Understanding memory card capacity is crucial for photographers. How Many Photos Will 64gb Hold, and how does this compare to other sizes like 32GB, 128GB, or even 256GB? This guide will break down the factors influencing storage capacity and help you choose the right memory card for your needs.
Overhead still life photography shot of a camera, notebook, pen, coffee cup and memory card
JPEG vs. RAW: Impact on File Size and Storage
The number of photos a 64GB card can hold depends largely on the file format you use: JPEG or RAW. These formats differ significantly in file size, impacting how many images you can store.
Understanding JPEG and RAW Formats
JPEG (Joint Photographic Experts Group) is a compressed file format that reduces file size by discarding some image data. This results in smaller files, ideal for web use and general sharing. However, this compression limits the flexibility for editing in post-processing.
RAW files, on the other hand, contain all the data captured by your camera’s sensor. This uncompressed format preserves maximum image quality and allows for extensive adjustments during editing. Consequently, RAW files are significantly larger than JPEGs. Different camera manufacturers use their own proprietary RAW formats (e.g., CR2 for Canon, NEF for Nikon), while DNG (Digital Negative) is a universal RAW format.
File Size Comparison: JPEG vs. RAW
A typical JPEG from a 20MP camera might range from 5-10MB, depending on the compression level. In contrast, a RAW file from the same camera could be around 30MB. This threefold difference in size significantly impacts storage capacity.
Image of a camera and memory card on a white background.
Calculating Photo Capacity for Different Memory Card Sizes
Based on the average file sizes mentioned above, here’s an estimate of how many photos different memory card sizes can hold:
For RAW Files (approximately 30MB each):
- 32GB: ~1,092 photos
- 64GB: ~2,184 photos
- 128GB: ~4,368 photos
- 256GB: ~8,732 photos
For JPEG Files (approximately 7MB each):
- 32GB: ~4,700 photos
- 64GB: ~9,400 photos
- 128GB: ~18,800 photos
- 256GB: ~37,600 photos
Remember, these are estimates. Actual capacity may vary depending on factors like camera settings, image content, and compression levels. Keep in mind that 1GB equals 1024MB, and 1MB equals 1024 bytes.
Choosing the Right Memory Card: Size, Speed, and Type
Besides storage capacity, consider these factors when choosing a memory card:
Memory Card Types
- CompactFlash (CF): Larger in size, commonly used in professional DSLRs.
- Secure Digital (SD): Widely compatible with most cameras and devices.
- MicroSD: Smaller than SD cards, often used in action cameras, drones, and smartphones; adaptable to SD card slots.
- CFexpress: Offers the fastest read/write speeds, ideal for high-resolution video and burst shooting.
A SanDisk Micro Secure Digital SD 128gb memory card.
Memory Card Speed
Speed is crucial for continuous shooting and recording high-quality video. Look for speed ratings (e.g., UHS-I, UHS-II, V30) to ensure your card can handle your camera’s data output.
Conclusion: Finding Your Ideal Memory Card
A 64GB memory card offers a good balance between capacity and cost for many photographers. It can hold a significant number of photos, especially if shooting in JPEG. However, if you primarily shoot RAW or high-resolution video, consider larger capacities like 128GB or 256GB. Always choose a card type compatible with your camera and prioritize speed according to your shooting style. Ultimately, the best memory card for you depends on your individual needs and shooting preferences.
