Canon announced the Canon EF 50mm f/1.8 STM 'Pancake' Lens on 11 May 2015. Official Canon EF-S 55-250mm IS STM Lens Press Release.
Compact and lightweight-an outstanding walk-around lens-Canon's EF 50mm f/1.8 STM is a great entry into the world of EOS prime lenses. With an 80mm effective focal-length on APS-C cameras, 50mm on full-frame cameras, it's an excellent prime lens for portraits, action, even nighttime photography. Its bright maximum aperture of f/1.8 helps it not only to excel in low light, but also to capture gorgeous, sharp images and movies with beautiful background blur thanks to its circular 7-blade design. An updated lens arrangement with new lens coatings helps render images with excellent color balance, plus minimized ghosting and flare. Performance is brilliant, with a stepping motor (gear-type STM) to deliver near silent, continuous Movie Servo AF for movies plus speedy, smooth AF for stills. (Source: Canon USA).
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New Canon EF 50mm f/1.8 STM Lens Reviews to be updated as soon as its made available.
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Canon EF 50mm f/1.8 STM Lens Features / Specifications
| Focal Length & Maximum Aperture | 50mm f/1.8 |
| Lens Construction | 6 elements in 5 groups |
| Diagonal Angle of View | 46° |
| Focus Adjustment | AF with full-time manual |
| Closest Focusing Distance | 1.15 ft./0.35m |
| Filter Size | 49mm |
| Max. Diameter x Length, Weight | 2.7 x 1.6 in., 5.7 oz. 69.2 x 39.3mm, 160g |