The Zeiss ZE/ZF.2 Distagon T* 21mm f/2.8 is a wide-angle lens produced from 2008 to 2015, currently out of production, it is compatible with FF and aPSC format cameras and is sold with different mounts to satisfy a greater number of customers. Focus is manual only and there is no image stabilization. The shooting angle, fundamental for this type of support, is 91.7 degrees and the minimum focusing distance is 22 centimetres. The lens hood is supplied, weight and dimensions are average compared to lenses in the same category. The materials and workmanship are of excellent quality, capable of making it solid and resistant. The images are of high quality and are characterized by a remarkable sharpness already at room temperature, the colors are rendered very faithfully and without any predominance of warm or cold tones. Aberrations and distortions are not such as to cause concern and in any case they are completely manageable in post production. The rings are fluid and precise, they have a long stroke which guarantees an excellent grip. The Zeiss ZE/ZF.2 Distagon T* 21mm f/2.8 is a high-performance lens, ideal for those looking for a valid support that can be used in all circumstances and for any photographic genre, even if wide-angle lenses are able to express the best with landscaping and architecture. It can be used by both professionals and amateurs, the cost is high but the investment is more than justified. Since it is out of production it is easy to find it used, in this way you can obtain a significant saving compared to the list price.