Copyright (c) 1997 Ken Hancock <kenh@vgi.com>
This document resides at http://members.aol.com/khancock/nbuddy/

This document is coprighted.  The document and information contained
herein may be used freely, however do not distribute modified copies of
this document.  If you intend on mirroring this document on another web
site, please mail me so I can advise you of updates.

If you have updates to this documentation, please mail them to
kenh@vgi.com so that the master document can be updated and distributed
to any mirror sites.

-----

.NKN format

File Header
0x03 0x4E 0x39 0x30		(Pascal string "N90")
0x01 0x01					(Format Version)
4 bytes time/date stamp - byte reversed/Windows date format
Roll Name - Pascal string
Camera Name - Pascal String
1 byte - ISO
1 byte - Storage Level
	0x00 - Minimum
	0x01 - Medium
	0x02 - Maximum
3 bytes:
	0x00 0x01 0x00
1 byte - frame count
0x00

Data
Frame Name - Pascal String
8 bytes date:
	byte 0: Shutter Speed
	byte 1: Aperture
	byte 2: Exposure Mode
	byte 3: Metering System
	byte 4: Flash-Sync Mode
	byte 5: Focal Length
	byte 6: Exposure Compensation
	byte 7: Flash Compensation
	
ISO Table
$00	6
$01	8
$02	10
$03	12
$04	16
$05	20
$06	25
$07	32
$08	40
$09	50
$0A	64
$0B	80
$0C	100
$0D	125
$0E	160
$0F	200
$10	250
$11	320
$12	400
$13	500
$14	640
$15	800
$16	1000
$17	1250
$18	1600
$19	2000
$1A	2500
$1B	3200
$1C	4000
$1D	5000
$1E	6400
$1F	

Shutter Speed Table
$00	Invalid
$01	?? Bulb
$02	??
$03	??
$04	30
$05	25
$06	20
$07	20
$08	15
$09	13
$0A	10
$0B	10
$0C	8
$0D	6
$0E	6
$0F	5
$10	4
$11	4
$12	3
$13	2.5
$14	2
$15	1.6
$16	1.45
$17	1.3
$18	1
$19	1/1.3
$1A	1/1.5
$1B	1/1.6
$1C	1/2
$1D	1/2.5
$1E	1/3
$1F	1/3
$20	1/4
$21	1/5
$22	1/6
$23	1/6
$24	1/8
$25	1/10
$26	1/10
$27	1/13
$28	1/15
$29	1/20
$2A	1/20
$2B	1/25
$2C	1/30
$2D	1/40
$2E	1/45
$2F	1/50
$30	1/60
$31	1/80
$32	1/90
$33	1/100
$34	1/125
$35	1/160
$36	1/180
$37	1/200
$38	1/250
$39	1/320
$3A	1/350
$3B	1/400
$3C	1/500
$3D	1/640
$3E	1/750
$3F	1/800
$40	1/1000
$41	1/1250
$42	1/1500
$43	1/1600
$44	1/2000
$45	1/2500
$46	1/3000
$47	1/3200
$48	1/4000
$49	1/5000
$4A	1/6000
$4B	1/6400
$4C	1/8000

