Originally posted by Simon K I'd have to look for it myself, I don't have it memorized.
In case of my DS it was tagged "frame count" literally, with other cameras it may be called picture count or similar.
=====================================================
ExifToolExifTool Version Number11.11SystemFile Name1040788426.exifDirectory/home/exiftool/public_html/uploadsFile Size2.6 MBFile Modification Date/Time2021:06:27 04:23:12+07:00File Access Date/Time2021:06:27 04:23:12+07:00File Inode Change Date/Time2021:06:27 04:23:12+07:00File Permissionsrw-r--r--FileFile TypeJPEGFile Type ExtensionjpgMIME Typeimage/jpegExif Byte OrderLittle-endian (Intel, II)Image Width4608Image Height3456Encoding ProcessBaseline DCT, Huffman codingBits Per Sample8Color Components3Y Cb Cr Sub SamplingYCbCr4:2:2 (2 1)IFD0MakePENTAXCamera Model NamePENTAX Optio RZ18OrientationHorizontal (normal)X Resolution72Y Resolution72Resolution UnitinchesSoftwareOptio RZ18 Ver 1.00Modify Date2011:01:01 00:01:09Y Cb Cr PositioningCo-sitedExifIFDExposure Time1/50F Number7.1Exif Version0230Date/Time Original2011:01:01 00:01:09Create Date2011:01:01 00:01:09Components ConfigurationY, Cb, Cr, -FlashAuto, FiredFocal Length4.5 mmFlashpix Version0100Color SpacesRGBExif Image Width4608Exif Image Height3456Custom RenderedNormalExposure ModeAutoDigital Zoom Ratio1Focal Length In 35mm Format25 mmScene Capture TypeStandardContrastNormalSaturationNormalSharpnessNormalSubject Distance RangeClosePentaxPentax Version8.0.1.0Pentax Model Type2Preview Image Size640x480Preview Image Length36804Preview Image Start10796Pentax Model IDOptio RZ18Date2011:01:01Time00:01:09QualityBetterPentax Image Size4608x3456Picture ModeProgram; 2Flash ModeAuto, FiredFocus ModeNormalAF Point SelectedAutoAF Points In FocusCenterFocus Position58ISO400Light Reading20Exposure Compensation0Metering ModeMulti-segmentWhite BalanceAutoWhite Balance ModeAuto (Daylight)Blue Balance1.765625Red Balance1.93359375Digital Zoom1World Time LocationHometownHometown CityHonoluluDestination CityHonoluluHometown DSTNoDestination DSTNoDSP Firmware Version1.00.00.00Image EditingNoneImage Edit Count0Pentax 0x005e̞.Pentax 0x005f(Faces Detected0Face Position0 0Pentax 0x0061
Pentax 0x00660Dynamic Range ExpansionOffPentax 0x006a
Pentax 0x00750 0 0 0Face DetectOn (32 faces max); 0 faces detectedFace Detect Frame Size4608 3456Shadow CorrectionOffPentax 0x007c0 0 0 0Pentax 0x01f91 2Pentax 0x01fa0Pentax 0x01fb0Pentax 0x01fc0 0Pentax 0x01fd0 0Pentax 0x01fe0Pentax 0x0227�������������������������������������������������������[...]Pentax 0x0228�������������������������������������������������������[...]Pentax 0x0232�������������������������������������������������������[...]Pentax 0x0233�������������������������������������������������������[...]Data Dump(Binary data 4316 bytes)Pentax 0x05fe0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0[...]Pentax 0xfffe0Preview Image(Binary data 36804 bytes)InteropIFDInteroperability IndexR98 - DCF basic file (sRGB)Interoperability Version0100PrintIMPrintIM Version0300Print IM 0x00010x00160016Print IM 0x00020x00000001Print IM 0x00030x000000d6Print IM 0x00070x00000000Print IM 0x00080x00000000Print IM 0x00090x00000000Print IM 0x000a0x00000000Print IM 0x000b0x0000011ePrint IM 0x000c0x00000000Print IM 0x000d0x00000000Print IM 0x000e0x00000136Print IM 0x01000x00000005Print IM 0x01010x000000ffPrint IM 0x01020x00000083Print IM 0x01030x00000083Print IM 0x01040x00000083Print IM 0x01050x00000083Print IM 0x01060x00000083Print IM 0x01070x00838383Print IM 0x01100x00000080Print IM 0x02000x00000000Print IM 0x02070x00000000Print IM 0x02080x00000000Print IM 0x02090x00000000Print IM 0x020a0x00000000Print IM 0x020b0x00000146Print IM 0x020d0x00000000Print IM 0x03000x00000005Print IM 0x03010x000000ffPrint IM 0x03020x00000083Print IM 0x03030x00000083Print IM 0x03060x00000083Print IM 0x03100x00000080IFD1CompressionJPEG (old-style)Thumbnail Offset52464Thumbnail Length5724Thumbnail Image(Binary data 5724 bytes)CompositeAperture7.1Scale Factor To 35 mm Equivalent5.6Shutter Speed1/50Circle Of Confusion0.005 mmField Of View71.5 degFocal Length4.5 mm (35 mm equivalent: 25.0 mm)Hyperfocal Distance0.53 mImage Size4608x3456Light Value9.3Megapixels15.9