My Lens Resolution Test Results
 Pentax wide-angle (-25 mm) Lenses

SMC PENTAX 18mm f/3.5 (K18/3.5, #5287***)
f/3.5
55
49/49
49/49
49/49
49/44
 		f/5.6
62
62/62
55/55
49/49
49/49
 		f/8
78
69/69
62/69
62/62
55/55
 		f/11
87
87/87
78/78
69/69
69/69
 		f/16
87
78/78
69/69
62/62
62/62
 		f/22
69
62/62
62/55
55/55
55/55

smc PENTAX-A 20mm f/2.8 (A20/2.8, #5863***)
f/2.8
55
55/55
49/49
49/44
44/39
 		f/4
78
78/69
69/55
49/49
49/39
 		f/5.6
78
78/78
78/69
69/62
62/55
 		f/8
78
78/78
78/78
69/69
69/55
 		f/11
78
78/78
69/62
69/62
55/49
 		f/16
69
62/62
62/62
55/49
49/44
 		f/22
55
49/49
49/44
44/39
39/35

smc PENTAX-FA* 24mm f/2 AL[IF] (FA*24/2AL[IF], #3813***)
f/2
55
55/55
55/49
49/44
44/39
 		f/2.8
62
55/62
55/55
49/49
49/44
 		f/4
78
78/78
69/69
62/62
49/49
 		f/5.6
98
98/98
87/78
78/69
69/62
 		f/8
98
98/98
87/87
78/78
78/69
 		f/11
98
98/98
87/87
87/87
78/78
 		f/16
87
87/87
78/78
78/78
78/69
 		f/22
62
62/62
55/55
55/55
49/49

smc PENTAX 24mm f/2.8 (K24/2.8, #8002***)
f/2.8
62
62/62
49/44
49/44
39/35
 		f/4
69
62/62
55/44
49/44
49/44
 		f/5.6
87
87/78
78/69
55/55
55/49
 		f/8
98
87/78
78/69
69/62
62/55
 		f/11
98
87/78
78/69
69/62
62/62
 		f/16
98
87/78
78/69
69/62
62/62
 		f/22
62
55/55
55/49
49/49
49/49

Super-Multi-Coated TAKUMAR 24mm f/3.5 (SMCT24/3.5, #8172***)
f/3.5
62
62/55
55/49
55/49
44/44
 		f/5.6
78
78/69
66/62
69/62
55/55
 		f/8
87
78/78
69/62
69/62
69/62
 		f/11
87
78/69
69/62
69/62
69/62
 		f/16
78
69/69
62/55
62/55
62/55