Nikon Z 8 Reference Manual page 104

Image area
[16:9 (36×20)]
Tip: Print Size
Print size in inches equals image size in pixels divided by printer resolution in dots per inch (dpi; 1
inch = 2.54 cm).
Enable DX Image Sizes
Selecting [ON] allows the size for photos taken using the [DX
(24×16)] image area to be chosen separately from that for pictures
taken using other image areas.
Image Size (DX)
Choose the size of photographs taken using the [DX (24×16)]
image area when [ON] is selected for [Enable DX image sizes].
Regardless of the option selected, NEF (RAW) pictures will be
recorded at a size of [Large].
Image size
Large (8256 × 4640 pixels)
Medium (6192 × 3480 pixels)
Small (4128 × 2320 pixels)
Size when printed at 300 dpi
Approx. 69.9 × 39.3cm/27.5 × 15.5 in.
Approx. 52.4 × 29.5 cm/20.6 × 11.6 in.
Approx. 35.0 × 19.6 cm/13.8 × 7.7 in.
Image Recording Options (Image Area, Quality,
104
and Size)