Technically the Olympus OM-D E-M5 Mark III sits below the OM-D E-M1 Mark II in Olympus’s interchangeable lens camera line-up but it has an updated processor that seems to give its smaller body a slight edge for speed and AF performance.
Olympus has given the E-M5 Mark III the same 20.4Mp Live MOS sensor as the OM-D E-M1 Mark II. The processor is also listed as the same TruePic VIII engine, but according to Olympus UK’s Clare Harvey-May, it’s been updated for a bit more oomph.
This sensor and processor pairing enables sensitivity settings up to ISO 25,600 with up to ISO 6400 available in the automatic settings.
The OM-D E-M5 III’s chip has a couple of other trick up it’s sleeve. There’s 5-axis image stabilisation (IS), for example, and Olympus’s respected sensor cleaning system.
The OM-D E-M5 II has the same electronic membrane over the imaging chip as the E-M1X. This is claimed to reduce the chance of dust sticking in comparison with the OM-D E-M5 Mark II.
Like the OM-D E-M1 II, the OM-D E-M5 III has a121-point (all cross-type) phase-detection autofocus (AF) system. As it’s a mirrorless camera, the phase detection pixels are on the imaging sensor.
Olympus has worked on the AF algorithm to make the focusing more sensitive and consistent even in tricky situations. In addition, the E-M III uses AF data from the Live View feed and recorded images to improve tracking of subjects that move unpredictably.
The AF point can be set via one of six modes, Single, 5-point, 9-point, 25-point, 121-point or small.
The OM-D E-M5 III can shoot at up to10fps (frames per second) in high-speed sequential shooting mode with continuous autofocusing and exposure metering. However, Pro Capture mode is also on hand. When this is activated, the OM-D E-M5 Mark III starts shooting as soon as the shutter release is pressed halfway.
When the shutter release is pressed fully, the camera starts to save images but up to 14 files from the moment before the shutter was fully pressed are also recorded. We’re still waiiting to hear how many images can be captured after the shutter rlease is pressed and what the frame rate is.
There are also clever shooting options such as Live Composite, Live Time, Live Bulb, Focus Bracketing, Focus Stacking and a 50Mp High Res Shot mode.
Olympus’s Live Composite mode is especially useful for shots of traffic trails, fireworks and light painting. It enables you to overlay a shot with a series of images captured at the same shutter speed. However, after the first image, only the brighter parts of subsequent images are visible.
As before, the High-Res Shot mode is a tripod-only option. When this mode is activated, the E-M5 III shifts the imaging sensor by 0.5-pixel movements between 8 shots. These are then merged one image that’s equivalent to 50Mp.
Focus Bracketing and Focus Stacking
In Focus Bracketing mode the Olympus E-M5 can record up to 999 shots with one press of the shutter release. The camera shifts the focus point slightly between each shot. The size of this shift can be set to one of 10 levels. Once the images have been recorded the images can be transferred to a computer and merged into a single picture with greater depth of field than is possible with one file.
This merging can be carried out with the supplied Olympus Workspace image editing software or and third party package.
In Focus Stacking mode the E-M5 III automatically merges 8 images with different focus points.
Olympus has upgraded the video capability of the OM-D E-M5 Mark III in comparison with the Mark II model. The new camera is capable of shooting C4K 24p video at up to 237Mbps or 4K 30p, 25p, 24p video at 30p 102Mbps.
In addition, Full-HD video can be shpt at up to 120p for slow-motion playback.
Further good news is that there’s a Flat picture mode. This isn’t as flat at the Log mode introduced by the E-M1X, but it gives a bit more scope for post-capture grading.
There’s also a mic jack built-in, rather than in an optional grip and the video autofocus performance has been improved.
Sadly, there’s no headphone port so you can’t monitor audio that’s recorded in-camera.
The Olympus OM-D E-M5 Mark III uses the BLS-50 battery but it’s upgraded to 8.4Wh. This gives a more stable and consistent power supply.
