A Brief History of Photography: Innovations in Chemistry - Bytesize Science 

Interesting...I would have liked the vid to spend more time on the first few processes....heliograph and daugerreotype. Hard to find detailed explanations of either online....

How did the photographers from the 19th century calculate exposures?

It's good and I liked it

this was very interesting and you explained it very well! the music is great too

Now I want to go look up all the different chemicals experimented with in photography.

Cool stuff, thanks!

very interesting

Thanks! very helpful video

Lol at the blurry kids!

what the hell happened to your thumb! D: