This past day was my last day of vacation - thought I'd give myself one more treat! I found a Best Buy store about an hour away that still had a couple of black GX85 kits in their warehouse. (There was no display for them on the sales floor.) One had been repackaged - badly. The other really was brand new, so I bought it. Can it replace my older cameras, my Olympus E-M10 in particular? I have two weeks to determine that, but first impressions are rather positive. Unboxing: Opening the top flaps, one finds a sales brochure - "Micro Four Thirds Lens Lineup" - in an unsealed plastic bag with the manual and warranty info. Under this is a flap listing the contents of the box and optional accessories - very useful if checking out the camera in-store! Under this flap is an open compartment with the camera itself (lens attached) and a closed compartment holding the strap, battery, USB cable and A/C adapter. Noticeably absent: a rear lens cap for the 12-32 lens! Also a lens pouch. The camera shell is obviously plastic, but fairfy robust with little flexing. Handling the camera, one can hear and feel its innards rattling around - until one turns the camera on. (The IBIS, as confirmed by the manual.) Taking off the lens for the first time revealed a closed shutter, not an exposed sensor cavity. After using the camera, the sensor is exposed - it floats! It jiggles! Hello, IBIS. Battery and SD card insertion is no different than with the Olympus E-M10. Out of the box, the battery was about half-charged. For now, the only way I can charge it is in-camera. Turning it on - after setting the time, date, and region, I was ready to go! Camera size is nearly identical to the E-M10 (sans hump). The Panasonic body feels just slightly heavier, but also has a slightly more comfortable and secure grip for my right hand (US glove size medium). Considering I already liked the E-M10 size and grip, the GX85 is looking pretty good as a successor. The kit lens has a plastic mount. I couldn't care less about that. I have yet to test the lens out, but can say that zooming the lens in and out isn't quiet. It's smooth but stiff. Also not a concern for me, a stills shooter. EVF, LCD, and controls: This is my first experience with a Panasonic EVF, and it's rather unpleasant. Its position is great for the right eye - terrible for the left. Size is OK, but not ideal for someone with glasses. My eyes are already sensitive to chromatic aberrations in eyeglass lenses; I see these in the EVF, too, when I look off-center. If I move the camera around (or just blink or move my eyes), white parts of the image flash red, green, and blue (tearing). There are also some distracting internal reflections which can blur the display. Fortunately, in general use and with some practice, I'm not noticing the problems so much that it's a deal-breaker. Besides, the tilt LCD is more important to me. In-camera, default colors are very saturated and shifted toward red. This is noticeably worse in the EVF than on the LCD, making it even harder to guess how the photos will actually look on a calibrated monitor. Colors look a bit more natural when viewed out-of-camera - on a calibrated monitor. (Similarly, Olympus saturation can appear stronger in the camera, but is more consistent between EVF and LCD.) The LCD tilts up and down - same as the one on the E-M10, only the Panasonic screen is a bit thinner and more flush with the camera body. This makes it harder to handle, but more aesthetically pleasing. Happily, reviewing photos in-camera is noticeably snappier on this camera than on my Olympus cameras. Olympus offers finer navigation controls, however. In comparison, the Panasonic dials are stiff, have a rather long throw between positions, and result in larger zoom steps. Incidentally, the on/off switch is also stiff. Buttons are tiny and not as tactile as what Olympus offers, IMO - but they're fine. Shutter and stabilizer: With all lenses I tested, one can hear the IBIS working continuously while the camera's on - a whispery hum, just like one would hear in an Olympus OM-D with the shutter half-pressed. The mechanical shutter has a nice sound to it. I'd call it quiet - just a bit louder and sharper than the E-M5 II's soft and smooth mechanical shutter (which I absolutely love). A bit quieter than the GX85's fake shutter sound played by default when using the electronic shutter. Grip: a bit superior to Olympus grips, in my opinion. My hands are on the small side and find the grip just about perfect. The thumb and two fingers do most of the work; the palm mostly supports the side of the camera rather than the bottom. Menus and default controls: Here, familiarity breeds contentment, not contempt. I find that I much prefer Olympus default controls, menu organization, and on-screen help. Panasonic cameras aren't night-and-day different, though. There are enough similarities that I can find my way around. Of course, there are also reasons to prefer Panasonic's interface to Olympus's. There are just more pages of settings to go through in each category, rather than more categories with fewer pages. Banding with the 20mm lens and mechanical shutter? So far, I haven't been able to produce any. I don't know what this says about the sensor, the shutter, or any other part of a camera that might contribute to banding. I'm just happy with the result! Very happy! Is the AF any better than Olympus AF? One evening might be sufficient to test what I was most curious about. With the 20mm lens, Panasonic's AF is not noticeably faster mechanically - just more capable in low light and low contrast situations. It'll still hunt, but not in futility. With other lenses, I imagine focus acquisition can be noticeably faster, too. All of my Olympus cameras have trouble accurately focusing my 75-300 II. Very preliminary results indoors show me that the Panasonic AF is more accurate, perhaps due in part to its pinpoint focus mode. I will test this a lot more outside in the coming days. If it proves true, then this will be the deal-maker par excellence for me. If not, well - I think there's still more than enough to like about the GX85 for this Olympus fan to adopt it enthusiastically.