NEC MT830 user manual 516 578 639 701 824 1009 1194 1317 1563 1748 1932, 135 179 208 267 311 355

Standard Zoom Lens (Wide)

α	Degree	9.02	8.86	8.81	8.78	8.75	8.73	8.70	8.67	8.65	8.64	8.63	8.62	8.61
β (sin= α)		0.15671	0.15395	0.15318	0.15260	0.15216	0.15181	0.15128	0.15076	0.15041	0.15024	0.14998	0.14984	0.14972
γ (cos= α)		0.98764	0.98808	0.98820	0.98829	0.98836	0.98841	0.98849	0.98857	0.98862	0.98865	0.98869	0.98871	0.98873
Screen Size	inch	32	48	56	64	72	80	96	120	144	160	192	216	240
H–Width
4 : 3 Diagonal	inch	40	60	70	80	90	100	120	150	180	200	240	270	300
A	mm	1572	2400	2814	3228	3642	4056	4884	6127	7369	8197	9853	11096	12338
	inch	61.9	94.5	110.8	127.1	143.4	159.7	192.3	241.2	290.1	322.7	387.9	436.8	485.7
B	mm	332	455	516	578	639	701	824	1009	1194	1317	1563	1748	1932
	inch	13.1	17.9	20.3	22.7	25.2	27.6	32.4	39.7	47.0	51.8	61.5	68.8	76.1
C	mm	1552	2371	2781	3190	3600	4009	4828	6057	7285	8104	9742	10970	12199
	inch	61.11	93.36	109.48	125.60	141.72	157.84	190.08	238.45	286.81	319.05	383.54	431.90	480.27
F	mm	-27	3	17	32	47	62	91	135	179	208	267	311	355
	inch	-1.0	0.1	0.7	1.3	1.8	2.4	3.6	5.3	7.0	8.2	10.5	12.2	14.0
C/H-Width		1.91	1.94	1.95	1.96	1.97	1.97	1.98	1.99	1.99	1.99	2.00	2.00	2.00
magnification		30.79	46.18	53.88	61.58	69.27	76.97	92.36	115.45	138.55	153.94	184.73	207.82	230.91

Standard Zoom Lens (Tele)

α	Degree	6.93	6.81	6.77	6.75	6.73	6.71	6.69	6.66	6.65	6.64	6.63	6.62	6.62
β (sin= α)		0.12065	0.11850	0.11790	0.11746	0.11711	0.11684	0.11643	0.11603	0.11576	0.11562	0.11542	0.11531	0.11522
γ (cos= α)		0.99269	0.99295	0.99302	0.99308	0.99312	0.99315	0.99320	0.99325	0.99328	0.99329	0.99332	0.99333	0.99334
Screen Size	inch	32	48	56	64	72	80	96	120	144	160	192	216	240
H–Width
4 : 3 Diagonal	inch	40	60	70	80	90	100	120	150	180	200	240	270	300
A	mm	2041	3118	3656	4194	4732	5270	6346	7961	9575	10651	12804	14418	16032
	inch	80.4	122.7	143.9	165.1	186.3	207.5	249.9	313.4	377.0	419.3	504.1	567.6	631.2
B	mm	332	455	516	578	639	701	824	1009	1194	1317	1563	1748	1932
	inch	13.1	17.9	20.3	22.7	25.2	27.6	32.4	39.7	47.0	51.8	61.5	68.8	76.1
C	mm	2027	3096	3630	4165	4699	5234	6303	7907	9511	10580	12718	14322	15925
	inch	79.78	121.88	142.92	163.97	185.02	206.06	248.15	311.29	374.43	416.52	500.71	563.85	626.99
F	mm	-27	3	17	32	47	62	91	135	179	208	267	311	355
	inch	-1.0	0.1	0.7	1.3	1.8	2.4	3.6	5.3	7.0	8.2	10.5	12.2	14.0
C/H-Width		2.49	2.54	2.55	2.56	2.57	2.58	2.58	2.59	2.60	2.60	2.61	2.61	2.61
magnification		30.79	46.18	53.88	61.58	69.27	76.97	92.36	115.45	138.55	153.94	184.73	207.82	230.91

E-19