Aperture Table
$00	f/1
$01	f/1.1
$02	r/1.1
$03	f/1.2
$04	f/1.2
$05	f/1.3
$06	f/1.4
$07	f/1.5
$08	f/1.6
$09	f/1.7
$0A	f/1.8
$0B	f/1.9
$0C	f/2
$0D	f/2.1
$0E	f/2.2
$0F	f/2.4
$10	f/2.5
$11	f/2.7
$12	f/2.8
$13	f/3
$14	f/3.2
$15	f/3.3
$16	f/3.5
$17	f/3.8
$18	f/4
$19	f/4.2
$1A	f/4.5
$1B	f/4.8
$1C	f/5
$1D	f/5.3
$1E	f/5.6
$1F	f/6
$20	f/6.3
$21	f/6.7
$22	f/7.1
$23	f/7.6
$24	f/8
$25	f/8.5
$26	f/9
$27	f/9.5
$28	f/10
$29	f/11
$2A	f/11
$2B	f/12
$2C	f/13
$2D	f/13
$2E	f/14
$2F	f/15
$30	f/16
$31	f/17
$32	f/18
$33	f/19	
$34	f/20	
$35	f/21	
$36	f/22	
$37	f/24	
$38	f/25	
$39	f/27	
$3A	f/29	
$3B	f/30	
$3C	f/32	
$3D	f/34	
$3E	f/36	
$3F	f/38	
$40	f/40	
$41	f/43	
$42	f/45	
$43	f/48	
$44	f/51	
$45	f/54	
$46	f/57	
$47	f/60
$48	f/64
$49	f/68
$4A	f/72
$4B	f/76
$4C	f/81
$4D	f/85
$4E	f/90

EXPOSURE MODE TABLE
$00	M - Manual
$01	A - Aperature-Priority
$02	S - Shutter-Priority
$03	P - Multi-Program
$04	
$05	
$06	
$07	
$08	Ps/Po - Portrait
$09	Ps/Re - Red-Eye Reduction
$0A	Ps/Hf - Hyperfocal
$0B	Ps/La - Landscape
$0C	Ps/Sl - Silhouette
$0D	Ps/Sp - Sports
$0E	Ps/Cu - Close-Up
$0F	P/CP - Custom Program


METERING SYSTEM TABLE
$00	Center-Weighted
$01	Spot Metering
$02	Matrix Metering
$03	

FLASH-SYNC MODE
$00	Normal Sync
$01	Slow Sync
$02	Rear-Curtain Sync
$03	-

FOCAL LENGTH TABLE
$00	-
$01	5
$02	5.5
$03	5.5
$04	5.5
$05	5.5
$06	6
$07	6
$08	6.5
$09	6.5
$0A	6.5
$0B	7
$0C	7
$0D	7
$0E	7.5
$0F	7.5
$10	8
$11	8
$12	8.5
$13	8.5
$14	9
$15	9
$16	9.5
$17	9.5
$18	10
$19	10
$1A	10.5
$1B	11
$1C	11
$1D	11.5
$1E	12
$1F	12
$20	13
$21	13
$22	13
$23	14
$24	14
$25	14
$26	15
$27	15
$28	16
$29	16
$2A	17
$2B	17
$2C	18
$2D	18
$2E	19
$2F	19
$30	20
$31	20
$32	21
$33	22
$34	22
