Yes I do but I thought you already set the margins in the CSS. Didn't investigate too close yet as I'm in Edit mode. It takes a long time as I'm viewing one-by-one to add the descriptions and then have to go to Edit Comments to read my comment of which ones to mark invisible. Then go set them accordingly. Because I have a large number of images, it's too cumbersome working in Edit image mode as the Save is all the way down at the bottom of the page. And I'd not want to do so much editing without saving
One "problem" is the extreme diffrence viewing in Camino (Mozilla) and Safari. With setting text to default size, it's so noticeable. Camino is "awful" in comarison. The type is quite large, the image off-center. No idea what the site looks like on a PC so won't play around yet. (This comment isn't to reflect on zenphoto, it's a know issue with web pages that will never go away.)
It's coming together though and love the idea of the page title being used for the ALT text in each image.