Medium format camera filter (orange) for Bronica. Features: An orange filter to enhance contrast and produce dramatic tones in landscape photography, especially for sunsets and daylight scenes. Model Number: "S056 2C YA3" is the accessory ID for an orange filter for Bronica's Series VIII size. Application: Primarily a drop-in (not screw-in) type filter, made for lenses such as the 75mm f/2.8 and 135mm f/3.5. 2. Bronica 90mm lens (assumed) The "90mm" likely refers to the "Zenzanon 90mm F4" lens, primarily for the Bronica ETR series (6x4.5 format). ※For the S2, 75mm, 100mm, and 105mm lenses are typically standard. The 90mm lens for the ETR series is known as a standard and high-quality macro/standard lens for this camera system.