[卍明仔卍]

如果比大家選
假如夜晚要用iso400 曝半分鐘先有d野睇.
會用低iso 曝長時間還是高iso 曝短時間可以noise細d呢
同埋用raw的話係咪可以吾使即時用機內除noise. 番屋企慢慢攪都除得走noise?

本人用500d..

[GBAmon]

用低iso 曝長時間noise細d

[YOYOMAN_202016]

用低iso 曝長時間noise細d X2

[小小生]

我會用低 iso 菲林長曝,絶對唔會有noise

[卍明仔卍]

THX~

[h0001244]

我會用低 iso 菲林長曝,絶對唔會有noise ..........Absolutely Agree ! ! !
And there would not be any over-exposed (dead white) in film

[klchan23]

For long exposure, the sensor will have noise cause by current, called Dark Current. This is not as same as the ISO noise. This kind of noise is identical in every shooting. Therefore, this can be corrected by software easily. In camera like 5DII, it has a build-in function to cancel out this kind of noise. The method is to expose the sensor in dark in the same amount of time that you expose for your photo. The dark current noise will appear on the black photo. The software will use this as a map to cancel out the dark current noise on your photo.

ISO noise will more complicate and it is not easy(impossible to corrrect 100%) to cancel out. Therefore, always use the lowest ISO possible to take your photo to avoid noise.

[卍明仔卍]

THX KLCHAN23 兄 你咁講,
會吾會就係機內置的長時間爆光除noise功能時
影一分鐘相佢又計大約一分鐘數,佢背後就係做緊一次長時間爆光,用黎cancel番剛剛影完果張相的noise?

之前以為佢類似iso 果d計數, 用附近的color黎計番點noise的色.

[klchan23]

Ming Hing,

Yes but the camera didn't do it in the background. It does the simulation shoot after you take the 1st shoot. Your LCD will black out for the same amount of time of first shoot. In the user menu, it said you can still take photo when the camera does the simulation. But I never try it before. I read some article in oversea forum. It said you can do the simulation shoot later. And do the cancelation in Post-process. This way you can save time on taking photo. For example, you take a 1 min exposure photo., then you have to wait for 1 min for the camera to finish the simulation. Then you can see the preview in the LCD. You may have to do some seaching on this method.

[siubi09]

ISO400暴30SEC先有野睇? 你玩偷拍呀?定F32呀?

個ANS 要睇你易咩WOO

[卍明仔卍]

其實我想影依d..
之前用pan lx2影 iso100 暴一分鐘, 黑麻麻的山變左咁覺得好得意:
[img]http://photos-h.ak.fbcdn.net/hphotos-ak-snc1/hs272.snc1/9921_158599270658_611985658_4080511_4444450_n.jpg[/img]
但影一分鐘後又要等一分鐘.
咁而家轉左500d又想影番咁上下野以為快左
[img]http://i45.photobucket.com/albums/f91/briantse/IMG_9614.jpg[/img]
好似iso100暴左三十幾秒.不過又係影一分鐘等一分鐘先有野睇...

想緊好吾好推高iso算.因為高iso又係noise, 長暴又係noise...

部500d 攪緊除noise就好明顯影完會show個busy出黎但其他功能,對焦都用到,不過按快門就吾郁....

[iversonhui]

除noise咪又係品質交換

[siubi09]

如果你想影番相1既, 下次試下ISO100 F16 /F18 90秒

你第2張相邊個FRD靠害左下角開左閃定車頭燈?左右色不平均, 做咩唔用灰卡?

[卍明仔卍]

第2張相有人著左電筒照左野條路...