Sony ILCE-1 Help Manual page 235

Help Guide
Interchangeable Lens Digital Camera
ILCE-1
α1
Image Quality Settings: RAW File Type
Selects the file type for RAW images.
MENU → (Shooting) → [Image Quality] → [Image Quality Settings] → [RAW File Type] → desired
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setting.
Menu item details
Uncompressed:
Records images in uncompressed RAW format. When [Uncompressed] is selected for [RAW File Type], the file size of
the image will be larger than if it were recorded in lossless compressed RAW format or compressed RAW format.
Lossless Comp (L)/Lossless Comp (M)/Lossless Comp (S)
Records images with a lossless compression method that causes no deterioration
compression rate. The file size is smaller than when [Uncompressed] is selected.
You can select L/M/S as the image size. The number of pixels after development using a Sony application is the
same as the L/M/S size for JPEG/HEIF images.
The L size can be selected only when shooting in full frame. When shooting in the M or S size, the pixel number does
not change for full-frame shooting or APS-C-size shooting.
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When the camera's system software (firmware) version is Ver.1.30 or later
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The M size and S size reduce the image size, so the image resolution will be lower than that of the L size.
Compressed:
Records images in compressed RAW format. The file size of the image will be approximately half of that with
[Uncompressed].
Hint
The [RAW File Type] icons are displayed as shown below.
Uncompressed:
Lossless compression (L/M/S):
Compressed:
The aspect ratio for RAW images is always 3:2. JPEG/HEIF images are recorded with the aspect ratio set in [Aspect Ratio] when
RAW images and JPEG/HEIF images are recorded at the same time.
Note
You cannot record RAW images with different formats to Slot 1 and Slot 2. Even when [
Recording], each slot has the same setting for [RAW File Type].
Related Topic
Image Quality Settings: File Format (still image)
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:
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in image quality and has a high
Recording Media] is set to [Sort