格式 |
JPG |
HEIC |
公司 |
Joint Photographic Experts Group |
|
说明 |
差不多所有数码相机都会有把图像保存为JPEG的选项。JPEG格式支持每色8位(红,绿,蓝),文件大小也比较小。只要不使用重度压缩,图像质量不会受太大的影响。不过JPEG文件如果不断被修改,保存的话,很有可能会退化。若您计划以后修改照片图像,或不能接受图像失真,把它们保存为非JPEG的无损图像格式的话会比较好。话虽如此,JPEG大致上是最适合网络发布的格式。 |
High Efficiency Image File Format (HEIF) is a container format for individual images and image sequences. It was developed by the Moving Picture Experts Group. |
优点 |
小的文件大小,非常受欢迎 |
MPEG claims that a HEIF image using HEVC requires about half the storage space as the equivalent quality JPEG. |
缺点 |
质量损失 |
|
相机 |
This camera delivers very good quality RAW images and excellent videos. More information at Sony SLT-A57 official page.
Megapixels | 16.10 | Aperture | Varies with lens | Focal length (35mm equiv.) | 1.5x Multiplier | ISO | Auto, 100, 200, 400, 800, 1600, 3200, 6400, 12800, 16000 25600 | Year | 2012 |
|
元数据 |
处理XMP, EXIF 或 IPTC |
|