Lens structure😊 40mm F2.8 Lens has a 8 elements in 7 groups optical design, with 2 Extra Low-dispersion glasses, which could effectively improve the image quality and resolution. All metal made body, with aviation grade aluminum alloy material bayonet, make the lens more durable and compatible. 1:1 Magnification Ratio, 0.17m Focus Distance😊 1:1 maximum magnification ratio pairs with a 0.17m minimum focusing distance, will capture more unseen details for you. Suit working with close-up subjects. Manual focus design, along with focus distance and depth of field scales, aids in precise focusing control. F2.8 Large Aperture😊 With F2.8 large aperture, suits working in a variety of lighting conditions and also contributes to the sleek form factor. A 11 blades diaphragm contributes to a smooth, creamy dreamy and pleasing bokeh quality. Suitable for portrait,night photography. Allow more focus scope and more light transmit in, achieve clearer macro effect and greater depth of field. More Than Macro Photography😊 It offers the 60mm equivalent focal length in full frame, which is ideal for macro photography. It have excellent performance in portrait as well since it has close focus feature and large aperture. Suitable for macro, portrait, night scene, still life, insects, jewelry photography. Wide Compatibility: 40mm F2.8 Macro Lens is compatible with Canon EOS M Mount Mirrorless Camera like M1 M3 M5 M6 M8 M9 M240 M50, etc. Make sure that it’s fit for your camera. If you have any problems, just ask for customer services~