[andy14011982]

昨在尖沙咀用e510影夜景...
本身已開左nr及noise filter....
長曝10秒冇hot pixel...不過over太多...(好似測光唔多準)...
之後曝4秒...正常曝光...ok冇問題
點知番到屋企睇相....omg...有成十幾點白點(hot pixel)..
@!#$...:smile_22: ...點解會咁咖...???
係咪因為我用左liveview會多d..??...
我試過番到屋企...蓋著鏡頭蓋曝4秒..1粒都冇...
唔用蓋影室內一張..又係4秒....有點...但唔多..亦不算明顯...
冇用liveview..
唔知各位師兄有冇遇過呢個問題呢..?

[maximilianyuen]

just a few then get used to it....

my GRD hot pix...

[Obi-Wan]

andy14011982

can u do a pixel mapping on your E510 before taking night shots?

[andy14011982]

有...不過可能之前做既時候..ccd仲未完全泠卻
今日試過做多一次pixel mapping
再試唔同秒數去曝
1,2秒都冇乜問題
4秒始終有hot pixel
不可冇之前咁難睇...冇咁顯眼

[Obi-Wan]

andy14011982

can u do a pixel mapping on your E510 before taking night shots?

[Obi-Wan]

do it once again will eliminate a lot hot pixels

[dcpower]

長時用LV係會使CCD變熱出現hot pix, 其實開black frame (NR)係最有效的解決方法,就算暴一分鍾以上都不會是問題!

[hksamsunguser]

唔買olympus!

[Snow Pig]

OM老問題

[Obi-Wan]

May be Kodak CCD 老問題 (not OM's)

[iSmaX]

竟然可以引申出係om問題=.=

部部機長曝都有咁的事架噃...

[intouch]

應該係3/4既問題..

[dcpower]

> Obi-Wan,
e-510係用PAN記CCD

其實不論係dc/dslr 只要長曝都會出熱點,時間越長越多,
最近天氣熱加上長用LIVEVIEW (CCD熱上加熱),無熱點才怪...
只要部機有NR (Black Frame)功能就算係Prosume DC曝一分鍾以上正常都不會係問題....

[maximilianyuen]

ya, but that won't apply to RAW file

and after NR the photo will be highly blur...

[dcpower]

E-500 ,60s