刚进了Rebel XTi，发两张片子

[cz15n]

看了各位的讨论，觉得都很有道理，不过有一点想澄清一下：

向右曝光并不是过曝，而是在不过曝的前提下，尽量让直方图向右靠。这样的曝光（理想状况，先不考虑当时操作的复杂性）可以最大程度地利用CCD，保存最多的信噪比（相信很多数码玩家都有这种体会，同样场景下，直方图偏右，但没过曝的RAW文件大小要比正常曝光或欠曝的文件大）。然后后期再把它拉回来。这样才能做大程度地保留了细节，还能正确曝光。

当然如果环境本身就光比特别大，还要同时保持亮部和暗部细节（当然在CDD宽容度之内），那肯定不能够向右曝光，稍微向右就过曝了。

欢迎继续讨论：）

 

[jackrabbit]

最初由 cz15n 发布

注：向右曝光技术只适用于DSLR，而且最好是RAW。

1. Most consumer DC sensors are CMOS not CCD.
2. Why is this technique not supposed to be used with non-DSLR cameras? There is no fundamental differences between digital cameras as I understand.

 

[Aperture]

最初由 jackrabbit 发布


1. Most consumer DC sensors are CMOS not CCD.
2. Why is this technique not supposed to be used with non-DSLR cameras? There is no fundamental differences between digital cameras as I understand.

成本。

 

[cz15n]

再上一张维加斯的夜景，手持拍的。

#5

 

[cz15n]

#6 Casino一角，资本主义果然纸醉金迷啊，呵呵。。。

 

[garychan]

You're not supposed to take pictures inside a casino due to security concern. You're lucky that you didn't get caught.

Many travellers do not know that there are lots of places in a foreign country that camera is prohibited. The consequence could be very serious (i.e. suspected of being a spy). So make sure you ask before pushing the shutter release button.

 

[cz15n]

最初由 garychan 发布
You're not supposed to take pictures inside a casino due to security concern. You're lucky that you didn't get caught.

Many travellers do not know that there are lots of places in a foreign country that camera is prohibited. The consequence could be very serious (i.e. suspected of being a spy). So make sure you ask before pushing the shutter release button.

That's true in most places, but not in Las Vegas. People were gambling, walking aroud, taking picture, smoking (some casino only). A Casino in Las Vegas is just more than a Casino.

 

[jackrabbit]

最初由 Aperture 发布
成本。

我的意思是NON_DSLR像机, 直方图右拉技术也适用.

 

[ymymym]

最初由 cz15n 发布
再上一张维加斯的夜景，手持拍的。

#5

铁手啊, 有降躁吗, ISO800的片子还挺细腻的.

 

[cz15n]

没降噪，用CPP拉了拉，直接就出JPG了。

 

[justinli]

搂住 第一张用的什么头啊？ 光圈好舒服。。。1。8？还有 能解释一下光圈优先的好处嘛。
我实在是什么都不懂 希望受教育

 

[cz15n]

最初由 justinli 发布
搂住 第一张用的什么头啊？ 光圈好舒服。。。1。8？还有 能解释一下光圈优先的好处嘛。
我实在是什么都不懂 希望受教育

对85mm f/1.8的头。

其实挺简单的，大光圈，使得景深很浅，只要对焦对得准，就能出效果。从焦外成像能看出来镜头的品质。

正如山东的兄弟说的，如果光圈收一点，比如2左右，成像质量可能会更好。

 

[mds]

最初由 jackrabbit 发布


1. Most consumer DC sensors are CMOS not CCD.

Are you kiding?

 

[Aeoliao]

EF85/1.8的确不错，比N的好。

小白卖了行，这个得留

 

[jackrabbit]

最初由 mds 发布


Are you kiding?

i should say most new consumer digital cameras have a cmos sensor.

even canon 5d has a cmos sensor.

canon 1d started with a 4m ccd sensor but switched to a 16m cmos sensor (for 1ds mark ii). my understanding is it's easier to make larger cmos sensor.

here is a report that supports my claim:
http://www.tmcnet.com/voip/ip-commu...n-stat-gap-between-cmos-ccd-image-sensors.htm