Sony a7 III Setup: Menu Settings to Change Before You Shoot

To set up a Sony a7 III, change a handful of settings before you head out: file type, autofocus, drive mode, exposure mode, and a few video options. Then put the controls you use most onto the Fn button, so the big menu stops getting in your way.

This guide walks you through each one in plain words. You do not need to understand everything today. Every setting here is something you can come back to and change later, and nothing you pick will break the camera.

Why the a7 III menu feels so big

If the menu made your head spin the first time you opened it, that is normal. Digital Camera World calls the a7 III menu system "pretty daunting" and counts no fewer than 35 screens split into five sections, plus a page you can customize with your own picks. The same review notes that most regular shooting settings can be reached through the Fn button on the back of the camera instead.

Think of the full menu as a big library and the Fn button as the shelf by your bed. You visit the library once to set things up. After that, you mostly grab what you need from the shelf.

If you want a wider map of how Sony menus are laid out, the Sony camera menu setup guide covers the basics.

Before you start: battery and lens

Charge the battery fully before you change anything. Digital Camera World reports that the a7 III can shoot over 700 photos on a single charge. The camera uses the FZ100 battery, the same type used in the newer a7 IV.

Next, turn on the camera's lens corrections if they are off. Digital Camera World notes that automatic in-camera corrections for color fringing and distortion are available on the a7 III. Color fringing is a thin colored outline, like a purple glow around dark tree branches against a bright sky. Letting the camera clean that up is one less thing for you to fix later.

Setting 1: Choose Raw for your photos

Your camera can save each photo as a JPEG, a Raw file, or both. A Raw file is like a cake you have not frosted yet: you still get to decide on the final look. A JPEG is the finished cake, already decorated by the camera.

For learning, Raw plus JPEG is a kind choice. You get a ready-to-share JPEG and a Raw file to rescue a photo that came out too dark or too bright.

Compressed or uncompressed Raw

The a7 III offers both compressed and uncompressed Raw. Digital Camera World reports it can capture up to 177 JPEGs, 89 compressed Raw files or 40 uncompressed Raw images in a single burst. A buffer is like a waiting room: photos sit there until the card has time to save them. Compressed Raw takes up less room in that waiting room, so you can hold the shutter down longer.

If you shoot kids, pets or sports, start with compressed Raw. If you mostly shoot still things like landscapes, uncompressed is fine too.

Setting 2: Turn on Eye AF and let the camera help

Blurry or soft photos are one of the most common worries for new owners. Often the camera simply focused on the wrong thing, like the wall behind a person instead of the person.

The a7 III has 693 phase-detection autofocus points and Eye AF, which can detect and track your subject's eyes. Digital Camera World notes that the a7 III shares autofocus technology with Sony's A9, a professional sports camera. Its point is simple: the camera helps you get sharp results, so you can put your attention on exposure instead.

Eye AF works like a friend who always points at the most important part of a portrait. Turn it on, and practice by photographing someone walking slowly toward you.

If a photo still comes out soft, that is useful information, not a failure. Look at what is sharp in the frame. If the background is crisp and the face is not, the camera grabbed the wrong spot. If nothing is sharp, the cause is usually movement, which Setting 4 covers.

Setting 3: Pick a drive mode for moving subjects

Drive mode decides whether one press of the button takes one photo or a quick string of them. For a sleeping cat, single shot is fine. For a child on a swing, continuous shooting gives you more chances at the perfect moment.

The a7 III can shoot up to 10 frames per second in continuous mode. Digital Camera World notes that the viewfinder image at 10fps may not be responsive enough for fast or erratic subjects, and that an 8fps live view mode gives a faster, more stable viewfinder image. For a beginner following a moving subject, that slightly slower mode is often easier to use, because you can see what you are aiming at.

Earlier A7 models locked you out of the menus while the buffer was full, but Sony fixed that on the a7 III. You can keep adjusting settings while the camera finishes saving a burst.

Setting 4: Step out of auto with aperture priority

Leaving auto mode can feel like taking the training wheels off. The trick is to take them off one at a time.

Three settings work together to make a photo bright or dark:

• Aperture is like the pupil of your eye. A wide opening lets in lots of light and blurs the background. A small opening keeps more of the scene sharp.
• Shutter speed is like a door opening and closing. A quick door freezes motion. A slow door lets movement smear.
• ISO is like turning up the volume on a quiet song. You hear more, but you also hear more hiss, which in photos looks like grain.

