Canon EOS 5DS

EF mountDSLRFull frame

Can FoCal calibrate my EOS 5DS?

Yes: FoCal finds the best AF Microadjustment value for each lens.

The EOS 5DS doesn’t let FoCal change AF Microadjustment over USB, so FoCal tells you the value to set on the camera when it needs it (User Assisted Mode), with separate wide and telephoto values for zoom lenses.

And FoCal can check the rest of your kit.

Supported in FoCal 2.0 and later, over Micro-USB (USB-3). Tests: Calibration Check, AF Consistency, Aperture Sharpness, MultiTest, Stabilisation Test and Dust Analysis.

76.9%

Tuning an EOS 5DS would improve almost 8 out of 10 lenses.

And 47.2% would improve significantly. From calibration results FoCal users have shared with FoCal IQ.

From FoCal IQ: see the figures

Significant47.2%
Noticeable29.7%
Minimal14.8%

Bought it second-hand?

You don’t know how a used EOS 5DS has been treated. Cameras and lenses get knocked, drift and wear, usually gradually. FoCal shows you where yours stands.

  1. Calibrate it with your lenses

    Any AF Microadjustment values already on the camera were set by someone else, for their lenses. FoCal finds the right value for each of yours.

  2. See how it performs

    AF Consistency shows how repeatable the autofocus is, and Aperture Sharpness how sharp each lens is across its apertures.

  3. Look at the sensor

    Dust Analysis counts the dust spots and shows how much they matter, before you pay for a clean.

  4. Then keep an eye on it

    With FoCal Pro, a regular Kit Health Check tracks every result, so you’ll see if anything changes.

About the Kit Health Check

What you can do

Seven tests for the EOS 5DS

Focus Calibration

Finds the best AF Microadjustment value for each lens. The camera won’t let FoCal set it over USB, so you change it when FoCal asks.

Available

Calibration Check

A one-click check of your EOS 5DS and lens. In a minute or so it shows whether your kit is working as it should.

Available

AF Consistency

How repeatable is the EOS 5DS’s autofocus? Defocus between shots in one or both directions and see.

Available

Aperture Sharpness

What happens to sharpness as you change aperture, and which aperture is the sharpest.

Available

MultiTest

A two-dimensional view of the lens: focus position across the aperture range, showing any focus shift.

Available

Stabilisation Test

How much does stabilisation really help? See the quality change as the shutter speed slows.

Available

Dust Analysis

Count the dust spots on the sensor and see how much they matter, before you decide on a clean.

Available

Snapshots

This feature is not yet available for the EOS 5DS.

Not available

Calibration Check (AF System Check) is free in FoCal Mobile.

FoCal IQ statistics

Tuning an EOS 5DS would improve almost 8 out of 10 lenses

From calibration results FoCal users have shared with FoCal IQ: how far each EOS 5DS and lens was from the best AF Microadjustment value before FoCal tuned it.

EOS 5DS with EF-mount lenses

76.9%

of lenses would benefit noticeably from FoCal calibration, and 47.2% would improve significantly.

Significant47.2%
Noticeable29.7%
Minimal14.8%

Source: FoCal IQ: EOS 5DS (EF mount), 1,725 results.

Significant: 4 or more AF Microadjustment units. Noticeable: 2 or 3 units. Minimal: no more than 1 unit.
Why your EOS 5DS needs it · an illustrated guideYour DSLR doesn’t measure focus where it takes the pictureHow a DSLR focuses, what goes wrong, how to fix it, and the evidence from FoCal users.Read the guide
How to set it up

Setting up your EOS 5DS for FoCal

Connecting the cameraMicro-USB (USB-3)
  1. Use a good Micro-USB (USB-3) cable

    FoCal controls the EOS 5DS over USB. Use the cable that came with the camera or a good-quality one, and avoid extension cables: a poor cable is the first thing we suggest changing if FoCal is unreliable.

Permissions on macOSfirst connection

When you first connect, allow access to the Photos Library and to Removable Media. FoCal needs both to talk to the camera.

  1. If a permission shows as Denied

    In FoCal, open Help then Settings, expand Advanced and click Reset Application Permissions. Restart FoCal and it will ask again.

AF Microadjustment on the EOS 5DSwhere to find it
  1. Open AF Microadjustment

    Press MENU and go to the AF 5 tab. Select AF Microadjustment and press SET.

    Camera menu: the AF 5 tab with AF Microadjustment selected
  2. Choose “Adjust by lens”

    FoCal sets a value for each lens, so select Adjust by lens, then press INFO.

    The AF Microadjustment options, with Adjust by lens selected
  3. Set the value

    For a prime lens, change the value on the screen.

