LENS SPECIFICATIONS
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RED 18-50MM f2.8 CF 镜头
| Specifications: | |
|---|---|
| Focal Length Range | 18-50mm |
| T Stop Range | T3 - T22 |
| Maximum f Stop | f/2.8 |
| Close Focus from Lens Front | 1.73 inches |
| Length from Front of Lens to Image Plane | 6.16 inches |
| Minimum Marked Object Distance | 8 inches |
| Maximum Format Covered | Super 35mm |
| Diagonal Angle of View for 30mm Image Circle | 75.72 - 31.27 degrees |
| Iris Scales | Two opposing scales, whole stops marked |
| Angular Rotation of Iris | 48 degrees |
| Iris Drive Gear | 116 teeth 0.8 metric module x 0.2 inches wide x 2.91 inches from image plane |
| Focus Scales | Two opposing scales, footage marked from infinity to MOD |
| Angular Rotation from Infinity to MOD End-stop | 175 degrees |
| Angular Rotation Between End-stops | 180 degrees |
| Focus Drive Gear | 128 teeth, 0.8 metric module x 0.2 inches wide x 4.37 inches from image plane |
| Zoom Scales | Two opposing zoom scales |
| Angular Rotation of Zoom Scales | 51 degrees |
| Zoom Drive Gear | 125 teeth, 0.8 metric module x 0.2 inches wide x 3.59 inches from image plane |
| Length from Front of Lens to Lens Mount | 4.12 inches |
| Front Diameter | 4.5 inches |
| Weight | 1.05 kg / 2.3 lbs. |
