You need a pancake lens! Canon 40mm review for travel photography – Finland based travel photographer – Blog About Best Places to Visit in Europe | Engineerontour
FE 40mm F2.5 G Full-frame Ultra-compact G Lens for Sony Alpha E-mount Cameras Black SEL40F25G - Best Buy
Amazon.com : EF 40 mm f/2.8 STM Pancake Lens(Japan Import-No Warranty) : Camera Lenses : Electronics