[lunar]

如題
(早前上SONY陳列室玩, 部A900配了閃燈, 直倒, 24-70; 嘩~~~非好重; 直倒持機時重得黎個重心好偏埋一邊.....等等, 想聽多D師兄用家的見解)

[boxbox]

heavy means pro u see other brand top model always heavy

[panasg1]

嘩~~~非好重; 直倒持機時重得黎個重心好偏埋一邊
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same as my consideration, hard for carrying to travel

[Danny Wong]

初步的分析我在用家心得寫過，如有興趣請参考！
到現在已经用了差不多两個月，除了ISO問題之外並沒有找到其它重大决點。反之找到一些優點！
因A900像素高的原因，在細節方面都表現好過D700及D3，不由自已不信。我再声明我不是那一家的fans。但在整體當然輸給D3喇!但以性價比而言也是不失為一部好機！
上週用两部机作了一些簡單比較，同樣大家在M mode情况下更改快門速度，結果D3与A900有不同的運作方法使照片有不同較果。A900会因應快門更改EV，而D3会因應快門更改ISO。两者出來較果各有千秋。以上都是我個人愚見，只作分享！

[fallbackskiing]

I am a "new hand" too.
Wish to understand more....
Since A900 is a full frame model, expect more light can get in to the sensor but why ISO is not good?
On that other hand, for professional user point of view, is that so usual to use high ISO? They have a lot of money to by F1.4 or F2.8 lens! Right?
This always confusing me and hope brothers give me more lessons.

[liklikmomo]

answer 1: Same size of sensor with more pixels...you can expect each pixel's exposure to light will be less...

answer 2: normal people/ studio photographers not usual to use very high ISO, but for people like reporters/ sports photojournalist, they sometimes would need to shoot thing in high speed indoor and cannot use flash/ or flash is useless due to the long distance from the subject. At those instances F1.4 or F2.8 cannot help too much, what they need would be higher ISO to achieve safely shutter speed.

Afterall, apart from use in indoor sport shooting, a900 is good for most scenarios with lower ISO requirement~