$35	23
$36	24
$37	24
$38	25
$39	26
$3A	26
$3B	27
$3C	28
$3D	28
$3E	30
$3F	31
$40	32
$41	32
$42	34
$43	34
$44	35
$45	36
$46	38
$47	38
$48	40
$49	40
$4A	42
$4B	44
$4C	45
$4D	46
$4E	48
$4F	48
$50	50
$51	52
$52	52
$53	55
$54	56
$55	58
$56	60
$57	62
$58	62
$59	65
$5A	66
$5B	68
$5C	70
$5D	72
$5E	75
$5F	78
$60	80
$61	82
$62	85
$63	86
$64	90
$65	92
$66	95
$67	98
$68	100
$69	102
$6A	105
$6B	110
$6C	112
$6D	116
$6E	120
$6F	122
$70	125
$71	130
$72	135
$73	135
$74	140
$75	145
$76	150
$77	155
$78	160
$79	165
$7A	171
$7B	175
$7C	180
$7D	185
$7E	190
$7F	195
$80	200
$81	210
$82	210
$83	220
$84	220
$85	230
$86	240
$87	240
$88	250
$89	260
$8A	270
$8B	270
$8C	280
$8D	290
$8E	300
$8F	310
$90	320
$91	330
$92	340
$93	350
$94	360
$95	370
$96	380
$97	390
$98	400
$99	410
$9A	420
$9B	440
$9C	450
$9D	460
$9E	480
$9F	490
$A0	500
$A1	500
$A2	550
$A3	550
$A4	550
$A5	600
$A6	600
$A7	600
$A8	650
$A9	650
$AA	650
$AB	700
$AC	700
$AD	750
$AE	750
$AF	800
$B0	800
$B1	800
$B2	850
$B3	850
$B4	900
$B5	900
$B6	950
$B7	1000
$B8	1000
$B9	1050
$BA	1050
$BB	1100
$BC	1150
$BD	1150
$BE	1200
$BF	1250
$C0	1300
$C1	1300
$C2	1300
$C3	1400
$C4	1400
$C5	1500
$C6	1500
$C7	1600
$C8	1600
$C9	1600
$CA	1700
$CB	1700
$CC	1800
$CD	1800
$CE	1900
$CF	2000
$D0	2000
$D1	2100
$D2	2100
$D3	2200
$D4	2300
$D5	2300
$D6	2400
$D7	2500
$D8	2500
$D9	2600
$DA	2700
$DB	2800
$DC	2900
$DD	2900
$DE	3000
$DF	3100
$E0	3200
$E1	3300
$E2	3400
$E3	3500
$E4	3600
$E5	3700
$E6	3800
$E7	3900
$E8	4000
$E9	4100
$EA	4300
$EB	4400
$EC	4500
$ED	4700
$EE	4800
$EF	4900
$F0	5100	
$F1	5200
$F2	5400
$F3	5500
$F4	5700
$F5	5900
$F6	6000
$F7	6200	
$F8	6400
$F9	6600
$FA	6800
$FB	7000
$FC	7200
$FD	7400
$FE	7600
$FF	-

