned a lot of cameras :-P) then what camera was used for an old image is always of interest.

So, pushing on from our previous musing on images I've re-implemented image sizing (it was too slow because of bad logic) and dealt with metadata (exif) extraction. You have two choices here, pre-process everything or extract what you need, as you need, during web page delivery.

Pre-Processing

Obviously its more efficient to do all the processing pre the content ever reaching the web server.

So roughly, locally, you:

• process all original images into derivative sizes (500, 750, 1000, 1500, 2000) on the longest edge

• extract exif data

• process exif data into summary form (more later)

• store exif metadata in json for later use on delivery side

Display

On the web side:

• shortcodes allow some sophistication in web side image displays (single image, gallery display, lightbox popup etc.)

• having all exif data pre-stored means just pulling it out of the 'database' when required

So you can do something like the following shortcode for a gallery:

{{f:gallery; src:2021-seagulls.jpg,2021-mhd.jpg,2021-bees.jpg,2021-lobster.jpg,2021-mural.jpg,2021-lily.jpg; caption:Seagulls in the rearview, "A man, his horse, and his dog", Beehive
(Penola S.A.), The big lobster
(Kingston S.E.), Mural
(Kingston S.E.), Lily;}}

Which creates a clickable light-boxed image gallery, thus:

Seagulls in the rearview

A man, his horse, and his dog

Beehive
(Penola S.A.)

The big lobster
(Kingston S.E.)

Mural
(Kingston S.E.)

Lily