6個藍天白雲攝影要訣
難得遇上好天氣，打算往外走走拍下天公造美的一刻，為什麼拍出來的照片總是不夠藍，成像不夠清晰明澄？要拍藍天白雲，就要先掌握幾個小秘技：
By {link:http://www.flickr.com/photos/43875609@N05/4037613318/sizes/l/in/photostream/} Elisiss{/link}
一、善用道具
偏光鏡以及減光鏡（即灰鏡）或漸變灰鏡都是好幫手。前者可去掉雜光讓相片保持色彩高濃度，而且可以令天上的雲更有立體感，後者減少光線進入，被免於光線最強的時候拍攝時出現過曝的情況。
By {link:http://www.flickr.com/photos/alphageek/233472093/in/set-72157603605293513/}Code Poet{/link}
二、調節最適當的白平衡
由於色彩為拍攝藍天白雲其中最重要的原素之一，我們必須掌握準確相片色彩，故拍攝時我們需要留意色溫。一般數碼單鏡反光機內預設之"日光"白平衡，可反映比較接近實景原色，反映藍天白雲的色彩。
By {link:http://www.flickr.com/photos/yv/}yvon.liu{/link}
三、順光拍攝
選擇合適的拍照時間及方向。最好是順光拍攝，何謂順光，順光拍攝就是指光線照射的方向與照相機拍攝方向一致。例如太陽在東方，就應該向西方拍攝。由於被攝的景物受陽光的直接照射，陰影會在物體的後面，所以畫面往往比較明亮，但要留意的順光拍攝，攝影者的影子也很容易被拍下，因為要多加留意。
By {link:http://bigmonster.npsphoto.com/gallery2/main.php?g2_itemId=5814} TF Yeung{/link}
四、鏡頭選擇
建議初學者使用廣角鏡頭拍攝藍天白雲，比較容易突顯天空的遼闊感覺。這不僅規限於拍攝藍天主題，基本上如果想拍攝到大自然的壯麗景觀也能使用廣角鏡頭。
By {link:http://www.flickr.com/photos/annia316/1091612913/sizes/l/}Annia316{/link}
五、相機設定
一如拍攝風景，要避免景物受淺景深影響，可以使用小光圈（約F8-F11，視乎陽光順逆強度而定），並把對焦設定為無限遠。
By {link:http://www.flickr.com/photos/43875609@N05/}Elisiss{/link}
六、後製
輕微加強色彩濃度(Saturation)、對比，都能令相片更突出。一般來說，最常見的做法是在Photoshop調較亮度對比、飽和度等，也可以使用照片的Curve(曲線)來作出調較。
By {link:http://www.flickr.com/photos/taivasalla/2677281910/sizes/o/}Taivasalla{/link}
只要掌握以上六點，再加以練習構圖技巧，就能夠拍出賞心悅目的「藍天白雲」了。
很有用的六個貼士,收下了啦!謝謝!
Hi Ken,
謝謝你的支持！
Alex
我有部 CANON EOS 500D 配 18-55 kit 鏡
我想加偏光鏡影藍天白雲
有咩好介紹呢？我只是學生，價錢不要太高喔 ^^
我都係呀,有乜好介紹呀,好心急呀
偏光鏡有平有貴，如果預算不高可以購買平宜一點的，但最好選購一些薄身的比較好~
Alex
我想問下第一張相片是否用了偏光鏡去拍攝 ? 而第二張則用了減光鏡（即灰鏡）? 謝謝~
減光鏡( Neutral Density Filter - ND Filter )是否有分級數呢?
不同級數的又有何分別
Hello 大榮,
Yes, ND filters have many different levels for us to use. The most common ones we will see are ND2, ND4, and ND8. Basically the higher the number, the more light it will stop from passing through the filter.
To easily remember the amount of light that can pass through these different level of filters, you can think of it this way:
ND2 - 1/2 = 50% of light can pass through (light is reduced by 1 f-stop)
ND4 - 1/4 = 25% of light can pass through (light is reduced by 2 f-stop)
ND8 - 1/8 = 12.5% of light can pass through (light is reduced by 3 f-stop)
I hope this can help you.
