The E-M5 is the higher end camera, but it has been around for a couple years so the E-M10 does have some advantages... better image processor, Wi-Fi, slightly smaller, built-in flash, more focus points, etc. The E-M5 is weather sealed, which is a necessity for some. It also has 5-axis stabilization, compared to the E-M10's 3-axis.
Unless you need weather-sealing, the E-M10 does have some nice features.
Hi Monty, I would suggest DPReview www.dpreview.com I have included a link to your comparison: http://www.dpreview.com/products/compare/side-by-side?products=oly_em10&products=sony_a6000; Additionally, individual review on Amazon are usually true-to-form. Hope this helps.
It really depends on the lens, I would say that it would struggle to focus with the kit lens in poor light. The camera is a contrast focus AF system, not phase detect so low light is more problematic. Other than that it is a very nice camera. I use mine less often now that I have the Olympus E-M1.
Currently Olympus does not have fields for the OMD E-M10 in their exif data to record pitch, roll and heading. However an Olympus Product Engineer is providing us with further info which we can elaborate on if you contact tech support at 800-991-3350 or 631-389-2117.
The detail I see with this camera is greater than I have seen w my Nikon D90. I have only had this camera since Christmas and haven't taken any photos of food at this time. In order to take close-up photos of subjects such as food, i would use a Macro lens. Olympus makes a 60mm Macro that has received excellent reviews on other websites. They also provide photos so you can get an idea of how good it is. As you probably know, each lens has a minimum focus length.