What is the field of view (how wide is the image at a known range)
619409
The owners manual says it has a 12 degrees field of view. At 20 and 50 yards field of view seems to be about 20 feet wide. Hope this helps.
2250991
Page 2 of http://www1.viewsonic.com/assets/149/27847.pdf shows projection distances and image sizes, I am using it at a 7' 10" projection distance to get 72" W = 41" H = 83" diag
734524
The distance from the screen will determine the maximum size of the image produced. Use this calculator to determine what you need: http://www1.viewsonic.com/viewschool/distance-calculator/
1986181
Its in the 3+" range. It does give a good sight picture though, some of my older inexpensive scopes have a very narrow range where your eye can be, this seems better with the newer scopes.
1694217
It appears the focal distance is about 10-12 feet; you will be unable to see any clear image nearer than that distance.
1801797
We have the camera mounted on a garage about 60' from our cottage. I'm guessing we are getting about 100' field of view at that distance. More than adequate.
1533461
Image Brightness 3000 ANSI lumenImage Contrast Ratio 15000:1Image Aspect Ratio 16:10Max Image Size 300.00 InchMin Image Size 69.00 InchMax Resolution 1600 x 1200Max Projection Distance 32.80 InchMin Projection Distance 1.30 Inch
629122
Image clarity is good out to about 150 but 300 would be questionable. I use it for deer hunting out to about 100-120 with good success. The object would be clear at 300 but details would be minimized.
614114
Not sure of the exact number of degrees, but it is wide. The picture from the camera is also very good for this type of camera.
688532
It depends on the distance. This device is nice but will only give you clear image in the range of up to 50 yards. Beyond that things will not be clear and recognizable.
2203838
No more than 12" from the material and about the same for how far back your eyes can be. The image is somewhat blurry however.
1086597
I don't know exactly, but is not a long range one and images at 30 meters from the camera are not very clear. Only HD definition cameras can get good images. Hope this helps.
1968746
i believe that the field of view is aprox/ 60 degrees angle but it depends the area that you will cover mine are only dome.
1763910
About as far as you can still see it with the naked eye...so at least 50-100 yards.
1381021
my setup is 7' high and 10' from the screen. The lens is in maximum zoom position to attain about 120" screensize.
1879897
Not sure. it was placed on the roof eve of a 2 story apartment complex and covered the entire common area very well. I have the same ones on my house, within the house it looks to be about 60º of View. They are much better camera's than the normal ones used in most of the Q-See systems ( and all others that I have worked with ). The resolution is about 50% + better.
572073
It has a 4mm focal length, with a 54 degree viewing angle. The lens and camera were exactly what I wanted. The night vision was great. The software was a nightmare.