Mud Lake is a Conservation Area withing the Ottawa City limits and has a pretty diverse range of flora and fauna. It is also a favourite spot of mine. Autumn has magic lighting, autumn colours and birds tend to exhibit breeding plumage. I headed out there several times in October. These shots are all taken with my outstanding Pentax K-3II and my ED glass, Pentax-M☆ 300mm f:4 Prime. This is a classic “green star” SMC-M☆ Pentax 300mm f/4 K-mount lens. It is the … It is one of the best Pentax manual focus lenses ever made, 84 x 132 mm (3.3″x5.2″) weighs in at 1.8 pounds. All in all a wonderful birding lens.