Options:
- BG colour e.g. black
- No gap, large or 1px gap
- Square, landscape, portrait or different dep. on setting on each project (as is now)
- Captions over the top or beneath and on hover or always showing
- Effects on photos as you mouseover e.g. greyscale effect, fade out, blur on hover
- Display title only or title and description
- Number of columns
- Show categories or not and show current category
Square and 1px gap between, desaturated until hover – looks less messy, so could be good for homepage. Hide categories.