The LT20-EX Extension Tube is used for optical systems with longer focal lengths. Made in a 6 inch length, this extension tube has all the same features as standard 2 inch LT Series lens tubes except that the depth of the internal threads is only 1 inch. A lens retaining ring is included with each of these Extension Tubes.

• 使用

  2.0 in. Lens Tubes

• 镜片直径

  50.8 mm

• 调节

  Fixed

• 类型

  Accessory

• 螺纹类型

  2.035-40

• 长度

  155.4 mm

LT20-EX扩展管用于焦距较长的光学系统。该加长管为6英寸长，除了内螺纹深度只有1英寸外，与标准2英寸LT系列镜头管具有相同的特点。每个延长管都包括一个透镜保持环。