Pentax DA* 300mm lens

smc PENTAX-DA* 1:4 300mm ED [IF] SDM
MakerPentax
Technical data
TypePrime
Focal length300mm
Focal length (35mm equiv.)450mm
Aperture (max/min)f/4 / f/32
Close focus distance140 centimetres (55 in)
Max. magnification0.24x
Diaphragm blades9
Construction8 elements in 6 groups
Features
Manual focus overrideYes Yes
Ultrasonic motorYes Yes
Weather-sealingYes Yes
Unique featuresQuick-shift focus, SP (Super Protect) coating, filter window, detachable tripod mount
ApplicationSupertele
Physical
Max. length184 millimetres (7.2 in)
Diameter83 millimetres (3.3 in)
Weight1,070 grams (38 oz)
Filter diameter77mm
Accessories
Lens hoodPH-RBK 77 mm
Angle of view
Diagonal5.4 °
Retail info
MSRP1,399.95 USD

The smc PENTAX-DA* 1:4 300mm ED [IF] SDM is a supertele prime lens for Pentax K-mount. It uses Pentax' silent SDM motor for autofocus on compatible cameras (K10D[1] and K200D upwards), and has Quick Shift Focus to allow manual adjustments in autofocus mode.

Reception

Photozone reviewed the lens favourably, stating, "in terms of resolution and contrast the lens is able to produce very good results straight from the max. aperture setting" and "mechanical quality of the lens is absolutely exceptional thanks to high quality materials and seals against dust and moisture". Of the ultrasonic autofocus motor, they wrote that it "works like a breeze - it's both fast and almost silent." Overall, they concluded that the lens is "highly desirable lens for sports and wildlife photographers."[2]

ColorFoto wrote the lens had outstanding sharpness over the entire frame, even wide open,[3] and PopPhoto.com said that "images shot in the field were satisfyingly contrasty and sharp."[4]

References

  1. ^ "PENTAX K10D - Übersicht - RICOH IMAGING DEUTSCHLAND GMBH".
  2. ^ "Pentax SMC DA* 300mm f/4 ED [IF] SDM - Review / Test Report".
  3. ^ "Colorfoto.de Pentax SMC-DA* 4/300 mm ED IF SDM an Pentax K20D - PC Magazin".
  4. ^ "Lens Test: Pentax 300mm f/4 SMCP-DA* ED IF SDM AF". 17 December 2008.
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