Pentax Extreme Telephoto Prime Lenses

Table 1. Pentax Extreme Telephoto Prime Lenses.
Lens	Elements- Groups	Min. Focus Distance (m)	Filter Dia- meter (mm)	Lens Diameter x Length (mm)	Weight (g)	In Production
A* 300/2.8 ED [IF]	8-8	3.0	112	133 x 236	2970	no
FA* 300/2.8 ED [IF]	10-7	2.0	112	123 x 247	2495	no
K 300/4	7-5	4.0	77	85 x 188	1020	no
M* 300/4	8-7	4.0	77	84 x 132	825	no
A* 300/4	8-7	4.0	77	84 x 132	850	no
DA* 300/4 ED [IF] SDM	8-6	1.4	77	83 x 184	1070	yes
F* 300/4.5 ED [IF]	9-7	2.0	67	84 x 160	880	no
FA* 300/4.5 ED [IF]	9-7	2.0	67	73 x 160	935	no
A* 400/2.8 ED [IF]	8-8	4.5	145	165 x 325	6000	no
K 400/5.6	5-5	8.0	77	85 x 277	1285	no
M 400/5.6	5-5	5.0	77	85 x 277	1220	no
A 400/5.6	7-6	2.8	77	85 x 277	1240	no
FA* 400/5.6 ED [IF]	9-8	2.0	77	83 x 199	1140	no
K 500/4.5	4-4	10.0	—	127 x 440	3370	no
F* 600/4 ED [IF]	9-7	5.0	—	181 x 457	6830	no
FA* 600/4 ED [IF]	9-7	5.0	150	176 x 457	6800	no
A* 600/5.6 ED [IF]	8-6	5.5	112	133 x 386	3280	no
K 1000/8	5-5	30.0	—	143 x 738	5290	no
K 1000/11 Reflex	6-4	8.0	—	119 x 248	2300	no
A* 1200/8 ED [IF]	9-8	8.0	150	170 x 684	8580	no
K 2000/13.5 Reflex	6-4	20.0	—	180 x 530	8000	no
M 2000/13.5 Reflex	6-4	20.0	—	180 x 530	8000	no