Quantaray 500mm f8 Mirror
Most Quantaray lenses were made by Sigma and some were made by Tamron and Tokina. This lens performs like a Sigma Mirror lens. It is reasonably sharp if you can hold it steady. It has the typical ringed bokeh we see from mirror lenses. Contrast is surprisingly high. While it is not a Zeiss or even a Tamron in quality, it is still far better than any of the off-brands flooding the market.
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Pentax Filter Size Chart
Pentax m42 TAKUMAR
20mm f4.5 SMC Takumar
24mm f3.5 SMC Takumar
28mm f3.5 SMC Takumar
35mm f3.5 SMC Takumar
35mm f2 SMC Takumar
50mm f1.4 SMC Takumar
55mm f2 SMC Takumar
55mm f1.8 SMC Takumar
50mm f4 Macro SMC Takumar
85mm f3.5 Quartz
85mm f1.8 SMC Takumar
85mm f1.9 SMC Takumar
85mm f4.5 Ultra Achromatic
100mm f4 Macro
100mm f4 Macro Bellows
105mm f2.8 SMC Takumar
120mm f2.8 SMC Takumar
135mm f3.5 SMC Takumar
135mm f2.5 SMC Takumar
150mm f4 SMC Takumar
200mm f4 SMC Takumar
300mm f6.3 Tele Takumar
300mm f4 Tele Takumar
300mm f4 SMC Takumar
300mm f5.6 Ultra Achromatic
400mm f5.6 SMC Takumar
500mm f4.5 SMC Takumar (rear)
45-125mm f4 SMC Takumar
85-210mm f4.5 SMC Takumar
135-600mm F6.7 (rear 49mm)
77mm
58mm
49mm
49mm
49mm
49mm
49mm
49mm
49mm
49mm
58mm
58mm
49mm
49mm
49mm
49mm
49mm
49mm
58mm
49mm
58mm
58mm
82mm
77mm
58mm
77mm
49mm
58mm
58mm
95mm
Pentax K (1st Series)
18mm f3.5
20mm f4
24mm f2.8
24mm f3.5
28mm f2
28mm f3.5
30mm f2.8
35mm f2
35mm f3.5
50mm f4 Macro
50mm f1.2
50mm f1.4
55mm f1.8
55mm f2
85mm f1.8
85mm f2.2 Soft
100mm f4 Bellows
100mm f4 Macro
105mm f2.8
120mm f2.8
135mm f2.5
135mm f3.5
50mm f4
200mm f2.5
200mm f4
300mm f4
400mm f5.6
500mm f4.5
1000mm f8
1000mm f11 Reflex
2000mm f3.5 Reflex
28-50mm f3.5-4.5
45-125mm f4
80-200mm f4.5
85-210mm f3.5
85-210mm f4.5
135-600mm f6.7
400-600mm f8-12 Reflex
58mm
58mm
52mm
58mm
52mm
52mm
52mm
52mm
52mm
52mm
52mm
52mm
52mm
52mm
52mm
49mm
52mm
52mm
52mm
52mm
58mm
52mm
52mm
77mm
52mm
77mm
77mm
52mm
52mm
52mm
52mm
52mm
58mm
52mm
67mm
58mm
52mm
67mm
Pentax 6x7
SMC 6x7 135mm f4 Macro
SMC 6x7 100mm f4 Macro
SMC 6x7 120mm f3.5 Soft
SMC 6x7 165mm f2.8
SMC 6x7 165mm f4 Leaf Shutter
SMC 6x7 45mm f4
SMC 6x7 75mm f/4.5 Shift
SMC 6x7 800mm f/ 6.7 ED
SMC 6x7 90mm f/2.8
SMC Takumar 6x7 90mm f/2.8 Leaf Shutter
SMC-M* 67 300mm f/ 4 (ED) IF
SMC-M* 67 400mm f/ 4 ED (IF)
Takumar 6x7 400mm f/ 4
Pentax 67 200mm f/4
Takumar 6x7 200mm f/ 4
SMC 6x7 105mm f/ 2.4
Super-Takumar 200mm f/ 4 (6x7)
67mm
77mm
77mm
67mm
77mm
82mm
82mm
67mm
67mm
67mm
82mm
67mm
77mm
77mm
67mm
67mm
67mm
67mm
67mm
49mm
49mm
58mm
49mm
49mm
49mm
49mm
52mm
49mm
67mm
52mm
58mm
49mm
52mm
77mm
67mm
--
67mm
77mm
--
58mm
67mm
52mm
67mm
58mm
58mm
58mm
58mm
62mm
58mm
58mm
72mm
49mm
49mm
77mm
49mm
58mm
58mm
58mm
--
Pentax AF (FA) (early 90's)
20mm f2.8
24mm f2 AL [IF]
28mm f2.8 AL
28mm f2.8 Soft
31mm f1.8 AL ED Limited
35mm f2 AL
43mm f1.9 Limited
50mm f1.4
50mm f1.7
50mm f2.8 Macro
77mm f1.8 Limited
85mm f1.4 [IF]
85mm f2.8 Soft
100mm f2.8 Macro
100mm f3.5 Macro
135mm f2.8 [IF]
200mm f2.8 ED [IF]
200mm f4 Macro ED [IF]
300mm f2.8 ED [IF] (112 front / 43 rear)
300mm f4.5 ED [IF]
400mm f5.6 ED [IF]
