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smc PENTAX-M 1:1.7 50mm

Description and Review

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Description, Notes & Specifications

Depth of Field Guide

	f/1·7		f/2		f/2·8		f/3·5		f/4		f/4·5		f/5·6		f/6·7		f/8		f/9·5		f/11		f/13		f/16		f/22
0·45	0·45	0·45	0·45	0·45	0·44	0·46	0·44	0·46	0·44	0·46	0·44	0·46	0·44	0·46	0·44	0·47	0·43	0·47	0·43	0·47	0·43	0·48	0·42	0·48	0·42	0·49	0·40	0·51
0·50	0·50	0·50	0·49	0·51	0·49	0·51	0·49	0·51	0·49	0·51	0·49	0·51	0·48	0·52	0·48	0·52	0·48	0·52	0·47	0·53	0·47	0·53	0·47	0·54	0·46	0·55	0·44	0·57
0·55	0·54	0·56	0·54	0·56	0·54	0·56	0·54	0·56	0·54	0·56	0·53	0·57	0·53	0·57	0·53	0·57	0·52	0·58	0·52	0·59	0·51	0·59	0·51	0·60	0·50	0·61	0·48	0·64
0·60	0·59	0·61	0·59	0·61	0·59	0·61	0·59	0·62	0·58	0·62	0·58	0·62	0·58	0·62	0·57	0·63	0·57	0·64	0·56	0·64	0·56	0·65	0·55	0·66	0·54	0·68	0·52	0·71
0·70	0·69	0·71	0·69	0·71	0·68	0·72	0·68	0·72	0·68	0·72	0·67	0·73	0·67	0·73	0·66	0·74	0·66	0·75	0·65	0·76	0·64	0·77	0·63	0·78	0·62	0·81	0·59	0·86
0·85	0·84	0·87	0·83	0·87	0·83	0·88	0·82	0·88	0·82	0·89	0·81	0·89	0·80	0·90	0·80	0·91	0·79	0·93	0·77	0·94	0·76	0·96	0·75	0·98	0·73	1·02	0·69	1·10
1·00	0·98	1·02	0·98	1·02	0·97	1·04	0·96	1·04	0·95	1·05	0·95	1·06	0·94	1·07	0·92	1·09	0·91	1·11	0·90	1·13	0·88	1·15	0·86	1·19	0·84	1·24	0·79	1·37
1·20	1·17	1·23	1·17	1·24	1·15	1·25	1·14	1·27	1·13	1·28	1·13	1·29	1·11	1·31	1·09	1·33	1·07	1·36	1·05	1·40	1·03	1·43	1·01	1·48	0·97	1·57	0·91	1·77
1·60	1·55	1·66	1·54	1·67	1·52	1·69	1·50	1·72	1·48	1·74	1·47	1·76	1·44	1·80	1·41	1·85	1·38	1·90	1·35	1·97	1·31	2·05	1·27	2·16	1·21	2·34	1·11	2·84
2·00	1·92	2·09	1·90	2·11	1·87	2·15	1·84	2·19	1·82	2·22	1·80	2·25	1·75	2·32	1·71	2·40	1·67	2·50	1·62	2·62	1·57	2·76	1·51	2·96	1·43	3·33	1·29	4·44
3·00	2·82	3·21	2·79	3·25	2·71	3·35	2·65	3·46	2·61	3·53	2·56	3·61	2·48	3·80	2·39	4·02	2·30	4·30	2·21	4·68	2·12	5·13	2·01	5·89	1·87	7·58	1·64	17·72
5·00	4·51	5·60	4·44	5·73	4·25	6·08	4·09	6·42	3·99	6·70	3·89	6·99	3·69	7·75	3·51	8·69	3·32	10·14	3·12	12·56	2·95	16·50	2·74	28·36	2·48	∞	2·09	∞
15·00	11·32	22·23	10·85	24·30	9·77	32·31	8·98	45·42	8·50	63·95	8·06	∞	7·24	∞	6·57	∞	5·93	∞	5·32	∞	4·83	∞	4·30	∞	3·69	∞	2·88	∞
∞	31·50	∞	28·10	∞	21·82	∞	18·26	∞	16·35	∞	14·80	∞	12·25	∞	10·45	∞	8·90	∞	7·60	∞	6·63	∞	5·67	∞	4·66	∞	3·43	∞

(Distances in metres; Circle of Confusion is taken at 0·032 millimetres.)

Review

Recommended: Yes

References

1. Bojidar Dimitrov's Pentax K-Mount Page (http://www.bdimitrov.de/kmp/)

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23 July 2011