January 23rd, 2008 by 
Photo-John
SMC PENTAX DA* 300mm f/4 ED(IF) SDM Lens
KEY FEATURES:
- High performance telephoto lens
- SDM system creates smoother, quieter auto focus
- Weather resistant and dust resistant body
- Quick-shift Focus System for instant switching from auto focus to manual focus
- PENTAX SP coating protects the exposed lens elements
- ED elements compensate for chromatic aberration
- Developed specifically for PENTAX digital SLRs
- Focal length equivalent to 450mm in the 35mm format
SPECIFICATIONS:
| LENS MOUNT: | PENTAX KAF2n |
| FOCAL LENGTH: | 300mm (equiv 460mm) |
| APERTURE: | f/4 |
| MINIMUM APERTURE: | f/32 |
| LENS CONSTRUCTION: | 8 elements in 6 groups |
| ANGLE OF VIEW: | 5.4° (w/ Pentax DSLR) |
| MIN FOCUSING DISTANCE: | 4.6′ (1.4m) |
| MAX MAGNIFICATION: | 0.24x |
| FILTER DIAMETER: | 77mm |
| DIAPHRAGM CONTROL: | Fully Automatic |
| NUMBER OF APERTURE BLADES: | 9 |
| LENS APERTURE RING: | n/a |
| TRIPOD ADAPTER: | Included, demountable w/ coin |
| HOOD: | PH-RBK 77mm |
| OBJECTIVE CAP: | O-LC77 |
| CASE: | S120-210 |
| MAX DIAMETER X MIN LENGTH: | 3.3 x 7.2″ (83 x 184mm) |
| WEIGHT (W/O HOOD): | 37.7 oz (1070g) |
| NOTES: Supersonic Motor, Quick-shift Focus, SP (Super Protect) Coating, Filter Window, Detachable Tripod Mount | |
Related Content:
Pentax Camera and Lens Reviews
Pentax Forum
2008 PMA Tradeshow Intro
Pentax Web Site
