All at high speeds - but I haven't shot it much at low speeds. Always the same side. I noticed that it is much darker on one roll of film than the other, and the dark roll of film gave me some trouble with winding. I loaded it just like I loaded the first roll, and it started off rather tight. By the time I was halfway into the roll, it was very tight to wind. Would that have caused the darkness somehow? I'm not sure what I did that made it so difficult to wind - the first was fine, the second super tight, and now I have a third in it that is winding fine (like the first).