Olympus OM-1 Card Slot Settings: Standard, Auto Switch, and Dual Modes

The Olympus OM-1’s two SD card slots can back up, split, or roll over automatically between cards — but the default Standard setting doesn’t do what most people expect. Here’s how each of the six slot modes actually behaves.

. Photo by David Coleman - havecamerawilltravel.com
Text & Photos By David Coleman
Last Revised & Updated:
Filed Under: Mirrorless Cameras

I MAY get commissions for purchases made through links in this post.

Have Camera Will Travel // Newsletter

Practical field notes, hands-on gear tests.

The Olympus OM-1 has two SD card slots. It’s not required that you fill both of them — the camera will work just fine with only one SD card. But there are advantages do filling them both.

Specifically, it gives you flexibility on how the slots are used. You can:

  • Record only to a specific card
  • Record in sequence, starting on one card and them automatically moving onto the next one when the first one is full
  • Save two versions of each image with different sizes and compression ratios, one type to each card
  • Save duplicate versions of each image as a real-time backup

Here’s a rundown of the options you have for choosing how the memory card slots behave when you have both of them filled.

Changing the card slot settings on the Olympus OM-1

You can find this setting on the camera’s menu under:

Wrench/Spanner Icon > 1. Card/Folder/File > Card Slot Settings
Olympus OM-1 Card/Folder/File menu with Card Slot Settings highlighted in the settings tab

It’s right next to the card formatting setting.

Card slot setting options on the Olympus OM-1

Standard

This is the default setting. It records only to the designated card. This sometimes causes confusion (including for me), because it won’t roll over automatically to the next card when the first card fills up (which is, to me, a more logical default setting).

Olympus OM-1 Standard card slot option screen showing recording to assigned card only

Auto Switch

This will automatically roll over to the second card when the first card fills up.

Olympus OM-1 Auto Switch setting screen explaining switching cards when one becomes full

Dual Independent Down

Saves to both cards applying their respective settings. If one card becomes full, the other cannot be saved to either.

Olympus OM-1 Dual Independent Down setting screen for saving separately to both SD cards

Dual Independent Up

Saves to both cards applying their respective settings. Even if one card becomes full, the other can be saved to.

Olympus OM-1 Dual Independent Up setting screen allowing continued saving if one card fills

Dual Same Up

Saves to both cards applying same settings. Even if one card becomes full, the other card still be saved to.

Olympus OM-1 Dual Same Up setting screen for saving identical files to both card slots

Dual Same Down

Saves to both cards applying same settings. If one card becomes full, the other cannot be saved to either.

Olympus OM-1 Dual Same Down setting screen saving matching files to both SD cards

SD cards for the Olympus OM-1

I’ve put together a much more detailed post on recommendations for SD cards for the Olympus for the OM-1 separately. But here’s the quick version.

The OM-1 has two SD card slots. It’s not required to fill both slots — the camera will work just fine with only one memory card — but there are advantages to doing so.

You can use SDHC or SDXC. As a practical matter, SDXC cards are probably the more logical choice simply because that designation applies to SD cards with storage capacities of 64GB and up.

. Photo by David Coleman - havecamerawilltravel.com

Have Camera Will Travel // Newsletter

Practical field notes, hands-on gear tests, and the fun of exploring the world with a camera in hand.

Both SD card slots in the OM-1 are UHS-II slots. So to take full advantage of the camera’s capabilities, it makes sense to use UHS-II SD cards in this camera.

  1. SanDisk Extreme Pro V60 UHS-II
  2. ProGrade Digital Gold V60
  3. Lexar Professional Silver Pro V60 UHS-II
SanDisk Extreme PRO V60 UHS-II
  • Type: SDXC
  • Video Speed Class: V60
  • UHS Bus Interface Type: UHS-II
  • Maximum Read Speed: 300 MB/s
  • Storage Capacities: 64GB, 128GB, 256GB, 512GB, 1TB, 2TB

Check current price and availability at:

ProGrade Digital SDXC UHS-II V60 250R Gold
  • Type: SDXC
  • Video Speed Class: V60
  • UHS Bus Interface Type: UHS-II
  • Maximum Read Speed: 250 MB/s
  • Storage Capacities: 128GB, 256GB, 512GB, 1TB

Check current price and availability at:

Lexar Professional SILVER PRO V60 UHS-II
  • Type: SDXC
  • Video Speed Class: V60
  • UHS Bus Interface Type: UHS-II
  • Maximum Read Speed: 280 MB/s
  • Storage Capacities: 128GB, 256GB, 512GB, 1TB

Check current price and availability at:

Recommendations checked: August 2026

Price & availability of the Olympus OM-1

The Olympus OM-1 has an MSRP of $2199 for the body. It’s also available bundled with an impressive OM SYSTEM M.Zuiko Digital ED 12-40mm f/2.8 PRO II kits lens (MSRP of $2799 on the bundle).

Olympus OM-1 accessories

These are the model numbers for the official accessories for the Olympus OM-1.

  • Battery: BLX-1 lithium-ion rechargeable battery
  • External Charger: BCX-1 (or SBCX-1, which includes a spare battery)
  • USB-AC Adapter: F-7AC AC wall adapter
  • Grip/Extended Battery Holder: HLD-10 grip
  • Remote: RM-WR1 wireless remote control
  • Eyecup: EP-18
  • Flash:
    • FL-LM3 electronic flash (the smallest of the flash units)
    • FL-900R electronic flash unit
    • FL-700WR electronic flash unit
    • STF-8 macro flash
    • FC-WR wireless commander
    • FR-WR wireless receiver
Found this helpful? Personalize your search results.
Add as Preferred Source
Profile photo of David Coleman | Have Camera Will Travel | Washington DC-based Professional Photographer

David Coleman

I take photos for a living. Now based in Washington, D.C., I have spent the last 30+ years shooting across seven continents — from underwater environments to mountain peaks. My images and time-lapses have appeared in major newspapers, magazines, museums, professional sports stadiums, and even on massive architectural scrims covering world-famous buildings.

I started this site in 2009 to field-test gear, share problem-solving solutions, and share what I've learned in shooting around the world. I only review gear and services I have personally used. No armchair opinions — just real-world experience. Because, for me, the fun is in the making of the photo.

You can see my travel photography here, license my images or buy prints here, or sign up for my Substack.

Leave a Comment