Un appareil photographique (couramment : appareil photo) est un objet permettant la capture de vues d'objets réels, en deux dimensions (photographie) ou en relief (stéréoscopie ou stéréophotographie).
Shanghai Seagull Camera Ltd is a Chinese camera maker located in Shanghai, China. Seagull is the oldest camera maker in China. The product line of Seagull includes TLR cameras, SLR cameras, folding cameras, CCD and SLR camera lenses, large-format cameras, film, night vision scopes, and angle viewfinders. Seagull's cameras usually use basic, time-tested mechanical designs that require no batteries. Seagull has made 21 million cameras since it was founded in 1958. Some Seagull cameras are distributed through the Lomography company.
On June 10, 2012, Shanghai Museum of Old Camera Manufacturing opened to the public. The museum features historic items of the company, most noticeable the production line of Seagull 4A and collections of more than 200 cameras.
Seagull has been producing a series of Twin-lens reflex camera since the 1960s and it is believed that they are still producing; the latest model is 4A-109 featuring modern lens coating and some other improvements.