Manual Focus Mode You can use the manual focus mode of your camera to Zone Focus which is a popular technique used in street photography.
Live-view Live view lets you take photos without using the viewfinder which makes you less obstrusive and this works very well during street photography where you don't want to get people's attention.
Image Stabilization Image stabilization reduces the effects of camera shake at long exposures and long focal lengths in street photography thus ensuring sharper photos.
28 mm - Good Wide Angle Coverage Having a good wide angle coverage becomes very important in street photography.
RAW shooting capability RAW files contains much more color information compared to JPEGs, and gives you more room for post processing without significant quality loss. They provide wider dynamic range and option to recover shadow and highlight clipping to some degree.
Medium sized Body Mirrorlessbody of Ricoh GXR P10 28-300mm is a good combination of relatively small size and good handling camera, without giving the impression of a professional camera.
Small 1/2.3 sensor An articulated screen gives you the flexibility to shoot in non traditional positions such as waist level, which helps you to be more creative and unobtrusive in the streets.