What is the Difference between i-Series (b40, b50 & b60) Cameras?

FLIR b40	FLIR b50	FLIR b60
• 120 x 120 IR resolution • < 100 mK NETD • Visual camera 0.6 Mpixels • Fusion (Picture in picture) • Weight: 600 g • Dewpoint and insulation alarms	• 140 x 140 IR resolution • < 100 mK NETD • Visual camera 2.3 Mpixels • Fusion (Picture in Picture, in three steps) • Weight: 600 g • Laser pointer • Dewpoint and insulation alarms	• 180 x 180 IR resolution • < 80 mK NETD • Visual camera 2.3 Mpixels • Fusion (scalable Picture in Picture) • Weight: 600 g • Laser pointer with marker in IR image • Dewpoint and insulation alarms