12mm lenses

Lenses

Mxx series cameras (M40, M50...) and VCSBC50 use 12mm diameter lenses with fixed focus and iris, availabe witn several focal lengths.

Mxx cameras are normally supplied with a 12mm lens: should you wish to use a different focal length, two alternatives are available (at the same cost):

ordering a different lens to be preinstalled (among available lenses below).

ordering the removable cover version and purchasing the required lenses separately.

Nominal working distance and field of view as delivered are according to following table:

		M40	M40	M50	M50
Focal Length (mm)	Working distance (mm)	X dim. of field (mm)	Y dim. of field (mm)	X dim. of field (mm)	Y dim. of field (mm)
2.5	85	175	131	133	99
3.6	85	117	88	88	66
4.3	85	100	75	76	57
6	85	70	53	53	40
8	85	52	39	39	29
12	85	33	25	25	19

Working distance is referred to the front of the camera.

M40 uses a 1/3" sensor (4,736 x 3,552 mm).

M50 uses a 1/4" sensor (3,584 x 2,688 mm).

Prices for these lenses are >>>here<<<

Need a different working distance or field of view?

It is very easy to adjust the position of the lens (by simply turning it) so that significantly different working distance and field of view can be achieved.

Field of view Vs. Working distance is plotted here: (click to enlarge)

M40, M50	SBC50

The full lens selection and adjustment guide with all possible combinations is available from our download page.

Here's some useful data:

Minimum working distance

		M40	M40	M50	M50
Focal length	min. dist.	X field	y field	x field	y field
8	45	28	21	21	16
12	45	17	13	13	10

Maximum working distance

		M40	M40	M50	M50
Focal length	MAX. dist.	X field	y field	x field	y field

8	100	60	45	46	34
12	5000	1973	1479	1493	1120

Field of view @ several working distances (with 12mm lens)

	M40	M40	M50	M50
MAX. dist.	X field	y field	x field	y field
50	19	14	14	11
60	23	17	17	13
70	27	20	20	15
80	31	23	23	17
90	35	26	26	20
100	39	29	29	22
110	43	32	32	24
120	47	35	35	26
130	51	38	38	29
140	54	41	41	31
150	58	44	44	33
160	62	47	47	35
170	66	50	50	38
180	70	53	53	40
190	74	56	56	42
200	78	59	59	44
250	98	73	74	56
300	118	88	89	67

Or, a special version of M40 and M50 is available that has a C-Mount lens adapter: you can then use any lens for any field ov view. Pls ask...