for the Lower Canyon i was there too late for the Photographers Pass. They stop that at 3pm but there was so much light in there you don't really need a tripod. I was shooting at 1000-1600 iso on 5d3 at 5.6 with great results. To tell you the truth im glad i didn't take the tripod because getting through some spots was tight, i had a good time just regular pass and wife in hand. Got great shots without tripod. UPPER canyon is another story that place was dark and definitely recommend photographers pass to get tripod in there.