This is an amazing lens that does everything you'd want it to. It's light, fast and extremely versatile. The colours are great and the image quality is excellent. Sharp images from f/2.8 and upward.

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  Sharp, great FoV range

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  None, possibly the best lens on the system

This is a good lens when it works. There is a history of this lens having focusing failure for no apparent reason. Because the focus is electrical, when the focus fails the lens is unusable and is usually replaced rather than repaired. You might want to get an extended warranty if you can.

It has a known issue of the internal focusing failing without cause, unrepairable if out of warranty, take your chances on a replacement from Pentax if under warranty. Because it is a focus-by-wire, it appears to be a failure of the circuitry, when it fails it cannot be used in any mode.

• +

  Weight, IQ

• -

  Fragile, unrepairable

of the size and weight and price (with about 4 times the depth of field.) Even an MF/T 35-100 f2.8 is about five times as big, five times as heavy, and five times as expensive.

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  Everything

• -

  nothing

I got my 06 lens as part of a 2-lens Q7 kit. My hope was to have something for candid shots and more formal portraits without having to get in people's faces. The tele zoom range of this lens fits the bill very nicely. A Q7 with the 06 lens is not obtrusive in public.

• +

  Small, lightweight, sharp, good zoom range

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  Aftermarket hood, touchy focus ring

I am amazed that the overall rating for this lens is not higher. Next to the 01 it is the star of the Q lens line up. Except for the slower focusing of the Q this lens would compete favorably with equivalent DSLR lenses.

• +

  Excellent IQ, Constant 2.8 aperture, Amazing reach for size

• -

  Not much negative, focus ring is annoying but usable.

I use my mirrorless camera primarily for street photography, since it is less conspicuous than a DSLR with zoom or telephoto lens. I love the size of the lens, very compact and light. The zoom is smooth and easy, and the autofocus is quick.

The Q system really lacked zoom until this lens was released. The fact that its 2.8 the whole way through just sweetens the pot and helps to keep your shutter speed up if you really don't want to push the ISO too high.

• +

  Sharp, Constant f2.8

• -

  Poor build quality

this is my favourite lens for the qs1 at the moment. the packaging was slightly off, and i really dislike the make of this lens (it doesn't feel sturdy) but the pictures it takes is amazing.