How many gigabytes do i need for mirrorless camera

Learn how to determine the right amount of storage space in gigabytes for your mirrorless camera to ensure you capture all your precious moments without running out of memory.

Choosing the right memory card size for your mirrorless camera is crucial for ensuring you have enough storage space to capture all your precious moments.

With the rise of high-resolution images and 4K video recording capabilities in mirrorless cameras, it’s important to consider how much storage space you’ll need to accommodate these larger file sizes.

Factors such as your shooting habits, the resolution of your camera, and the length of your video recordings all play a role in determining the ideal gigabyte size for your memory card.

Understanding Storage Requirements

When choosing the right amount of storage for your mirrorless camera, it’s important to consider several factors. The resolution of your camera, the file format you shoot in, and how often you shoot are all important considerations.

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Typically, a higher resolution camera will produce larger file sizes, so if you have a camera with a high megapixel count, you will need more storage space. Additionally, shooting in RAW format will also require more storage space compared to shooting in JPEG format.

If you shoot frequently, you will accumulate more photos and videos, which will require more storage space. It’s recommended to have at least 32GB of storage as a minimum, but if you shoot a lot or want to have extra space for backups, you may want to consider 64GB or more.

Remember to also factor in the convenience of having extra storage space for longer trips or events where you may not have access to transfer files to a computer or external drive. Having ample storage space ensures that you can capture all the moments without worrying about running out of space.


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Factors Impacting File Size

When considering how many gigabytes you need for a mirrorless camera, it’s important to understand the factors that impact file size. Here are some key factors to keep in mind:

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1. Resolution:

The resolution of your camera plays a significant role in determining file size. Higher resolution images contain more pixels and therefore require more storage space. Cameras with higher megapixel counts will produce larger files.

2. File Format:

The file format you choose to shoot in can also affect file size. RAW files, for example, contain more data and are larger in size compared to JPEG files. Consider the file format you prefer to shoot in and how it will impact your storage needs.

Factor Impact on File Size
Resolution Higher resolution results in larger files
File Format RAW files are larger than JPEG files

Choosing the Right Memory Card

When it comes to choosing the right memory card for your mirrorless camera, there are a few key factors to consider. First and foremost, you’ll want to make sure you have enough storage space to accommodate the high-resolution images and videos that your camera is capable of capturing. This means opting for a memory card with a larger capacity, such as 64GB or 128GB, depending on your shooting habits.

Additionally, pay attention to the speed class of the memory card. A higher speed class will allow for faster write speeds, which is essential for shooting high-quality video or burst mode photography. Look for memory cards with a UHS-I or UHS-II rating for optimal performance.

It’s also important to choose a reputable brand when purchasing a memory card. Stick to well-known brands like SanDisk, Lexar, or Sony to ensure reliability and compatibility with your camera.


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Lastly, consider investing in multiple memory cards so you always have a backup on hand. This is especially important for professional photographers or those who shoot in remote locations where it may be difficult to purchase a new card quickly.

Estimating Storage Needs

When estimating storage needs for a mirrorless camera, it’s important to consider the file size of the images and videos you will be capturing. Mirrorless cameras typically produce high-quality images with large file sizes, especially if shooting in RAW format.

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On average, a RAW image from a mirrorless camera can range from 20-50 MB, while a JPEG image can be around 5-10 MB. Video files will also vary in size depending on the resolution and frame rate.

To estimate your storage needs, take into account how many photos and videos you plan to capture in a typical shooting session. Calculate the total size of these files based on the average file sizes mentioned above.

For example, if you plan to shoot 100 RAW images at 30 MB each and 10 minutes of 4K video at 400 MB per minute, you would need approximately 3.5 GB of storage for that session.

It’s always better to have more storage space than you think you’ll need, so consider getting a larger capacity memory card or investing in external storage options to ensure you never run out of space while shooting.

Calculating Gigabytes per Hour

When determining how many gigabytes you need for your mirrorless camera, it’s important to calculate the amount of data your camera will generate per hour of recording. This calculation can help you estimate the storage capacity required for your photography or videography projects.

Steps to Calculate Gigabytes per Hour:

  1. Determine the bitrate of your camera: Find out the bitrate at which your camera records videos or captures images. This information is usually available in the camera specifications.
  2. Calculate the data generated per hour: Multiply the bitrate (in megabits per second) by 3600 (seconds in an hour) to get the data generated per hour in megabits.
  3. Convert megabits to gigabytes: Divide the data generated per hour in megabits by 8,000 to convert it to gigabytes.

Using these steps, you can accurately estimate the storage capacity needed to store the media captured by your mirrorless camera based on its recording bitrate and the duration of your shooting sessions.

