Ask Proxima C440/C450 manual Appendix, Projected image size

Appendix

Projected image size

NOTE: Visit our website for an interactive image size calculator.

Table 1: Projection sizes: Standard lens (1.5 - 2.2:1 throw ratio)

	Minimum Image		Maximum Image
	Diagonal	Image	Diagonal	Image
Distance	Image	Width	Image	Width
(feet/m)	(feet/m)	(feet/m)	(feet/m)	(feet/m)
Min Distance	1.7/0.52	1.46/.42	2.5/0.76	1.82/0.55
3/0.9
5/1.5	2.84/0.87	2.27/.69	4.17/1.27	4.55/1.39
10/3.0	5.68/1.73	4,55/1.39	8.33/2.54	9.09/2.77
20/6.1	11.36/3.46	9.09/2.77	16.67/5.08	13.33/4.06
30/9.1	17.05/5.2	13.64/4.16	25.0/7.62	20.0/6.10
40/12.2	22.73/6.93	18.18/5.54	33.33/10.16	26.67/8.13
Max Distance	25.85/7.88	20.68/6.20	37.92/11.56	30.33/9.25
45.5/13.9

The image offset range for the standard lens is 10:1 (100%) to 1:1 (50%).

Table 2: Projection sizes: Short Fixed lens (0.8:1 throw ratio)

	Image Size
	Diagonal Image	Image Width
Distance (feet/m)	(feet/m)	(feet/m)
Min Distance	4.69/1.43	3.75/1.14
3/0.9
5/1.5	7.81/2.38	6.25/1.91
10/3.0	15.63/4.76	12.5/3.81
Max Distance 12/3.7	18.75/5.72	15.0/4.57

The optimal offset setting for the fixed focus short throw lens is 50% (on axis).

43