Olympus OM-D E-M10 Mark IV Review

December 3, 2020 | Mark Goldstein |


The Olympus OM-D E-M10 Mark IV is a new mid-range mirrorless camera aimed at photography beginners and smartphone upgraders.

Olympus have introduced several major improvements since the Mark III version was released in 2017.

These include the same 20 megapixel Micro Four Thirds sensor from the more expensive E-M5 Mark III, much faster 15fps continuous shooting, better continuous focusing on moving subjects, Face Priority/Eye Priority AF mode that focuses on faces in profile or looking down, a flip-down LCD monitor for easier selfies, new improved hand-grip, 5-axis image stabilisation system that's equivalent to 4.5 steps of shutter speed, and USB battery charging.

The E-M10 Mark IV continues to offer 4K video recording (30p, 25p or 24p), 121 contrast AF points, a built-in pop-up flash and an external flash hotshoe, an electronic viewfinder with a resolution of 2.36 million dots and 100% frame coverage, an electronic shutter with a top shutter speed of 1/16,000 sec, an AF Targeting Pad function, focus peaking, an innovative Colour Creator, Live Composite Mode for previewing long exposures, a customisable self-timer, Wi-Fi and Bluetooth connectivity, and an Advanced Photo mode.

The Olympus OM-D E-M10 Mark IV is available in silver or black and is priced at £699.99 / $699.99 body only, £799.99 / $799.99 with the M.ZUIKO DIGITAL ED 14-42mm 1:3.5-5.6 EZ zoom lens for, or £849.99 in a double zoom kit with both the M.ZUIKO DIGITAL ED 14-42mm 1:3.5-5.6 EZ and M.ZUIKO DIGITAL ED 40-150mm 1:4.0-5.6 R lenses.

Ease of Use

Olympus OM-D E-M10 Mark IV

Despite being the most affordable camera in the Olympus OM-D range, straight out-of-the box the E-M10 Mark IV feels impressively robust and reassuringly solid thanks to its magnesium-alloy body.

With dimensions of 121.7 x 84.6 x 49mm, it's virtually identical in size to the previous 3-year-old E-M10 III camera, but weighs a little less at 383g including the supplied battery and a memory card, versus 410g for the Mark III.

Unlike the more expensive OM-D cameras, the new E-M10 Mark IV isn't weather-sealed, an obvious concession to its lower price-point, so you'll need to look at models higher up the range if this is a must-have feature.

The new E-M10 IV has an improved handgrip that's slightly larger than it's predecessors and has a sculpted indent at the top where your right forefinger naturally sits.

It's a subtle change, rather than a revolutionary one, but does help to make it even easier to hold nice and steady when shooting handheld, ably assisted by the pronounced thumb-grip on the rear.

Olympus OM-D E-M10 Mark IV

There's a also a new, very thin rubberised vertical strip that runs alongside the LCD screen. This helps you slightly when holding the camera in selfie mode with the LCD screen flipped down.

Most image stabilization systems compensate for camera shake by correcting yaw and pitch. Olympus claim that camera shake is actually caused by five different kinds of motion, and their image stabilization mechanism additionally corrects for horizontal shift, vertical shift and rotary motion (rolling) for both still images and movies.

The E-M10 Mark IV offers a slightly improved 4.5-stops of compensation (versus 4 stops on the Mark III model) complete with auto panning detection, with Olympus claiming that handheld shutter-speeds as low as 1/4 second are obtainable, something that was certainly backed up for both stills and video in our testing of the camera.

The E-M10 Mark IV once again features a proper built-in pop-up flash, which also usefully supports wireless flash control, and there's even a flash hotshoe on top of the camera.

Low light sensitivity stretches from ISO 200 all the way up to a pro-like ISO 25600, partly down to the implementation of the 20.3 megapixel sensor and latest noise reducing TruePic VIII processor, with an extended LOW setting equivalent to ISO 100 also available.

Olympus OM-D E-M10 Mark IV

Unsurprisingly the E-M10 Mark IV retains the Olympus unique selling point of on-board Art Filters, which are also worth singling out for praise, with Instant Film being newly added to this model. Interestingly these filters can be applied to Full HD video as well as stills.

From the front the E-M10 Mark IV has a streamlined look, with just a small round lens release button to the right of the lens mount and a tiny AF assist lamp above interrupting the otherwise featureless faceplate.

