Image sensor format: Difference between revisions

Revision as of 13:33, 26 October 2022

Revision as of 09:37, 30 December 2022

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* 30 mm² area 1/2.3" original [[Pentax Q]] (5.6 crop factor). ''Current Q-series cameras have a crop factor of 4.55.''

When [[full-frame digital SLR|full-frame]] sensors were first introduced, production costs could exceed twenty times the cost of an APS-C sensor. Only twenty full-frame sensors can be produced on an {{convert|8|in|cm}} [[silicon wafer]], which would fit 100 or more APS-C sensors, and there is a significant reduction in [[Semiconductor device fabrication|yield]] due to the large area for contaminants per component. Additionally, full frame sensor fabrication originally required three separate exposures during each step of the [[photolithography]] stageprocess, which requires separate masks and quality control steps. Canon selected the intermediate [[APS-H]] size, since it was at the time the largest that could be patterned with a single mask, helping to control production costs and manage yields.<ref name=canon-wp>{{cite press release

|url=http://www.robgalbraith.com/public_files/Canon_Full-Frame_CMOS_White_Paper.pdf

|title=Canon's Full Frame CMOS Sensors