近日收到不少網友意見,指 DCFever.com「吹水閒聊」充斥愈來愈多粗言穢語、人身攻擊、誹謗等不理性討論。作為 一個以攝影興趣為主題的網站,此等漫罵式討論已超出 DCFever.com 設立討論區之原意。DCFever.com 呼籲大家以 攝影交流為目的作理性討論,並正密切留意事態的發展。
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platz
註冊: 2004-11-02
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hotpixel problem Post time: 4 月 2 日 |
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I am using the hotpixel test software to test my new camera and have found some 'hot pixels', at different areas of the CCD(strange), at different times (I tried 2s, 4s,8s, 15s and 30s). I wonder if they are 'real' hot pixels. If they are, I will have to return for a exchange. I set up the 'threshold for hot pixels at 40' most of the time.
Can any brothers help here?
Thanks.
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老叟
註冊: 2003-04-22
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Re: hotpixel problem Post time: 4 月 2 日 |
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that's what it supposes to be, slow shutter always comes with hotpixels!!
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wtfgary
註冊: 2003-03-07
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Re: hotpixel problem Post time: 4 月 2 日 |
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platz my friend, it is normal to have hot pixels when you use slow shutter. I have similar software myself, look at the instruction and it asked you to test it with fast shutter time. 2s and up is just too much.
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platz
註冊: 2004-11-02
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Re: hotpixel problem Post time: 4 月 3 日 |
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Thank you brothers! I think that I should not have worried this too much. I rarely use anything over 2s anyway.
I have also found that there are some cases of out-focus on my 350D, which looks good on the view finder, not just on the long lens like 70-200 f4L, it happens even on the 50mm f1.8 when I try to do some close focus shots!!! May be I should consider taking it to the Canon CS for tuning as well.... :-(
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