On top is a vacant flash hotshoe that sits directly above the lens, with a clever Off / On / Flash Up switch and a Shortcut button on the left hand-side when viewed from the rear. The Off / On / Flash Up switch is much more convenient than the On-Off switch on the original E-M10, with a further push from the On position to Flash Up doing exactly what you'd expect - very neat.

On the right of the flash hotshoe is a prominently raised shooting mode dial with a surrounding ridged edge for easier purchase, with the various options being program, aperture priority, shutter priority, manual, video, scene modes, Art Filters, and the Advanced Photo mode which was first introduced on the Mark III model.

There are 16 Art Filters in total, with Dramatic Tone and the self explanatory Gentle Sepia working the best for us, the former adding an intensely gritty look as if a photograph has been photo copied and vividly hand coloured.

Olympus OM-D E-M10 Mark IV

The Art Filter digital effects are applied at the time of capture which means write speeds are inevitably a couple of seconds longer than for regular images. When shooting using certain filters, such as Diorama or Dramatic Tone, the screen's refresh rate slows, providing a real time preview of how the eventual image may look.

The Advanced Photo mode isn't quite as exciting as it sounds, simply providing a shortcut to already existing modes such as HDR, Silent, Panorama, Keystone Compensation, AE Bracketing, Focus Bracketing, Live Composite, Live Time, and Multiple Exposure. Still, it does at least make these shooting modes a lot more accessible than being buried away within the main menu system.

Further to the right is the small-ish shutter release button, with the Olympus OM-D E-M10 Mark IV readying itself for action in a second or so.

Squeeze down halfway on the shutter release and the E-M10 Mark IV very nearly instantaneously responds thanks to the FAST (Frequency Acceleration Sensor Technology) system, the screen almost imperceptibly blurring before snapping back into focus, with the AF point flashing up in green with an accompanying bleep of confirmation.

The E-M10 Mark IV certainly delivers in terms of focusing speed and perhaps more importantly accuracy too, with very few false positives in the Single AF mode.

Olympus OM-D E-M10 Mark IV

The OM-D E-M10 Mark IV has a fully electronic shutter, which in addition to expanding the top shutter speed to 1/16,000 sec, also allows for completely silent shooting and an anti-shock mode.

This latter mode, which uses an electronic first-curtain shutter, helps to combat shutter shock, which can occur on the E-M10 Mark IV when using the mechanical shutter at speeds between 1/60-1/200th second. Using either the anti-shock mode or the fully electronic shutter will avoid this unwanted effect.

Take the shot and when shooting RAW and SuperFine (top quality) JPEGs in tandem there's a wait of a more than acceptable one second before the shot is fully committed to the memory card.

The buffer memory is such however that you don't have to wait that long to squeeze off another shot if the opportunity presents itself (up to 22 Raw files).

Action photographers will appreciate the much improved fast burst rate of 15fps, although that's only achieved by locking the focus point at the first frame of the sequence - the EM-10 Mark IV can only perform at a more modest maximum speed of 6.5fps when continuously auto-focusing.

Olympus OM-D E-M10 Mark IV

The number of selectable contrast AF points is the same 121 in a 11x11 grid. Low-light auto focus continues to be excellent – the system managed to focus down to -2EV (as long as there was something to focus on) even without the use of the focus assist lamp. This is seriously low light, about the same as a landscape lit only by moonlight and nothing else.

The camera's continuous auto-focusing has been improved by using algorithms borrowed straight from the flagship E-M1X sports and wildlife camera.

These changes have made the E-M10 Mark IV's contrast-detection AF system more reliable for locking onto and tracking moving subjects, with the camera proving more reliable and less likely to incorrectly focus on the background.

They don't overcome the inherent limitations of contrast-detection AF, though, with some hunting still present whilst the camera tries to fine-tune the focus.

The shutter release is encircled by the first of two command dials. This one by default allows you to change the shutter speed or exposure compensation when using one of the more creative shooting modes, while the second that's positioned under your right thumb principally adjusts the aperture. It's a neat system that make using the manual mode in particular a lot simpler than on most rival cameras.

Olympus OM-D E-M10 Mark IV

Alongside is the user attributable 'Fn2' function button, which rather un-usefully zooms in by 2x by default. Completing the EM-10 Mark IV's top-plate is a red video record button. Press this to record, or stop recording, no matter which shooting mode is otherwise selected on the top dial.

The Olympus OM-D E-M10 Mark IV can record 4K movies at 30p, 25p, 24p and Full HD movies at 60p, 50p, 30p, 25p, 24p.

The E-M10 Mark IV can also use its excellent 5-axis sensor-shift image stabiliser when shooting movies, which translates into very smooth hand-held footage, even when using longer telephoto lenses.

