#Kameken Nikon Medical NIKKOR 120mm F4 Nikon F mount Accessories: F&R caps It appears to be in beautiful condition, with only a slight amount of dust. This lens is primarily used in medical settings for oral and skin photography. It can be used at magnifications ranging from 1x to 1/11x (0.35m to 1.6m). The cables for illumination are missing, but you can still take pictures without a strobe. If you want to use a strobe, you will need to prepare a dedicated cable or use an external strobe. Medical lenses generally have their F-number change depending on the magnification. With this product, it's F4 at 1/11x and F32 at 1x magnification. However, since this product is an Ai model, using a mount adapter with an aperture ring that is compatible with the F mount's G-type allows you to open the aperture to F4 at high magnifications like 1x. Image 5 is an example of a 1x shot at the usual F32, while image 6 (reference) was taken at 1x with F4. This allows you to avoid light diffraction. However, please note that it is mechanically impossible to stop down from F4 at low magnifications. This medical lens is rarely available, so please consider it if you want to enjoy it in a unique way. The watch image was taken with an APS-C crop at 180mm. If you purchase multiple items, we will offer a discount on the shipping cost, so please contact us before purchasing. We have confirmed that there are no cracks or breaks, but we 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. We store it in a clean condition, but we will disinfect it with alcohol before shipping. Regarding the product, we also sell it on auctions, flea market apps, and in person, so the stock 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.