Bitrate (Mbps) Data per Hour (GB)
50 22.5
100 45
200 90

Considering Shooting Frequency

When determining how many gigabytes you need for your mirrorless camera, it’s important to consider your shooting frequency. If you are someone who takes a few photos here and there on special occasions, you may not need as much storage space compared to a professional photographer who shoots regularly.

Below is a rough estimate of how many gigabytes you might need based on different shooting frequencies:

Shooting Frequency Estimated Gigabytes Needed per Month
Occasional shooter (1-2 times a month) 10-20 GB
Regular shooter (weekly) 30-50 GB
Professional shooter (daily) 100+ GB
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Tips for Efficient Data Management

Managing data efficiently is crucial when dealing with large files from a mirrorless camera. Here are some tips to help you streamline your data management process:

1. Organize Your Files

Start by creating a clear folder structure on your computer or external hard drive. Organize your files by date, event, or project to easily locate and access them when needed.


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2. Backup Regularly

Make it a habit to backup your files regularly to prevent data loss. Use cloud storage services or external hard drives to create additional copies of your important photos and videos.

3. Delete Unnecessary Files

Periodically review your files and delete any duplicates or unnecessary photos and videos. This will help free up storage space and make it easier to manage your data.

By following these tips, you can effectively manage the data from your mirrorless camera and ensure that your files are organized and secure.

Organizing and Backing Up Files

When using a mirrorless camera, it’s essential to have a system in place for organizing and backing up your files to ensure that your precious photos and videos are safe and easily accessible. Here are some tips to help you keep your files organized and secure:

1. Create a Folder Structure

Start by creating a logical folder structure on your computer or external hard drive to store your photos and videos. You can organize your files by date, event, or any other method that makes sense to you. This will make it easier to find specific files later on.

2. Backup Regularly

It’s crucial to back up your files regularly to prevent data loss in case of hardware failure or accidental deletion. Consider using cloud storage services, external hard drives, or dedicated backup software to create backups of your files. Make it a habit to back up your files after each photo session to ensure that no data is lost.

By following these tips and staying organized with your files, you can enjoy peace of mind knowing that your precious memories are safe and secure.

Carmen J. Moore
Carmen J. Moore

Carmen J. Moore is an expert in the field of photography and videography, blending a passion for art with technical expertise. With over a decade of experience in the industry, she is recognized as a sought-after photographer and videographer capable of capturing moments and crafting unique visual narratives.

  1. Jason C. Campbell June 18, 2026 at 1:10 pm

    The article mentions that RAW files are larger than JPEGs. Can anyone clarify how much larger they actually are on average?

    • From my experience, RAW files can be about 2 to 5 times larger than JPEGs, depending on the camera. For example, if a JPEG is around 10MB, the RAW could easily be 20-50MB.

  2. I've been using a 128GB card for my mirrorless camera, and it's been perfect for my needs. I shoot a mix of JPEG and RAW, and I often film in 4K. It allows me to shoot all day without worrying about running out of space. I also keep a backup card just in case because you never know when you'll need it.

  3. I've been using a 128GB card for my mirrorless camera, and it's been perfect for my needs. I shoot a mix of JPEG and RAW, and I often film in 4K. It allows me to shoot all day without worrying about running out of space. I also keep a backup card just in case because you never know when you'll need it.

  4. Alicia Porter June 30, 2026 at 6:13 pm

    I'm considering getting a mirrorless camera, but I'm unsure how to pick the right memory card size. If I shoot in RAW, how much storage would I need for a day of shooting?

    • Based on my experience, for a day of shooting in RAW, I'd recommend at least 64GB. I usually shoot around 100 photos in RAW, and it fills up quickly.

  5. I usually shoot just a few times a month. A 32GB card has been plenty for my needs since I mainly shoot JPEG.

  6. How do I determine the bitrate for my specific mirrorless camera? Is it usually listed in the manual or on the manufacturer's website?

    • Avatar photo
      Carmen J. Moore August 26, 2026 at 4:35 pm

      Great question! The bitrate for your camera is typically found in the specifications section of the camera manual or on the manufacturer's website. Look for details under video settings.

  7. I disagree with the idea that 32GB is a minimum. For someone who shoots regularly, that’s simply not enough. I think 64GB should be the starting point, especially if you’re shooting RAW or 4K video.

    • You raise a valid concern! For frequent shooters or those using high-quality settings, starting with 64GB is indeed a wiser choice to avoid running out of space.

  8. I recently upgraded to a mirrorless camera and initially thought 32GB would be enough. After a weekend trip shooting RAW, I found myself constantly running out of space. Now I use a 128GB card, and it's a game changer. I also keep a backup card just in case!

  9. I’m considering getting a mirrorless camera but confused about how much storage I actually need. If I want to shoot a lot of 4K videos, is 64GB enough?

  10. How does the storage requirement differ between shooting in RAW and JPEG? Is it really that significant?

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