Pentax K-01 Zoom Telephoto lenses

"The build quality seems top notch, no play in the focus or zoom rings at all, and very smooth action of both."

Fixed aperture The same aperture at all focal lengths

Silent focus motor Silent and fast

Wide aperture f/2.8

	Zoom range	2.7x			Aperture	f/2.8
	Fixed aperture	Yes			Weight	0.7 kg
	Image stabilization	None			Max focal length	135 mm
	Focus motor	Pentax SDM			Length	136 mm

"I use the lens for landscape and wildlife photography. Love the fast quiet autofocus and very sharp image quality."

Fixed aperture The same aperture at all focal lengths

Silent focus motor Silent and fast

Wide aperture f/2.8

	Zoom range	2.9x			Aperture	f/2.8
	Fixed aperture	Yes			Weight	1.4 kg
	Image stabilization	None			Max focal length	200 mm
	Focus motor	Sigma HSM			Length	184 mm

"Well built, nicely damped MF, fast accurate AF, acceptably sharp wide open, even better at F/4, and really pleasing bokeh."

Fixed aperture The same aperture at all focal lengths

Silent focus motor Silent and fast

Wide aperture f/2.8

	Zoom range	3x			Aperture	f/2.8
	Fixed aperture	Yes			Weight	0.8 kg
	Image stabilization	None			Max focal length	150 mm
	Focus motor	Sigma HSM			Length	135 mm

"I've used this lens now for about 1200 shots of lacrosse games taken in the evening/night under the lights, bright sun and cloudy days. Great resolution when the focus is spot on."

Fixed aperture The same aperture at all focal lengths

Silent focus motor Silent and fast

	Zoom range	4.2x			Aperture	f/4
	Fixed aperture	Yes			Weight	1.2 kg
	Image stabilization	None			Max focal length	250 mm
	Focus motor	Pentax SDM			Length	168 mm

"Lens has excellent speed and sharpness."

More advanced image stabilization Sigma OS

Silent focus motor Silent and fast

	Zoom range	6.9x			Aperture	f/3.8
	Fixed aperture	No			Weight	0.5 kg
	Image stabilization	Sigma OS			Max focal length	125 mm
	Focus motor	Sigma HSM			Length	n/a

"I am shooting through this lens, and I am loving the results. I really haven't had any complaints about it and it has performed as described."

More advanced image stabilization Sigma OS

Silent focus motor Silent and fast

	Zoom range	4x			Aperture	f/4
	Fixed aperture	No			Weight	n/a
	Image stabilization	Sigma OS			Max focal length	200 mm
	Focus motor	Sigma HSM			Length	102 mm

"I use it for sports and wildlife and realy enjoy it. AF is fast and make about no noise at all so it's very good for nature shooting."

Great telephoto lens 400 mm

Silent focus motor Silent and fast

	Zoom range	3.3x			Aperture	f/4.5
	Fixed aperture	No			Weight	1.7 kg
	Image stabilization	None			Max focal length	400 mm
	Focus motor	Sigma HSM			Length	204 mm

"I gave it 5 stars based on what I would expect from a zoom lens and the image quality is really quite impressive for a super zoom; better than anything else of this type that I've seen. It is a good, solid, well made lens and I couldn't be happier with it."

Great zoom range 13.9x

More advanced image stabilization Sigma OS

Silent focus motor Silent and fast

	Zoom range	13.9x			Aperture	f/3.5
	Fixed aperture	No			Weight	0.6 kg
	Image stabilization	Sigma OS			Max focal length	250 mm
	Focus motor	Sigma HSM			Length	n/a

"Very nice lens, sharp in all range/all apertures, nice bokeh, decent focus speed, good built, equipped very well, cheap, not having any problems with it."

Fixed aperture The same aperture at all focal lengths

Wide aperture f/2.8

	Zoom range	2.9x			Aperture	f/2.8
	Fixed aperture	Yes			Weight	1.1 kg
	Image stabilization	None			Max focal length	200 mm
	Focus motor	None			Length	194 mm