600mm f4 ED [IF] (150 front / 43 rear)
20-35mm f4 AL
24-90mm f3.5-4.5 AL [IF]
28-70mm f4 AL
28-70mm f2.8 AL
28-80mm f3.5-4.7
28-80mm f3.5-5.6
28-105mm f3.2-4.5 AL [IF]
28-105mm f4-5.6
28-105mm f4-5.6 [IF]
28-80mm f3.5-5.6 AL
28-90mm f3.5-5.6
28-200mm f3.8-5.6 AL [IF]
35-80mm f4-5.6
70-200mm f4-5.6
80-200mm f2.8 ED [IF]
80-200mm f4.7-5.6
80-320mm f4.5-5.6
100-300mm f4.5-5.6
100-300mm f4.7-5.8
250-600mm f5.6 ED [IF] (112 front / 43 rear)
58mm
49mm
58mm
49mm
52mm
49mm
52mm
52mm
49mm
49mm
49mm
58mm
52mm
58mm
43mm
58mm
67mm
49mm
43mm
Pentax AF (F) (late 80's)
100mm f2.8 Macro
35-80mm f4-5.6
100-300mm f4.5-5.6
50mm f1.4
135mm f2.8 [IF]
50mm f1.7
50mm f2.8 Macro
24-50mm f4
70-210mm f4-5.6 ED
28mm f2.8
80-200mm f4.7-5.6
28-80mm f3.5-4.5
85mm f2.8 Soft
35-105mm f4-5.6
250-600mm f5.6 ED [IF]
35-135mm f3.5-4.5
300mm f4.5 ED [IF]
35-70mm 3.5-4.5
600mm f4 ED [IF]
Pentax (FA-J) (D-FA)
FA-J 18-35mm f4-5.6 AL
FA-J 28-80mm f3.5-5.6 AL
FA-J 75-300mm f4.5-5.8 AL
D-FA 50mm f2.8 Macro
D-FA 100mm f2.8 Macro
D-FA 100mm f2.8 WR Macro
67mm
58mm
58mm
49mm
49mm
49mm
Pentax (DA)
14mm f2.8 ED [IF]
21mm f3.2 AL Limited
35mm f2.4 AL
35mm f2.8 Macro Limited
40mm f2.8 AL Limited
40mm f2.8 XS
50mm f1.8
50mm f2.8 Macro
55mm f1.4 SDM
70mm f2.4 Limited
200mm f2.8 ED [IF] SDM
300mm f4 ED [IF] SDM
560mm f5.6 ED AW (112 front / 40.5 rear)
12-24mm f4 AL ED [IF]
16-45mm f4 AL ED
16-50mm f2.8 ED/AL [IF] SDM
17-70mm f4 AL [IF] SDM
18-55mm f3.5-5.6 AL
18-55mm f3.5-5.6 AL II
18-55mm f3.5-5.6 AL WR
18-135mm f3.5-5.6 ED-AL-IF-DC-WR
18-250mm f3.5-6.3 AL ED [IF]
18-270mm f3.5-6.3 ED SDM
20-40mm f2.8-4 ED Limited DC WR
50-135mm f2.8 ED [IF] SDM
50-200mm f4-5.6 ED WR
50-200mm f4-5.6 ED
55-300mm f4-5.8 ED
60-250mm f4 ED [IF] SDM
77mm
49mm
49mm
49mm
49mm
27mm
52mm
49mm
58mm
49mm
77mm
77mm
--
77mm
67mm
77mm
67mm
52mm
52mm
52mm
62mm
62mm
62mm
55mm
67mm
49mm
52mm
58mm
67mm
67mm
52mm
49mm
49mm
49mm
49mm
49mm
52mm
49mm
49mm
49mm
67mm
58mm
49mm
49mm
49mm
77mm
52mm
77mm
52mm
58mm
--
77mm
--
77mm
--
--
58mm
77mm
58mm
49mm
58mm
49mm
67mm
58mm
67mm
58mm
49mm
Pentax K (A)
20mm f2.8
24mm f2.8
28mm f2
28mm f2.8
35mm f2
35mm f2.8
50mm f2.8 Macro
50mm f1.2
50mm f1.4
50mm f1.7
50mm f2
85mm f1.4
100mm f2.8 Macro
100mm f2.8
100mm f4 Dental Macro
100mm f4 Macro
135mm f1.8
135mm f2.8
200mm f2.8 ED
200mm f4
200mm f4 Macro ED
300mm f2.8 ED [IF] (112 front / 49 rear)
300mm f4
400mm f2.8 ED [IF] (145 front / 49 rear)
400mm f5.6
600mm f5.6 ED [IF] (112 front / 49 rear)
1200mm f8 ED [IF] (150 front / 49 rear)
24-50mm f4
28-135mm f4
28-80mm f3.5-4.5
35-70mm f3.5-4.5
35-70mm f4
35-80mm f4-5.6
35-105mm f3.5
35-135mm f3.5-4.5
35-210mm f3.5-4.5
70-210mm f4
80-200mm f4.7-5.6
49mm
49mm
49mm
49mm
58mm
49mm
49mm
49mm
49mm
49mm
49mm
49mm
49mm
49mm
49mm
49mm
49mm
49mm
49mm
52mm
77mm
77mm
52mm
58mm
58mm
52mm
58mm
49mm
49mm
52mm
Pentax K (M)
20mm f4
28mm f2
28mm f2.8
28mm f3.5
35mm f1.4
35mm f2 4
35mm f2.8
40mm f2.8
50mm f1.4
50mm f1.7
50mm f2
50mm f4 Macro
85mm f2
100mm f4 Dental Macro
100mm f2.8
100mm f4 Macro
120mm f2.8
135mm f3.5
150mm f3.5
200mm f4
300mm f4
400mm f5.6
2000mm f13.5 Reflex
24-35mm f3.5
24-50mm f4
28-50mm f3.5-4.5
35-70mm f2.8-3.5
40-80mm f2.8-4
75-150mm f4
80-200mm f4.5