I'm using "image galleries" to organize and display photographs on my blog (http://ghostofkarlmarx.wordpress.com/mongolia-highlights/), but I'm having trouble getting the images to appear in the size I'd like when viewed as an "attachment page."
All the images in my galleries are on the larger size, the long edge is 980 pixels. This size is perfect for landscape oriented images (http://ghostofkarlmarx.wordpress.com/mongolia-highlights/moneyshot-16/), but not for portrait oriented images (http://ghostofkarlmarx.wordpress.com/mongolia-highlights/locals-waiting-at-the-sainshand-train-station-to-pick-up-passangers/). With portrait oriented images, this size makes it so that people visiting the website can't view the entire image at once, they have to scroll up/down.
I'm trying to figure out how to change the size that portrait oriented images appear on an attachment page for a gallery. I don't want to simply resize the images, because I'd still like the full size image to be available (and because that's a really ghetto way of solving this problem), I simply want to be able to adjust the size at which the images display on the gallery's attachment page.
Here's what I've already tried: In the media menu (under "settings"), I've set the "Large Size" images to have a maximum horizontal length of 940 and a maximum vertical length of 680. This only seems to have an effect, however, when I insert images directly into a post. This setting isn't having any effect on my galleries' attachment pages.
The blog I need help with is ghostofkarlmarx.wordpress.com.