Pentax Lenses
Common
- XYZmm: Focal length
- 1:x.y: Maximum aperture
Focus/Mount Type
- K, M: Manual Focus, Manual/Aperture priority metering
- 645: Medium Format mount
- AF: Early AF system with AF motor and electronics in lens that works only with ME-F body.
- A: Manual Focus, supports Shutter priority and Program exposure metering
- F: Adds Auto Focus to capabilities of A lenses
- FA: Adds ability to communicate MTF to body to capabilities of F lenses
- FAJ: Removes aperture ring from capabilities of FA lenses
- DA: Same capabilities as FAJ, but with reduced imaging circle for digital cameras with APS-C sized sensor
- DA L: Same capabilities as DA lenses, Lighter construction
- D FA: Same capabilities as FA lenses, usable on both film and digital cameras
Features
- AL: Aspherical elements
- ED: Extra-low dispersion glass elements
- SMC: Super multi coating lens coating
- HD: Newer "high grade" multi-layer lens coating
- PZ: Power Zoom
- SDM: Auto Focus Type: Supersonic Drive MotorSupersonic Drive Motor
- DC: Auto Focus Type: direct current motor
- IF: Internal focusing
- WR: Weather Resistant (when matched with weather resistant body)
- AW: All Weather (dust-proof and weather resistant; higher-level than WR)
- ★: High performance, including weather and dust sealing
- Limited: High quality, compact design (primes)
- Macro: 1:1 magnification
- XS: Extra slim, even more compact than Limited
- RE: retractable (compact size in standby mode)
- SR: Shake Reduction (image stabilization)
Examples
- Pentax D FA 150-450mm F4.5-5.6 ED DC AW
- HD Pentax DA 16-85mm F3.5-5.6 ED DC WR
- HD Pentax D FA 645 Macro 90mm F2.8 ED AW SR
- Pentax smc DA★ 300mm F4.0 ED (IF) SDM
