The Moon by Martin Bailey | Nov 28, 2014 | 0 comments Shot with a 600mm lens and 1.4X and 2.0X Extender on a 1.3X Crop Factor 1D Mark IV. Effective focal length 1,872mm! Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Δ This site uses Akismet to reduce spam. Learn how your comment data is processed.