RF-S 3.9mm F3.5 STM Dual Fisheye
Canon RF-S
Canon RF-S 3.9mm F3.5 STM Dual Fisheye

About

This is a cropped frame Canon RF-S mount lens introduced by Canon 4 months ago. Its focal length is 6mm FFE with an aperture of ƒ/3.5. 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.