Pentax Lenses that have a f/4 or faster aperture

"I love love love this new lens, the quality of the photos is spectacular if done in the right lighting. I would absolutely recommend for novices and professionals alike." bhphotovideo.com

Wide aperture f/1.4

	Aperture	f/1.4			Diameter	64 mm
	Fixed aperture	n/a			Max focal length	50 mm
	Zoom range	1x			Length	38 mm
	Min focal length	50 mm			Weight	221 g

"As expected this is a fast, versatile lens for taking macro photographs." bhphotovideo.com

	Aperture	f/2.8			Diameter	66 mm
	Fixed aperture	n/a			Max focal length	50 mm
	Zoom range	1x			Length	66 mm
	Min focal length	50 mm			Weight	264 g

"A thing of beauty that takes stunning photos." bhphotovideo.com

Wide aperture f/1.8

	Aperture	f/1.8			Diameter	66 mm
	Fixed aperture	n/a			Max focal length	31 mm
	Zoom range	1x			Length	69 mm
	Min focal length	31 mm			Weight	346 g

"It is light weight, very smooth, very sharp images" bhphotovideo.com

	Aperture	f/2.8			Diameter	81 mm
	Fixed aperture	n/a			Max focal length	100 mm
	Zoom range	1x			Length	64 mm
	Min focal length	100 mm			Weight	340 g

"Great multi-purpose performing lens, particularly if you want to travel light and leave the bag at home." bhphotovideo.com

Wide aperture f/1.8

	Aperture	f/1.8			Diameter	74 mm
	Fixed aperture	n/a			Max focal length	77 mm
	Zoom range	1x			Length	48 mm
	Min focal length	77 mm			Weight	269 g

"This is absolutely the lens I needed to round out my Pentax K10 camera gear." bhphotovideo.com

Fixed aperture The same maximum aperture at all focal lengths

	Aperture	f/4			Diameter	84 mm
	Fixed aperture	Yes			Max focal length	24 mm
	Zoom range	2x			Length	86 mm
	Min focal length	12 mm			Weight	431 g

"For landscape photos during the winter months and in wet or dusty conditions, it is a great lens." bhphotovideo.com

	Aperture	f/3.5			Diameter	69 mm
	Fixed aperture	No			Max focal length	55 mm
	Zoom range	3.1x			Length	69 mm
	Min focal length	18 mm			Weight	230 g