This macro optic provides an angle of view equivalent to a 150mm on a 35mm format camera, when mounted on a Pentax Digital SLR. It sports a fast f/2.8 maximum aperture, life size magnification at its closest focusing distance, weather resistant construction and costs around £515.

The image quality of this lens is superb and the lens is very well made: it really feels and handles like a precision instrument. It is weather-sealed and can be used in adverse weather and perhaps more importantly, in environments with dust and pollen without any worry about getting dust on the...

I've only just received this, but have been testing it out most of the day. Excellent, sharp images. Very shallow depth of field at large apertures and close up. Just what is needed in a macro lens.

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  Consistent Output, Easily Interchangeable, Lightweight, Rugged, Sharp Focus, Strong Construction

I am very pleased indeed with this lens. It provides consistantly high quality images. My prime use is flowers and insects. It also makes a good portrait lens as well but I rarely use it for that. It has survived a trek in the tropical rain forest with not problems and good results

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  Consistent Output, Durable, Easily Interchangeable, Lightweight, Quick Focus, Sharp Focus

Easy to focus and finetune with the focus ring but sometimes hunts, but less so now I'm used to it. Pin sharp macro work and good depth of field. Camera usually set at 100 ISO and lens is fine even in dull light.

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  Consistent Output, Durable, Easily Interchangeable, Quick Focus, Rugged, Sharp Focus, Strong Construction