Sounds like you had the wrong size...... Or, maybe your camera was too small. The large Harrison's are very big and would be suitable for 8x10 or maybe even 11x14 cameras or for studio use perhaps. The smaller sizes, I think are great with 4x5. I don't care for tube type darkcloths. I work primarily in urban settings, often not great ones, and I feel too cut-off from the world under them. I feel much more comfortable if I can easily take a quick peek from under the cloth to check my surroundings.
Bookmarks