光学12博官网滤清器我们的创始人，集收集了12博官网。不是像你一样的12博官网'd find on a knick-knack shelf, but optical glass. Lenses, prisms, reticles and filters, for example. Focus on the filters. Many of his filters came out of military surplus, and this is for-real stuff. We mean many are solid dyed optical glass, ground and polished to flatness standards that were probably excessive. Others are from the old days in photographic optics, and their standards were even tighter than your militaristic Uncle's. We've found that photographers, artists, and optical designers still have an occasional need for good glass filters, so we're making a list of some goodies. As always, don't be timid about calling for quotes on quantities. If we have 'em, we'll sell 'em. Just don't sell them back. Please!
一个明智的假设我们的意思是将我们的运输室留下了曾经有过12博官网对象的包裹。这是一个恶意谣言。 。 。地面12博官网是薄板12博官网，其表面已经物理研磨或酸蚀刻以产生颗粒状，灰白，不透明的表面。使用它从镜头或镜头系统中产生图像。甚至是一个简单的放大镜，在地面12博官网之间保持并说，一个窗口，将产生窗口场景的图像。地面12博官网具有另一种神奇的特性：对距离观察的任何物体是不透明的，但如果该物体与12博官网表面直接接触。您的光学教育的必要因素。 3-1 / 2“x 4-3 / 8”x 1/16“厚。