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枫下拾英 / 摄影艺术 / 尼康 N80 问题,请进。当我将机器设在“光圈先决”程式,面对不同拍摄主体时,用“次控制盘”调节光圈时,发现有时候,光圈不能调节到最大,有时候,就可以。是什么道理,哪位DX请解释一下,谢谢。
-wd72001(wd72001);
2003-7-2
{162}
(#1267030@0)
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变焦镜头在不同焦段最大光圈不同,比如在35mm是3.5, 在100mm是5, 看看是不是这个原因
-miketany(MIKE老狼);
2003-7-2
(#1267072@0)
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Thank you. I will test it while I go home.
-wd72001(wd72001);
2003-7-2
(#1267139@0)
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Yes, he is correct. Only professional level lens can have constant aperture, that is really expensive. For common lens, usually high aperture value at wide side and smaller value at long side
-elac(elac);
2003-7-2
(#1267876@0)