We just added Sony's RX10 to our enthusiast compact camera buying guide and also updated our aperture comparison chart with Canon's PowerShot G1 X Mark II. While image quality in this class won't compete with a good mirrorless camera paired with a good lens, they pack enough features that should satisfy serious photo enthusiasts. Many cameras in this range also offer long, flexible zooms, making them an excellent choice as a more portable second camera, or as a single do-it-all option. Once we've had more time with the G1 X Mark II, we'll update this guide with our recommendation. 

We also updated our aperture comparison chart for cameras in this category with the Canon G1 X Mark II.

In much the same way as equivalent focal lengths can be used to directly compare angle of view, equivalent apertures can be used to compare a lens's ability to blur backgrounds in any given shooting situation (a lower equivalent aperture will blur backgrounds more, at any given focal length). 

They can also be used as an indicator of how cameras are likely to compare in terms of low-light image quality, although plenty of other factors complicate this too (including lens quality, image stabilization effectiveness, and image processing, etc). 

In the graph below, the lower the line, the better the camera is likely to be for low-light image quality and blurring backgrounds, at any given equivalent focal length. 

Click on the graphic above to view it at full size for easier reading.