85mm f 1.2 L lens only opens to f/2.0 on EOS R3

[negativeh]

Just bought this and attached it to my Canon R3.. When changing the apertures it only opens to 2.0. What am I doing wrong?

[shadowsports]

Greetings,

What shooting mode are you in when doing this?  Try Av.

Custom Settings 2 allows you to specify the ISO range.

Set aperture range

Set aperture range

You can set the aperture value range. In [Flexible-priority AE], [Aperture-priority AE], [Manual exposure], or [Bulb] mode, you can set the aperture value manually within your specified range. In [Program AE] and [Shutter-priority AE] mode, or in [Flexible-priority AE] mode with the aperture value set to [AUTO], the aperture value is set automatically within your specified range. Select [OK] to register the setting.

Max. aperture

Can be set in a range of f/1.0–f/64.

Min. aperture

Can be set in a range of f/91–f/1.4.

• Canon : Product Manual : EOS R3 : Custom Function Setting Items (start.canon)

[Danny]

Thanks for joining the conversation, negativeh!

So that the Community can help you better, we need to know whether you're using the EF version of this lens or the RF version. That, and any other details you'd like to give will help the Community better understand your issue!

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Thanks and have a great day!

[ebiggs1]

Rick most likely has the answer check the aperture range. See if it is set to f2 to ?.