    The adjustment scale for a prime lens

    For a zoom lens, select W (wide) or T (telephoto), as FoCal asks, and press SET. Then change the value with the rear dial.

    The adjustment screen for a zoom lens, with W and T values
  4. Save it

    Press SET to save the value, then MENU to go back. The values you chose are shown.

    The Adjust by lens screen showing the saved values
  5. Tell FoCal you’re done

    Use the camera hotkey: see User Assisted Mode.

About User Assisted Modechanging the value

FoCal controls almost every setting it needs on the EOS 5DS, but the camera doesn’t let it change AF Microadjustment over USB. During calibration or MultiTest, FoCal asks you to change it a few times.

FoCal asking for the AF adjustment value to be changed on the camera
  1. Listen for the value

    While FoCal’s request is on screen, the camera controls work. Voice prompts are on to start with, so your computer reads out the change you need.

  2. Change it on the camera

    Press MENU to open the menu, SET to select AF Microadjustment and INFO to change it. Set the value and press SET.

    The menu remembers where you were, so after the first time it’s quick.

  3. Use the camera hotkey

    Half-press the shutter button to go back to shooting, then turn the aperture or shutter speed dial by one click. FoCal sees the change, waits a moment for the camera to settle, puts the setting back and carries on.

    The dial to turn on a Canon camera to use the hotkey
Your test space5 steps
  1. Choose a solid floor

    Ground-floor rooms vibrate less when people move about or traffic passes, and vibration affects the results.

  2. Fix the target to a wall at lens height

    Keep it flat so it can’t move. A FoCal Hard Target is what we use for all our development and testing.

  3. Light it well and steadily

    Avoid fluorescent and LED lights, which can flicker in a way you can’t see but the camera can, and changeable daylight. FoCal copes with small changes in light, not big ones.

  4. Use a sturdy tripod

    If your tripod has a hook under the centre column, hang something heavy from it. With big lenses, mount the lens’s tripod collar, not the camera.

  5. Set the right distance

    The Target Distance Tool in FoCal tells you how far from the target to be, with or without the camera connected.

Target Setup, FoCal’s guided setup, checks the position, light and settings before a test. More in the FoCal help.

Camera set-up4 steps
  1. Charge the battery to at least half

    Low batteries can make tests fail or the camera behave strangely.

  2. Take off any battery grip

    Grips add vibration on a tripod.

  3. Aim the centre focus point at the target

    Roughly is fine: Target Setup confirms the position.

  4. Cover the eyepiece

    This stops stray light getting in through the viewfinder and changing the exposure.

Camera settings7 steps
  1. Photo mode

    If the EOS 5DS has a photo/video switch, set it to Photo.

  2. Remove any mode limits

    If the camera lets you limit its options, allow Aperture Priority and Manual, Spot and Matrix/Evaluative metering, and all apertures, shutter speeds and ISO values.

  3. Aperture Priority

    Most FoCal tests use it. FoCal asks if a test needs something else.

  4. One Shot autofocus

    Set the autofocus mode to One Shot: a half-press of the shutter button locks focus and then stops.

  5. A single, centre focus point

    No automatic point selection: you should see one fixed AF point, in the centre.

  6. Focus limiter off

    FoCal may use the lens’s whole focus range, so set any focus limiter on the lens to off or the full range.

  7. Stabilisation off

    Turn off any stabilisation on the lens: it can make the results less accurate.

Specifications

Canon EOS 5DS specifications

Camera model
EOS 5DS
Manufacturer
Canon
FoCal versions
FoCal 2.0 and later
USB type
Micro-USB (USB-3)
Expected shutter life
150,000 actuations
Diffraction-limited aperture
f/6.6
Sensor size
Full frame: 36.0 × 24.0 mm (864.0 mm²)
Sensor resolution
8688 × 5792 pixels (50.3 MP)
Pixel size
4.1µm
Sensor type
Bayer
Lens mount
EF mount
Base ISO
100
Processor
Dual DIGIC 6
Released
June 2015
In-body stabilisation
No
Products

FoCal for the EOS 5DS

With the EOS 5DS, FoCal Plus gives you autofocus calibration and Calibration Check. FoCal Pro adds the rest of the Kit Health Check, with trends over time.

FoCal Plus

Quick and simple autofocus tuning.

  • Autofocus calibration
  • Calibration Check
  • Not included: AF Consistency, Aperture Sharpness, MultiTest, Stabilisation Test and Dust Analysis
  • Not included: Reports, History and trends
FoCal Plus prices

FoCal Pro

Tune, analyse and compare. Everything you need for a Kit Health Check.

  • Everything in FoCal Plus
  • AF Consistency, Aperture Sharpness, MultiTest, Stabilisation Test and Dust Analysis
  • Reports, History and Analysis trends
FoCal Pro prices