#Kameken COSINA COSINA ON-S 50mm F2 No accessories Dust particles are noticeable when illuminated by strong light. Based on the sample images, there doesn't seem to be any reflection issues. COSINA is now a manufacturer with the technical ability to OEM manufacture Voigtlander and Zeiss lenses, but they used to actively develop and design their own lenses. This lens from that era is particularly easy to use without any major flaws. It's relatively thin, so it doesn't add much length even when using a mount adapter, which is a plus. Also, I didn't notice it while shooting, but looking back at the sample images, it seems to produce rainbow ghosting, making it a fun lens to use. If you purchase multiple items, I will offer a discount on the shipping cost by combining them. Please contact me before purchasing. I have confirmed that there are no cracks or breaks, but I cannot check for minor scratches that may have occurred during manufacturing, shipping, or normal display in stores, so please understand that this is a used item. I store the item in a clean condition, but I will disinfect it with alcohol before shipping. Regarding the item, I also sell it on auctions, flea market apps, and in person, so the inventory may run out depending on the timing. The nearest post office is closed on weekends and holidays, so if you win the bid during that time, the item will be shipped after the holiday. Thank you.