Michael
我想請相片如第一、二、五張是怎樣拍攝出來??
為何可對著天空或太陽也可以不過曝 而 不只拍出景物的剪影???
救我呀!! 個UV FILTER唔肯離開個鏡頭...可以就咁加個CPL上去???
Yes...UV and CPL filters have no conflict...you can have both filters on your lens at the same time...but when removing the CPL filter you need to becareful, because 1/2 of the CPL filter is loose and can be turned in both directions and the other 1/2 is fixed to your UV filter...so you must hold on and only turn the 1/2 that is fixed to your UV filter to remove it.
TIP: if you can not remove your UV Filter, perhaps it's just too tight. You can try to use a rubber band and wrap it around your UV filter then try to turn again, this should make it a lot easier to hold on to and turn.
Michael
thanks a lot
i was too worried of breaking the filter n the lens..
i had made it thru anyways , thank you so much
Hi Michael,
Your information is very helpful.
By the way, will the picture quality down graded when using protector and CPL at the same time?
Also, can advise how to use the CPL correctly? The front piece len can turn and I saw an arrow marked on it, just do not understand.
Thanks!
Allan
我試過去買偏光鏡，但售貨員告訴我不用買偏光鏡而介紹我買UV鏡，兩者應該是有分別的吧？用途也不相同吧？
另外CPL又是甚麼呢？
CPL is the English short name of 偏光鏡
UV filter is a lens filter that limits the Ultraviolet light from entering the camera. It is just a "protector" for DSLR now.
CPL Filter = Circular Polarizer Filter = 偏光鏡
The purpose of a polarizer filter is basically used to block out "polarized" light. Polarized light means all light that are reflected from a non-metallic surface. For example, glass, and water, etc...
Glass:
A CPL can be used to filter out the reflections from a glass window so you can see into the darker interior (for example, you will be able to see the passengers in a car when the sun is bright in the sky).
Body:
A CPL can be used to filter out the reflections from the surface of a body of water so you can see through the surface (for example, you will be able to see far beyond the surface of a clear pond where normally you should only see your own reflection).
NOTE: Most light from are reflected in the air by air and dust particles and therefore a large percentage of the light coming from the sky are also polarized. Therefore when you use a CPL filter, you will be able to block out a large amount of these polarized light and you will be able to capture a darker sky and white clouds will have more details and become more prominent.
UV Filters = Ultraviolet Light Filter
As Facebook User mentioned, these filters are now commonly only used for protection perposes rather than really filtering out UV light in digital photography. But when using UV filters as a protector to your lens, be aware of the quality of your filter. Because after all, you are adding another piece of glass in front of your lens, if your filter's quality is not good, it will for sure degrade your image's quality. In more serious cases, low quality UV filters has also been known to cause autofocus inaccuracies and serious flare issues.
I hope this helps.
Michael
想問一下, 像第二張那樣, 直對太陽沒問題的嗎..??
因為很多都說不要直對太陽, 會傷到感光原件....
請問在第五個point提到, 把相機對焦點設定為無限遠?
係部相機到點設定?
每支鏡頭都有個對焦環, 一面係最近對焦距離而另一面就係無限遠.
Hi, Alex Tan
how about nikon D90 and canon eos 500d?
can u give comment?my budget below Rm3000.
i m new for dslr.
请问使用偏光镜可以拍人像吗？
dear Alex
突然發現這個網站看到裏面的文章真是獲益良多…我是一個新手…剛剛接觸攝影…可以請問alex幾個問題嗎？就是我是買佳能500D型號的，當時買的時候對鏡頭不瞭解，售貨員就給我介紹Tamron 18-200mm f/3.5-5.6的鏡頭，我就買了來用，請問這個鏡頭好不好？我買了有點後悔…
请问可以分享下镜头的效果吗?
想知道哪一种镜头适合拍风景同蓝天海洋...
請問一下,我想影風景照,用什麼鏡頭會比較好?
Hi, Alex Tan
其實我是初入門的.....主要想影風景!!!
買鏡頭可以給我意見嗎?