Ask before photographing people
A smile and a gestured camera goes far. Many older women in Upper Egypt prefer not to be photographed; respect a wave-off without negotiation. A small print or a tip after a portrait is a kind exchange, not a transaction.
Tripod permits
Tripods inside fenced sites (Karnak, Valley of the Kings, GEM) technically require a 300 EGP 'professional camera' permit. Phones and handheld cameras are free. Drones require a permit obtained in Cairo weeks ahead; assume drones are illegal everywhere unless you have paperwork.
Inside tombs
Photography is now permitted in most Valley of the Kings tombs with a 300 EGP photo ticket bought at the gate (no flash, no tripod). Tutankhamun (KV62), Seti I (KV17) and Nefertari (QV66) are still no-photo. Guards will check — and confiscate cards.
Backlight, not noon light
Egypt's midday sun is unflattering and brutal. The two photographic hours are 06:00–08:30 and 16:30–sunset. Plan tomb interiors for midday (cool, even, artificially lit) and exteriors for the edges.
Dust is the real enemy
Change lenses inside a bag, not in open air. Carry a blower and lens cloths. Sand will eventually find every seal — accept it and travel with a body you don't worship.