This category is for companies which are primarily known as accessory makers, and which did not make cameras or lenses in any notable quantity.
“Sekonic is a Japanese manufacturer of light meters, still active today (2010). The company's...Sekonic
“Kobayashi Seiki Seisakusho (小林精器製作所, meaning Kobayashi Precision Works) was a Japanese company...Kobayashi Seiki
“In the photo business Sony is one of the newer players. It entered the photography market in the...Sony
“Maruyama Seisakusho (丸山製作所) was a Japanese company, known from an advertisement dated January...Maruyama
“Yokoyama Seisakusho (横山製作所) was a Japanese company based in Shiba, Tokyo (today Minato), c.1939...Yokoyama