Manual exposure can be enabled for videos, although you do have to rotate the mode dial to the Movie position to take advantage of this. (You can start filming in practically any other shooting mode too, but in that case, videos will always be recorded with auto exposure, and curiously only at 1080p, not 4K)

Audio is recorded in stereo PCM and uncompressed HDMI output is also possible, as is support for timecode, but sadly the camera does not have either a MIC or headphone socket.

Olympus OM-D E-M10 Mark IV

Shooting modes include Aperture priority, Art Filter, Manual, Program and Shutter priority, while one-shot echo and multiecho effects can be added to movies. There's also the ability to capture high-speed VGA footage at 120fps.

Moving to the backplate of the E-M10 Mark IV, the built-in electronic viewfinder is activated by a small button to the right that's virtually hidden from view, which toggles between the rear LCD screen and the EVF, with a button for the dioptric adjustment on the left.

The EVF is exactly the same 2.36 million dot unit with 100% field of view and 1.23x magnification as the previous Mark III camera.

The E-M10 Mark IV actually has two independent image-processing cores, one for the recorded images and the other for Live View images, so the live and recorded image appears very quickly on both the EVF and the rear screen.

The Live Bulb feature cleverly updates the image on the rear screen at pre-set intervals during bulb shooting, giving you a live preview of the exposure, while the Live Composite Mode allows you to see a preview of long-exposure shots as they're being captured.

Olympus OM-D E-M10 Mark IV

The E-M10 Mark IV also features the Super OVF mode, which as the name suggests simulates an optical finder, offering an "unprocessed" view of the scene in front of you.

There's also a built-in eye sensor which optionally switches between the electronic viewfinder and EVF automatically, and the EVF helpfully displays key shooting information along the bottom of the viewfinder.

Another boon to productivity is the ability to preview manual and creative adjustments live through the EVF without having to lower the camera to look at the rear screen.

The EVF also benefits from the addition of Adaptive Brightness Control, which contributes to an improved viewing experience, and it also “gains up” in low light, making it arguably more usable than an optical finder.

The E-M10 Mark IV features capacitive touchscreen operation, although if you're not a fan you can for the most part get away without using it much at all, as there are a plethora of physical buttons which are either dedicated to specific functions or can be customized to suit. Indeed, the touch-sensitive interface hasn't led to a cleaner or more pared-down minimalist look.

Olympus OM-D E-M10 Mark IV

The 3-inch 4:3 aspect ratio LCD screen has a resolution of 1.037million dots, exactly the same specification as the E-M10 III.

Images look particularly vivid with plenty of contrast when viewed on the E-M10 Mark IV's screen and happily this carries over when photos are downloaded to your desktop.

The rear screen can now be tilted down by 180-degrees to face forwards when holding the camera in selfie mode, which makes it a lot more suitable for vlogging.

When you flip the screen down, the camera automatically goes into a special selfie shooting mode, displaying virtual playback, shutter release and movie record buttons along the bottom of the screen, along with an exposure compensation control in the more advanced shooting modes.

It's just a shame that there are no headphone of MIC ports to go with the more versatile screen and the clever selfie shooting mode.

Olympus OM-D E-M10 Mark IV

Dragging a finger, and so the AF point, around the screen is a quick and easy way of following the subject, though inadvertently subsequently tapping it will cause the shutter to fire. This facility can be deactivated by prodding the relevant shutter button icon on the touch screen.

The AF targeting pad feature allows you to move the focus point around the touchscreen using a finger whilst holding the camera up to your eye, which is very similar to Panasonic's Touchpad AF feature.

The Live Guide first seen on the Pen cameras has again been implemented on the E-M10 Mark IV. This lets users try out picture adjustments with the aid of an onscreen slider bar to adjust the likes of depth of field and see the results in real time before pressing the shutter release button with accessibility extended beyond Auto mode. The Live Guide options are presented as a colourful toolbar on the left hand side of the screen.

From the top we have the ability to change colour saturation, from 'clear & vivid' to 'flat & muted', next down is the ability to alter 'colour image', which translates as shifting the tone between warm and cool via slider bar, with the third option shifting brightness/exposure between a simple bright and dark.

The fourth option down is probably the most interesting/effective in that it provides the ability to incrementally blur the background of your shot by again dragging an indicator on a slider - thus providing a similar shallow depth of field effect to that achievable with a DSLR and suitable aperture.

