| Feature | Sony FE 28 mm F2 Full-frame Wide-angle Prime Lens | Pentax SMC DA 18-135mm F3.5-5.6 ED AL [IF] DC WR | 
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| Image |  | ![Pentax SMC DA 18-135mm F3.5-5.6 ED AL [IF] DC WR (Pentax 21977)](http://d3khozgb6y8kys.cloudfront.net/pic/50A7519F450B7E406F56C2AF42C05CCDE7701B6E48DBA5D9090AE3A06E53811E.png) | 
| Product Code | SEL28F20 | Pentax 21977 | 
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| Retail Price | $450 USD | $477 USD | 
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| Maximum Aperture | 2 F-Stop | 6 F-Stop | 
| Minimum Aperture | 22 F-Stop | 38 F-Stop | 
| Min Focal Length | 28 mm | 18 mm | 
| Max Focal Length | 28 mm | 135 mm | 
| Maximum Magnification | 0 x | 0 x | 
| Max View Angle | 75 Degrees | 76 Degrees | 
| Min View Angle | 75 Degrees | 12 Degrees | 
| Lens Groups | 8 Lens Groups | 11 Lens Groups | 
| Lens Elements | 9 Lens Elements | 13 Lens Elements | 
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| Compare | Compare to another camera lens | Compare to another camera lens |