6131***. VENUS. 10 Nov 2026. 7am shooting. settings. PART 2/2

 custom button shortcut

 

Mapping the 1.6x crop layout to a custom physical button on your Canon EOS R5 lets you toggle between full-frame and the magnified planetary view instantly without opening any menus.

Here is the exact way to set up this shortcut:

Step-by-Step Custom Button Mapping

1. Press the MENU button.
2. Navigate to the Custom Functions Menu (Orange Camera Icon).
3. Go to Tab 3.
4. Select Customize buttons.
5. Look at the column on the left (which lists the physical camera buttons) and select a button you want to map.
   • Recommendation: Use the M-Fn (Multi-function) button right next to the shutter, or the Depth-of-field preview button on the front of the camera. Both are easily reached while keeping your eye on the screen.
6. Press SET, scroll through the list of available functions, and select Crop/aspect ratio (represented by a small rectangle icon).
7. Press SET to confirm and exit the menu.

How to Use it on the Morning of Nov 10

Now, when you are aiming your 75-300mm lens at the eastern sky at 7:00 AM, you simply press your newly mapped button. A small overlay menu will appear instantly on your screen or viewfinder. Turn the main dial to jump straight from Full to 1.6x, and press the button again to lock it in.

This is incredibly useful if you need to quickly zoom out to find Venus in the bright blue morning sky, and then instantly snap back into a tight crop once you have centered the planet!

Now that your camera shortcuts and profiles are fully ready, would you like tips on how to use the R5's built-in focus peaking features to help guarantee a sharp edge on the Venusian disk, or do you want to finalize your video mode configurations?

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BUILT-IN FOCUS PEAKING

To lock in a razor-sharp edge on the tiny crescent of Venus, enabling Focus Peaking on the Canon EOS R5 is incredibly useful. This feature overlays a bright color on the sharpest high-contrast edges in your frame, providing an immediate visual indicator of precise manual focus.

Step-by-Step Focus Peaking Setup

1. Press the MENU button.
2. Navigate to the Red Shooting Menu (Camera Icon).
3. Go to Tab 2.
4. Select MF peaking settings.
5. Change Peaking from Off to On.
6. Set the options below:
   • Level: High (This makes the peaking lines much more distinct against the bright morning sky).
   • Color: Red or Yellow (These high-contrast colors are easiest to spot against a bright blue daylight sky).

The Golden Workflow for Planetary Sharpness

Because Venus is a very small target at 300mm, focus peaking works best when paired with digital magnification:

1. Mount your setup on a sturdy tripod and flip the switch on your 75-300mm lens to MF.
2. Press the physical Magnify Button (Magnifying Glass) on the back of the R5 once or twice to jump straight into 5x or 10x digital zoom on your LCD screen.
3. Center Venus on the screen.
4. Slowly rotate your lens's focus ring. As you approach perfect focus, you will see a bright red or yellow shimmer dancing along the sharp curvature of the Venusian disk.
5. Tweak the ring until that colored outline is at its brightest and thinnest, then take your shot or start your video recording.

Would you like to know how to save this entire custom setup (including the focus peaking and 1.6x crop) to your Custom Shooting Mode (C1) right now so it is locked in for the shoot, or are you all set for the morning?

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 gGOTO AF2 on page 2 for below instructions:

The manual focus peaking setup menu in the Canon EOS R5 is located under the Autofocus (AF) tab (represented by the red-orange AF icon) on page 2 (AF2) as [MF peaking settings]. [1, 2]

How to Access and Set It Up:

Press the MENU button on your camera. [1]
Navigate to the Red Autofocus Tab (usually the 2nd main tab group). [1, 2]
Go to page 2 (AF2). [1]
Select [MF peaking settings] and press SET. [1, 2]
Adjust the following options:
• Peaking: Set to On (or Off).
• Level: Choose HIGH ---between High or Low sensitivity.
• Color: Choose your outline color YELLOW--- (Red, Yellow, or Blue). [1, 2, 3, 4]

Note: For the peaking outline to appear, your lens or camera focus mode must be set to Manual Focus (MF). [1, 2]

 

SAVE to C1

To lock this entire setup in for your morning shoot, save your active manual configuration—including your 1.6x crop, exposure settings, and focus peaking overrides—directly to Custom Shooting Mode C1.

Follow these menu steps to save everything:

Step-by-Step Registration to C1

1. Verify the camera is currently set to M (Manual Mode), MF (Manual Focus), and that 1.6x Crop and Focus Peaking are active.
2. Press the MENU button.
3. Turn the main dial to the Setup Menu (Yellow Wrench Icon).
4. Navigate to Tab 5.
5. Select Custom shooting mode (C1-C3).
6. Select Register settings.
7. Choose Custom shooting mode: C1 and press the SET button.
8. Select OK to confirm.

Your Venus profiles are now completely locked into the C1 position on your top mode dial. On the morning of November 10, you can turn your camera on, spin the dial directly to C1, and your layout, peaking, and baseline settings will be instantly primed and ready to capture the planetary disk.