EXPOSURE COMPENSATION TABLE
$00	 0.0
$01	-0.2
$02	-0.3
$03	-0.5	
$04	-0.7
$05	-0.8
$06	-1.0
$07	-1.2
$08	-1.3
$09	-1.5
$0A	-1.7
$0B	-1.8
$0C	-2.0
$0D	-2.2
$0E	-2.3
$0F	-2.5
$10	-2.7
$11	-2.8
$12	-3.0	
$13	-3.2	
$14	-3.3	
$15	-3.5	
$16	-3.7	
$17	-3.8	
$18	-4.0	
$19	-4.2	
$1A	-4.3	
$1B	-4.5	
$1C	-4.7	
$1D	-4.8	
$1E	-5.0	
$1F	-5.2	
$20	-5.3	
$21	-5.5	
$22	-5.7	
$23	-5.8	
$24	-6.0	
$25	-6.2	
$26	-6.3	
$27	-6.5	
$28	-6.7	
$29	-6.8	
$2A	-7.0	
$2B	-7.2	
$2C	-7.3	
$2D	-7.5	
$2E	-7.7	
$2F	-7.8	
$30	-8.0	
$31	-8.2	
$32	-8.3	
$33	-8.5	
$34	-8.7	
$35	-8.8	
$36	-9.0	
$37	-9.2	
$38	-9.3	
$39	-9.5	
$3A	-9.7	
$3B	-9.8	
$3C	-10.0	
$3D	-10.2	
$3E	-10.3	
$3F	-10.5	
$40	-10.7	
$41	-10.8	
$42	-11.0	
$43	-11.2	
$44	-11.3	
$45	-11.5	
$46	-11.7	
$47	-11.8	
$48	-12.0	
$49	-12.2	
$4A	-12.3	
$4B	-12.5	
$4C	-12.7	
$4D	-12.8	
$4E	-13.0	
$4F	-13.2	
$50	-13.3	
$51	-13.5	
$52	-13.7	
$53	-13.8	
$54	-14.0	
$55	-14.2	
$56	-14.3	
$57	-14.5	
$58	-14.7	
$59	-14.8	
$5A	-15.0	
$5B	-15.2	
$5C	-15.3	
$5D	-15.5	
$5E	-15.7	
$5F	-15.8	
$60	-16.0	
$61	-16.2	
$62	-16.3	
$63	-16.5	
$64	-16.7	
$65	-16.8	
$66	-17.0	
$67	-17.2	
$68	-17.3	
$69	-17.5	
$6A	-17.7	
$6B	-17.8	
$6C	-18.0	
$6D	-18.2	
$6E	-18.3	
$6F	-18.5	
$70	-18.7	
$71	-18.8	
$72	-19.0	
$73	-19.2	
$74	-19.3	
$75	-19.5	
$76	-19.7	
$77	-19.8	
$78	-20.0	
$79	-20.0	
$7A	-20.0	
$7B	-20.0	
$7C	-20.0	
$7D	-20.0	
$7E	-20.0
$7F	-20.0
$80	+20.0
$81	+20.0	
$82	+20.0	
$83	+20.0	
$84	+20.0	
$85	+20.0	
$86	+20.0	
$87	+20.0	
$88	+20.0	
$89	+19.8	
$8A	+19.7	
$8B	+19.5	
$8C	+19.3	
$8D	+19.2	
$8E	+19.0	
$8F	+18.8	
$90	+18.7	
$91	+18.5	
$92	+18.3	
$93	+18.2	
$94	+18.0	
$95	+17.8	
$96	+17.7	
$97	+17.5	
$98	+17.3	
$99	+17.2	
$9A	+17.0	
$9B	+16.8	
$9C	+16.7	
$9D	+16.5	
$9E	+16.3	
$9F	+16.2	
$A0	+16.0	
$A1	+15.8	
$A2	+15.7	
$A3	+15.5	
$A4	+15.3	
$A5	+15.2	
$A6	+15.0	
$A7	+14.8	
$A8	+14.7	
$A9	+14.5	
$AA	+14.3	
$AB	+14.2	
$AC	+14.0	
$AD	+13.8	
$AE	+13.7	
$AF	+13.5	
$B0	+13.3	
$B1	+13.2	
$B2	+13.0	
$B3	+12.8	
$B4	+12.7	
$B5	+12.5	
$B6	+12.3	
$B7	+12.2	
$B8	+12.0	
$B9	+11.8	
$BA	+11.7	
$BB	+11.5	
$BC	+11.3	
$BD	+11.2	
$BE	+11.0	
$BF	+10.8	
$C0	+10.7	
$C1	+10.5	
$C2	+10.3	
$C3	+10.2	
$C4	+10.0	
$C5	+9.8	
$C6	+9.7	
$C7	+9.5	
$C8	+9.3	
$C9	+9.2	
$CA	+9.0	
$CB	+8.8	
$CC	+8.7	
$CD	+8.5	
$CE	+8.3	
$CF	+8.2	
$D0	+8.0	
$D1	+7.8	
$D2	+7.7	
$D3	+7.5	
$D4	+7.3	
$D5	+7.2	
$D6	+7.0	
$D7	+6.8	
$D8	+6.7	
$D9	+6.5	
$DA	+6.3	
$DB	+6.2	
$DC	+6.0	
$DD	+5.8	
$DE	+5.7	
$DF	+5.5	
$E0	+5.3	
$E1	+5.2	
$E2	+5.0	
$E3	+4.8	
$E4	+4.7	
$E5	+4.5	
$E6	+4.3	
$E7	+4.2	
$E8	+4.0	
$E9	+3.8	
$EA	+3.7	
$EB	+3.5	
$EC	+3.3	
$ED	+3.2	
$EE	+3.0	
$EF	+2.8	
$F0	+2.7	
$F1	+2.5	
$F2	+2.3	
$F3	+2.2	
$F4	+2.0	
$F5	+1.8	
$F6	+1.7	
$F7	+1.5	
$F8	+1.3	
$F9	+1.2	
$FA	+1.0	
$FB	+0.8	
$FC	+0.7	
$FD	+0.5	
$FE	+0.3	
$FF	+0.2