Olympus OM-D E-M10 Mark IV

For its latest Live Guide option Olympus has retained the curiously named 'Express Motions'. There's the option to both blur any movement or stop it in its tracks, again achievable by dragging a slider indicator.

The last option on this tool bar is an on-board shooting hints and tips manual, with the usual 'suspects' of photographing children and pets given the most prominence ('take a picture at their height level' being a summation of the level of advice imparted). We even get tips, as a bit of closet advertising, for attaching Olympus accessories, such as lens converters.

Embedded in the top of the rear thumb-grip is the customisable Function 1 button, which now also usefully doubles up as the AEL/AFL button.

Just below this are the self-explanatory Menu and Info buttons, the latter toggling through various LCD views.

Underneath again is a 4-way navigation controller with a central OK button - pressing this accesses the E-M10 Mark IV's quick menu system, a handy onscreen vertical list of icons that provide quick access to most of the camera's main settings.

Olympus OM-D E-M10 Mark IV

In conjunction with the camera's plethora of external controls and its customisable buttons, this makes the E-M10 Mark IV a pleasure to use. The final controls on the rear are the Delete and Playback buttons.

The Wi-fi implementation on the OM-D E-M10 Mark IV is actually quite good. You first need to download a free app for your smartphone (Android and iOS versions are both available), but after that, everything is pretty straightforward.

You simply touch the Wi-Fi icon on your camera's display to set up a connection. The Olympus OM-D E-M10 Mark IV will provide you with an SSID and password, but you do not need to type in either of them – just launch the app on your phone and scan the QR code displayed by your camera with your phone.

This is nearly as fast as using NFC (Near-Field Communication), a feature that the OM-D E-M10 Mark IV doesn't offer.

Once the connection is established, you can download images from the camera to your smartphone, or use the latter to remotely control the E-M10 Mark IV. You can choose from a variety of shooting modes, set aperture, sensitivity, shutter speed and white balance, select a drive mode, and focus on practically any part of the frame, all remotely.

Olympus OM-D E-M10 Mark IV

The Olympus E-M10 Mark IV has a time-lapse photography mode, which allows you to capture up to 999 frames at user-specified intervals.

You can also tell the camera when to start the sequence, which comes in handy if you want to set up the camera well in advance.

The E-M10 Mark IV will save each shot in the format of your choice – ORF or JPEG – and can optionally create a time-lapse video in-camera, which you can play back on the rear screen, or upload to a website like Vimeo or YouTube.

While shooting raw and creating a video afterwards on your PC gives you more control over grading, sharpening etc., the in-camera option is nice to have when shooting JPEG or raw+JPEG, as it is obviously much faster.

Focus bracketing lets you set the focus point and then automatically take up to 99 shots with focus adjustments around it, thereby greatly extending what is in focus.

Olympus OM-D E-M10 Mark IV

Unfortunately the E-M10 Mark IV still doesn't combine the shots either in-camera or in the supplied Olympus software, so you'll need to use Photoshop or a specialized software program like Helicon Focus to combine all of the shots into one image.

The menu system is similar to that of the professional OM-D E-M1. This is a complex, multi-level menu system that might not seem intuitive at first sight, especially to beginners, so reading the manual is a good idea before starting to explore it.

The good news is that these menus are mainly there to allow you to set up the camera exactly the way you want it to be set up – once you're done with that, you'll seldom need to delve into the menus again, courtesy of the large number of external controls as well as the excellent Super Control Panel, which is basically an interactive status display inherited from older Olympus cameras.

Chunky lugs for attaching the supplied shoulder strap hang at either side of the camera, thankfully out of the way of fingers and controls.

On the right hand flank, if viewing the camera from the back, we find a pair of covered ports for joint USB/AV output and mini HDMI output respectively.

Olympus OM-D E-M10 Mark IV

On the bottom of the E-M10 Mark IV is a screw thread for attaching a tripod in-line with the lens mount, with the lockable shared battery/memory card compartment alongside.

The BLS-50 rechargeable lithium-ion battery supplied with the E-M10 Mark IV is good for around 330 shots.

New to the Mark IV model is the very welcome ability to charge the camera via USB-C, the first time on the E-M10 series. This is a great feature for travel photographers or for using a powerbank out in the field.

Note that this camera is not compatible with the high-power USB PD standard, however, so make sure that you use a suitable powerbank.

Even more annoyingly, Olympus no longer include an external charger in the box, instead selling it as a pricey optional accessory.

There is the option to use all varieties of SD media card, up to and including SDXC cards, via the single card slot that's located within the battery compartment on the bottom of the camera.