Product Description: Item: Meyer-Optik Trioplan 50mm F2.9 Altix Mount Includes a mount adapter to convert from Altix to EOS M. Condition: The lens is clean. I think it's in beautiful condition. This popular lens is known for its distinctive "bubble bokeh" effect, the Meyer-Optik Gorlitz Trioplan 50mm F2.9. It's an old East German lens, so please consider it as a practical item. The optics are quite clean for their age. However, please forgive any oversight. The focusing and aperture rings move smoothly. The above description is based solely on my subjective assessment. Basically, please make your judgment based on the photos. Please refrain from purchasing if you are looking for a perfect, mint-condition item or the quality of current products, as it is an old item. We do not accept returns due to adapter compatibility issues, so please understand. If my passion for cameras reignites, I will remove the listing along with the product! #oldlens #mirrorless #Meyer #Trioplan