Kaytee3212
New member
My daughter just got the Nikon d3400 ( my son and I have canon, so we can't really help) we are shooting astrophotography and want to set her camera on manual mode to 30. F 4.5 and when we try to change the ISO to 1600 or 800 the other numbers change or the ISO keeps flashing and won't go past 100. I assume there's something automatic we are missing but I'm not sure what it is. Can anyone help?