Start in aperture priority. You choose the aperture, and the camera chooses the shutter speed for you. That way you only learn one setting at a time. Once that feels comfortable, try shutter priority for moving subjects, then full manual.

When your photos come out blurry

Blur usually has one of three causes, and each has a simple fix:

• Your hands moved. The whole photo looks a little smeared. Use a faster shutter speed or brace your elbows against your body. The a7 III also has a built-in stabilizer that works with stabilized lenses.
• Your subject moved. The background is sharp but the person is smeared. Use a faster shutter speed.
• Focus landed in the wrong place. Something is sharp, just not the right thing. Go back to Eye AF in Setting 2.

Each blurry photo tells you which of these happened. Treat it like a clue, not a grade.

Setting 5: Set up video the simple way

The a7 III records 4K video across the full width of the sensor and then shrinks it down to 4K, so Digital Camera World reports no annoying crop and no pixel binning. The same publication also notes a small crop if you shoot 4K at 30p. Videomaker likewise says the newer a7 IV removed the crop the a7 III had in 4K 30p. A crop makes your shot look a bit more zoomed in, so step back a little if you lose the edges of your scene.

Picture profiles: HLG and S-Log3

The a7 III offers an HLG (Hybrid Log-Gamma) profile for instant 4K HDR playback on compatible devices, plus S-Log3 for increased dynamic range of up to 14EV for editing and grading later. Dynamic range is how much detail the camera keeps in both the dark parts and the bright parts of a scene, like seeing both a person's face and the clouds behind them.

S-Log3 footage looks gray and washed out straight from the camera. That is on purpose: it is like a coloring book page you fill in later. If you are new to editing, start with the standard look and save S-Log3 for when you are ready to color your footage.

Autofocus for video

Videomaker notes that the newer a7 IV gives much smoother, less robotic focus pulls than the a7 III. On the a7 III, practice moving focus between two people at a steady pace and see how it looks before relying on it for something important.

For a general walkthrough of video basics on any body, see the beginner's guide to shooting video with any camera.

Setting 6: Load your favorites onto the Fn button

This is the step that makes the camera feel friendly. Because most regular shooting settings can be reached through the Fn button, take five minutes to put your top picks there:

• File type (Raw, JPEG or both)
• Focus mode and focus area
• Drive mode
• ISO
• Picture profile for video

Then use the customizable menu page Digital Camera World mentions for the settings you change less often but still want close by. Think of it like a kitchen: everyday spoons in the top drawer, the holiday platter on a higher shelf.

Handling tips before your first outing

Digital Camera World describes the a7 III as remarkably small for a full-frame camera, but says it feels front-heavy with larger Sony lenses such as the FE 24-105mm f/4 G OSS or FE 24-70mm f/2.8 GM. It suggests the optional VG-C3EM battery grip, especially for telephoto sports work.

The a7 III has a tilting screen rather than a fully flip-out one, according to Videomaker's comparison with the a7 IV. That works well for shooting low or high, but it will not flip forward to face you for selfies or vlogging.

a7 III, a7 IV or a7 V: a quick comparison

If you are still deciding, or wondering whether to upgrade later, here is how the three bodies line up in the research.

Feature	Sony a7 III	Sony a7 IV	Sony a7 V
Launched	February 2018	October 2021	December 2, 2025
Resolution	24MP	33MP	33MP
Top burst speed	10fps	10fps	30fps
4K video	Full width, small crop at 30p	Full width up to 30p, Super-35 crop at 60p	4K 60fps without a crop
Phase-detection AF points	693	759	Not listed in this research
Screen	Tilt	Fully articulating	Moves more than one way

Digital Camera World sums up the trade-off this way: the a7 IV may be better on paper, but the a7 III gives about 90% of the performance at 60 to 70% of the cost. If your camera is already in your hands, the settings above will get much more out of it than a new body would.

If you move up to a newer body, the Sony a7 IV first-time setup guide and the Sony a7 IV vs a7 V comparison pick up where this one leaves off.

A first practice walk

Once your settings are in, take the camera on a short walk with no pressure to come home with great photos. Try one thing at a time:

1. Take ten photos of a friend or pet with Eye AF on, and check where focus landed.
2. Switch to aperture priority and photograph the same flower at the widest and smallest aperture your lens allows. Compare the backgrounds.
3. Find something moving, like traffic or a dog, and try a burst in continuous mode.
4. Record a short clip in the standard picture profile, then the same clip in S-Log3, and look at the difference on your computer.

Every photo that does not work shows you which setting to adjust next. That is how the camera stops feeling like a puzzle and starts feeling like yours.