50-200mm F4-5.6 DC OS HSM
Pentax K
Sigma 50-200mm F4-5.6 DC OS HSM

About

This is a full frame Pentax K mount lens introduced by Sigma 15 years ago. Its focal range is 50200mm with an aperture of ƒ/45.6. You can find a review of it on DPReview.

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KEH is American and has slightly higher grading standards, while MPB is originally from the UK. Both are global leaders in used lens trading.

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