Standard CIPA testing indicates the battery life is 310 shots or 110 minutes of movie recording.
It’s also possible to charge the battery while it’s in the camera using a USB power bank or cigarette lighter socket. However, the camera cannot be powered via those supplies. That means you can only charge the battery, not shoot with the camera while using those power sources.
Build and Handling
At 85.2×49.7×125.3mm and 366g body only (414g with the battery and SD card), the Olympus OM-D E-M5 III is smaller and lighter than the E-M5 Mark II. This has been enabled in part by a reduction in the size of the image stabilisation (IS) system.
Despite the shrinkage, Olympus still claims that the IS can enable shutter speeds to be slowed by 0.5Ev more than the Mark II. That means it’s up to 5.5Ev with a non-stabilised lens and 6.5EV with the M.Zuiko Digital ED 12-100mm F4.0 IS PRO at 100mm (200mm equivalent).
Like the OM-D E-M5 II, the Mark III is fully weather-sealed. And overall, the camera feels pretty robust. It may be made from polycarbonate, but it’s doesn’t feel flimsy or too lightweight.
Olympus has also significantly beefed-up the front grip and made the thumb rest more pronounced and it makes the camera feel more comfortable and secure in your hand.
Viewfinder and Screen
Although the OM-D E-M5 Mark III has a 2.36 million-dot viewfinder like the Mark II, Olympus has upgraded it to an OLED panel. This makes the colours brighter and more vivid.
I found it a very comfortable viewing experience.
At 27mm, the eyepoint is also quite long which makes the viewfinder easier to use with glasses.
On the back of the camera there’s also a 3-inch 1,040,000-dot touch screen. This is now a vari-angle hinge for easy viewing from a range of shooting positions.
Although the E-M5 III is immediately recognisable as an OM-D camera, and it looks very similar to the mark II, there are a few changed to the control arrangement. For a start, the mode dial is now to the left of the viewfinder.
In addition, the Photo Story mode has gone from the mode dial but there’s a much more useful custom mode instead.
It took me a while to spot how to set switch between using the viewfinder and screen, or let the camera switch automatically. That’s because the control is now to the left of the viewfinder on the top-plate.
The control to access the drive mode options is just above it.
I got to use the Olympus OM-D E-M5 Mark II for a couple of hours a few days before its launch. Then subsequently I’ve been able to use it in Austria immediately before and after its announcement.
The first thing that struck me about it is how responsive it is. It just seems a little perkier than the previous incarnation and the OM-D E-M1 Mark II.
My first experience of the E-M5 III was in the Magic Circle HQ in London. It’s an amazing place, but quite gloomy. Nevertheless, the E-M5’s AF system coped very well. In fact, it dealt with the conditions a bit better than the E-M1 II I had with me.
The Face and Eye detection does a great job of spotting faces and eyes in the frame. It even picked out the eyes of portrait paintings on the walls and in dark alcoves.
Olympus’s stabilisation system is the best around and it really delivers in the OM-D E-M5 Mark III. I shot a video while walking up and down stairs and the results are great. It almost makes a motorised gimbal pointless.
The images are also impressive. The top sensitivity setting, ISO 25,600 is a step too far unless you’re looking to record an event and you’re not too worried about the quality of the image, but step down to ISO 12,800 and the results are good.
Follow the link to browse and download full-resolution images
This 4K video was shot on the OM-D E-M5 Mark III. Check out the autofocus system and image stabilisation performance.
This video was shot on the Olympus OM-D E-M5 Mark III in C4K video mode.
I’m still shooting with the Olympus OM-D E-M5 Mark III. It’s not quite a final sample, but I am able to publish the images. And I can see why because the results are good. There’s a good level of detail and noise is controlled very well for most f the sensitivity range.
However, it’s the low light performance of the autofocus system that has really surprised me. I expected it to struggle in the very low light of the early briefing venue, but actually it did a great job.
I’ll update this OM-D E-M5 III review as I can. I’m looking forward to seeing what the camera can do in half-decent light!