Which lens alternatives can I get with A310, A320, A315 and A325 (A320G)?

The following lenses are available for A310/A320 and A315/A325 (A320G). Lenses without mechanical support are also used with T/B 3xx and 4xx

Lens	Focal length	Near focus
25° x 19° built in	18 mm	400 mm
6° x 4.5° add on	76 mm	4 m
15° x 11° add on	30 mm	1200 mm
45° x 34° add on	10 mm	200 mm
90° x 60° add on	4 mm	10 mm
8 x 6 mm	1x	21 mm fixed
16 x 12 mm	2x	33 mm fixed
32 x 24 mm	4x	79 mm fixed

Focal length = 160*pitch/tan(FOV/2), where pitch is 25 μm