printing and battery question
Been following the threads here which have been extremely helpful. Thinking of about going to rechargeable cr-v3's but not sure if they are warranted - i mainly shoot on weekends and may run off a couple hundred shots a day. Currently I'm using NiMH AA's and sharing with an old off camera flash. Was wondering if anyone in Canada has had dealings or experience with these batteries:
Second question I had (and it might be a dumb one)- I'm thinking of blowing up some 8x10 photos further that I had printed by Costco. Quality wasn't stellar, but acceptable and price can't be beat. My question then, is whether there is a standard of resiziing for best quality? Is there a certain file size I should be aiming for or is it a matter adjusting the pixels per inch? Sorry, I know there have been lots of questions, but i'm completely new to photoshop and having stuff sent off for digital printing.
Thanks for the help!