JEITA CP-3451 - 112 - A.4 JPEG Compressed (4:2:0) File Table 39 JPEG Compressed (4:2:0) File Description Sample Contents   Primary Image Recording Format JPEG Subsampling YCC 4:2:0 Restart Markers Inserted Quantization Tables 2 Pixels 620 (W) x 475 (H) Image Title 620x475 SOF Recorded Pixels 640x475 DCT Data 640x480 Image Title Exif_JPEG_420 Image Input Equipment Manufacturer DSCompany Image Input Equipment Model Name Example Orientation Normal Image Resolution 72 dpi (Width), 72 dpi (Length) File Change Date and Time 1997:09:01 12:00:00 Copyright Copyright, ABCDE,1997 Exif-specific Information   Version Ver. 2.0 Date and Time of Original Image Creation 1997:09:01 12:00:00 Date and Time of File Creation 1997:09:01 12:00:00 Components Y,Cb,Cr Image Compression Mode 2bit/pel Shutter Speed 59/10 (equivalent to 1/60 sec.) Aperture 50/10 (equivalent to F:5.6) Brightness 80/10 Exposure Bias 0/0 Maximum Lens Aperture 200/10 Subject Distance 20/10 Metering Mode MultiSpot Light Source Daylight Flash ON/OFF ON Thumbnails Recording Format   TIFF Subsampling YCC 4:2:0 Pixels 80x60 Image Resolution 72 dpi (Width), 72 dpi (Length) Table 40 JPEG Compressed (4:2:0) File JPEG Stream Description Sample Offset _(Hex) Maker Segment Name Code (Hex) Comment 0000 SOI SOI Marker FFD8 Start of Image 0002 APP1 Marker FFE1 0004 APP1 Length 1FBC 0006 Identifier "Exif"00 000B Pad 00 000C APP1 APP1 Body See Next Table 1FC0 DQT Marker FFDB Define Quantization Table 1FC2 DQT Length 0084 1FC4 Pq, Tq 00 1FC5 table elements 08060607.... 64 Bytes of Data 2005 DQT Pq,Tq 01