If I understand correctly the pop-up images are currently 800px but you want them larger? If this is the case you can set the size in Web Properties / Images tab. Here I've set it to 960 px.
Type: Posts; User: Egg Bramhill; Keyword(s):
Re: Making Clipped Pictures Show Original
If I understand correctly the pop-up images are currently 800px but you want them larger? If this is the case you can set the size in Web Properties / Images tab. Here I've set it to 960 px.