DanieleFromItaly

Many thanks

Hello, I'm new in this forum and in underwater photography. I'm going to buy an Isotta camera housing for my Nikon d610. I will use a Sigma 15mm fisheye lens. Isotta (Isotecnic.it) makes 3 domes: 4.5", 6.5" and 9". The last one is very expansive, about 2.000€. In your opinion I'd better buy the 4.5" or the 6.5" dome? Glass or polycarbonate? Thanks in advance for your answers.