smc PENTAX-A 1:1.7 50mm

Description and Review

smc PENTAX-A 1:1.7 50mm lens.

Description, Notes & Specifications

Depth of Field Guide

 f/1·7f/2f/2·8f/3·5f/4f/4·5f/5·6f/6·7f/8f/9·5f/11f/16f/22
0·450·450·450·450·450·440·460·440·460·440·460·440·460·440·460·440·470·430·470·430·470·430·480·420·490·400·51
0·500·500·500·490·510·490·510·490·510·490·510·490·510·480·520·480·520·480·520·470·530·470·530·460·550·440·57
0·600·590·610·590·610·590·610·590·620·580·620·580·620·580·620·570·630·570·640·560·640·560·650·540·680·520·71
0·800·790·810·780·820·780·820·770·830·770·830·770·840·760·850·750·850·740·870·730·880·720·890·690·950·661·01
1·000·981·020·981·020·971·040·961·040·951·050·951·060·941·070·921·090·911·110·901·130·881·150·841·240·791·37
1·501·451·551·451·561·431·581·411·601·401·621·381·641·361·671·331·711·311·761·281·821·251·881·162·131·072·54
2·001·922·091·902·111·872·151·842·191·822·221·802·251·752·321·712·401·672·501·622·621·572·761·433·331·294·44
3·002·823·212·793·252·713·352·653·462·613·532·563·612·483·802·394·022·304·302·214·682·125·131·877·581·6417·72
10·008·2212·767·9713·427·3715·546·9218·046·6220·386·3623·435·8434·875·40∞ 4·95∞ 4·53∞ 4·17∞ 3·29∞ 2·63∞ 
∞ 31·50∞ 28·10∞ 21·82∞ 18·26∞ 16·35∞ 14·80∞ 12·25∞ 10·45∞ 8·90∞ 7·60∞ 6·63∞ 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/)