Pentax Reviews: Cameras, Lenses, and Flashes

We also feature comprehensive equipment databases featuring technical data as well as user-reviews of Pentax lenses, cameras, and accessories. Check them out below:

• Pentax DSLR/SLR Database
• Comprehensive Pentax Lens Database
• Third-Party Lenses for Pentax
• Accessory Database and Reviews

We use a ten-point scale to rate the lenses that we review, in which the top score is a 10. The overall score of a lens is determined by the taking the average of the following sub-scores:

• Sharpness
  Criteria considered include center sharpness, corner sharpness, sharpness wide-open, and resolution.
• 
  Aberrations/Vignetting
  Criteria considered include color reproduction, severity of vignetting, severity of aberrations, distortions, presence of flares, and presence of special coatings/glass elements.
• 
  Bokeh
  Criteria considered include nature of bokeh and number of aperture blades.
• 
  Autofocus
  Criteria considered include autofocus speed, noise, and presence of DC/SDM technology. This sub-score is left out for manual-focus lenses.
• 
  Handling
  Criteria considered include build quality, throw, smoothness of zoom/focusing rings, presence of iternal focusing/zooming, presence of weather sealing, size, weight, and shape.
• 
  Value
  Criteria considered include versatility, price, features, resale value, appeal, and overall quality.

The following nomenclature is used for overall scores:

The following icons may appear throughout lens reviews:

	Classic Screwdrive Autofocus		Supersonic Autofocus
	Lens with Automatic Aperture		Lens with Aperture Ring
	Lens has Internal Zoom		Lens has Internal Focus
	Full-Frame Lens		APS-C Only Digital Lens
	Weather-Sealed		Quick-Shift Focusing in AF Mode
	Powered Zooming		Build-in Lens Hood
	Adapter required for Pentax DSLRs		Discontinued