A 4GB SD card can hold approximately 1,300 to 2,600 photos, depending on image quality and resolution.
A 4GB SD card's photo capacity varies significantly based on file size, which is determined by camera resolution, file format, and compression settings. Higher resolution photos with less compression take more space, reducing total capacity. JPEG files typically range from 1.5MB to 3MB, while RAW files can be 10MB to 25MB or larger.
Photo Capacity by File Type
- JPEG (3MB average): 1,300-1,400 photos
- RAW (15MB average): 260-270 photos
- HEIF/HEIC (2MB average): 2,000 photos
Comparison Table: 4GB SD Card Capacity
| File Type | Average Size | Estimated Photos |
|---|---|---|
| JPEG Standard | 2MB | 2,000 |
| JPEG High Quality | 3MB | 1,300 |
| RAW (12MP) | 12MB | 330 |
| RAW (24MP) | 24MB | 165 |
Factors Affecting Photo Storage
- Resolution: Higher megapixels create larger files
- Compression: More compression reduces quality but increases capacity
- File format: RAW files are larger than JPEG or HEIF
- Camera settings: Quality settings directly impact file size
Tips for Maximizing Storage
- Use lower quality settings for casual photography
- Shoot in JPEG instead of RAW when editing isn't needed
- Consider using multiple smaller SD cards instead of one large card
- Regularly transfer photos to free up space