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zebra:(1) PTB: 3rd order Petzval blur 6Y0k}+j|>E 只有場(chǎng)曲時(shí),在成像面形成圓斑之尺寸,應(yīng)該是半徑。 J`a$"G B. 但場(chǎng)曲有正負(fù),此值也可以是正或負(fù)。(2) PTZ: Petzval surface curvature nIJ2*QJ ....... (2012-05-12 00:45) 4%1sOnl