In short, below are reasons why the 5mp-60 may not work well for you (your machine is big enough and you’re going to mount it pretty high up), so you should upgrade to 8mp. 8mp N - 75 has the least wasted space, but the N (narrow) models do not work on Mac. If you’re running Windows you’re fine.
More cameras are in transit to us and should be restocked within a week.
This info from what I’ve been working on writing may help explain the reasoning why:
We’ve found that the around 700-900mm of bed size (the larger of the 2 dimensions) is typically where the 8mp’s increased resolution becomes noticeable. In our camera intro video you can see that the 5mp, 140 degree works well on a common generic 700x500 red and black laser, but it depends on how much alignment accuracy you are looking for and whether you want to spend the little bit extra to get the 8mp. Above this size, we recommend the 8mp.
Lens angle sizes
The 60 and 90 degree lenses on the 5mp camera do not let a lot of light in. If you have a larger machine and the calculator is showing that the 60 or 90 can see your bed, but you would have to mount it pretty high, that can have a negative impact on resolution and the camera would not clearly see your bed. In this case, you might want to consider using a larger lens angle like a 120 or 140 degree, and mounting it lower so that it still sees your bed without too much wasted space around the edges.
Alternatively, you can get an 8mp camera - since it has a larger sensor, more light gets in, and there is no problem
8mp Wide vs Narrow.
Find the one with the least dead space. Narrow doesn’t work on Mac, etc.