2015年快樂！上年開始愛上了玩具四軸飛行器，買了第一隻迷你遙控四軸機Hubsan H107C，更換了廣角鏡頭之後，成為可以行航拍自娛的好玩具，之後一直都有繼續玩。今次為了改善航拍畫面質素，買了一隻尺寸大少少的玩具四軸機Syma X5C，嘗試吊起一部微型的720p Car key cam ，看看拍攝效果能否滿足我的航拍需要。
Happy 2015! Started to love flying toy drones last year after I bought my first drone Hubsan H107C. After replacing a wide angle lens on it, shooting aerial video becoming the most important aspect for me in choosing drones. This time I tried something slightly bigger, the Syma X5C. And prepared to hook it up with the mighty 808 #16 lens D car key camera. See whether it can shoot some better video than micro drones.
買之前都做了少許功課，雖然Hubsan X4得迷你四軸都可以吊起car key cam，但飛行效果及時間都未如理想，要買一部尺寸大一點，螺旋槳大一點的飛行器才行。在Youtube觀看了許多用家分享的影片後，決定了買Syma X5C，主要因為它飛行時機身震動比較少，較適合掛相機拍攝影片。許多牌子都有推出相同尺寸的四軸飛行器，在香港比較容易找到都是大陸品牌的，好像JJRC的H8C及WLtoys的V636，選購時不妨多比較。
I did some research before buying this thing. Although Hubsan X4 can also hold a car key cam, it will make it difficult to control. So better go for something bigger in size and with bigger props. The decision has been made mainly based on the user reviews in Youtube. It fly more stable than other quads in the same size so it produces less jello effect to the video clips. During the research I found that JJRC H8C & WLtoys V636 are also good quads but I found the Syma one suit me better.
Before the boring unboxing better to see something more interesting. Let's see how it perform when lifting a car key cam. This video was shot during X'mas & New Year holidays in HK. I went to Lok Wo Sha, Wu Kai Sha & Ma On Shan Park in Ma On Shan area. Also did some flights in HKUST. It was shot mainly in early morning where nobody is nearby. Even though it is a toy but it is still dangerous. Better to avoid crowded area. The dog was attracted by the noise of the motor. He wanted to see but also afraid so it hide behind tress sometimes.
效果不賴吧？很幸運，在烏溪沙玩的那個早上，風速才每小時1公里，非常適合放飛機啊！Car key cam的白平衡並不準確，解像度也不太好，但就畫質比原裝的那個鏡頭好多了。
What do you think? Not bad for a toy grade quad. Lucky to have a very calm day in Wu Kai Shan beach so the video was quite smooth. The white balance of the car key cam is not nice resolution is not enough as well but it is already much better than the original camera on-board.好吧，開箱！『天空之眼』這個名字很土啊，哈哈。
Let's do the unboxing! Bought it in Hong Kong so it came with Chinese packaging & manual
一隻機，一個遙控器，4隻後備螺旋槳，螺旋槳保護器。
The quad it self, a transmitter, 4 spare props & the prop guards.
外觀是抄襲DJI的Phamton系列的，基本上在市場上的四軸飛行器大部分都是這個樣子的。
The outlook of it is copy from DJI Phamton series. Basically a lot of toy grade quads look exactly the same as it.
遙控器底下能夠找到充電器，Micro SD讀卡器及螺絲批一個。
Under the transmitter you will find the battery charger, Micro SD card reader and a screw driver that you can replace the props.
拿上手第一個感覺就是輕，非常的輕，感覺跟Hubsan X4的重量差不多，只不過是尺寸大了，塑膠機殼很薄，用料並沒有Hubsan X4的好，但還OK。
First time on hand the feeling is light. Seems it weight similar to the Hubsan X4 but bigger. The plastic shelf is very thin. Built quality is less good than Hubsan X4 but still ok.
跟iPhone 5s比較。這種尺寸其實也不算太大，帶出去玩都應該蠻容易的。其實之前大男孩都受不住誘惑曾經擁有350-sized的四軸，但就是因為太大部不方便很少玩，最後給我賣掉了。
Take a look on the size of it compare to an iPhone 5s. Actually it is still a mini drone so bringing it out doesn't cause any trouble. I did have a 350-sized quad from Walkera. I seldom play it so it was sold recently.
Size comparison with a Hubsan H107C.
底腳很矮，對相機保護不好，但就非常便攜。跟機來的也是一個720p的鏡頭，可以拍照片及影片，當然質素就非常平平，而且角度比較窄。
The land skids are short with a short ground clearance. It makes it easier to carry around but the protection of the camera is affected. It came with a 720p camera that shoot both pictures & videos. The quality of the camera is "toy grade" with a narrow FOV.
相機由主電池供電，而且可以通過遙控器操控開始及停止拍攝。
The camera is powered by the main battery. You can control start & stop recording by the transmitter.
跟機鏡頭拍攝效果：
The sample video taken by the inborad camera:
遙控器下方所以按鍵都是假的。飛行器的操控反應有2檔，可以在遙控器選擇，低反應模式非常適合用來航拍，轉向時飛行器不會過傾斜，畫面移動幅度不會過大。高反應模式就適合運動飛行，翻滾及大風的日子時放飛。
The buttons near the LED display of the transmitter are fake. Don't know why they insists to place buttons there. There are 2 speed modes that can be toggled by pressing the top left button. Low speed mode is good for shooting video because the tilt angles will be limited. High speed mode is good for fighting wind and do tricks.
電池蓋及有了方便很多的開關按鈕。
Battery cover and the on/off button.
把電池蓋拆下，是時候綁上car key cam。
The battery cover can be removed. Time to connect the car key camera.
材料及價錢，一共才HK$620。飛行器一隻，橡筋兩條，海綿一片，Car key cam一個，垃圾袋鐵絲一條。
Here are the ingredients & price. Total cost will be HK$620. Apart from the quad itself i got myself 2 thick rubber bands, 1 foam, a car key camera & a metal string (that we use to tidy up rubbish bag in HK).
我用上了一個叫808 #16 Lens D的Car key cam，因為它夠輕，鏡頭比較廣角，720p的mov影片也能夠直接輸入iPad方便剪輯流程。除了影片，它也可以用Time Lapse模式拍相片，所有參數設定要連接Windows用軟件設定。
I picked up the 808 #16 Lens D car key camera. It is super light that will be good for toy grade quad. I like the Lens D version since it is wide angle camera. it records 720p mov format that can be imported to iPad directly for further editing. It can also shoot time lapse photos but do not have high hope for the picture quality. All camera setting has to be changed after connecting a Windows PC.
加上海綿的原因是用來吸震的，實際使用後，效果為『好過無』XD
The foam was used to absorb the vibration produced by the quad itself. After testing the effect is "better than nothing" XD
我綁！Just hook them up by 2 rubber bands.
加上垃圾袋鐵絲作為安全繩，『希望』能避免相機飛脫。
The metal string is acting as a safety cable. Wishing the camera will survive after crashes.
大功告成！
It's all done.
It survives the test flight so consider done!
掛上808 #16後的Syma X5C飛行時當然跟使用跟機相機會時會有一點差異，但並不明顯，操控並沒有差很遠，都尚算靈活。但還有兩個問題有待解決，第一，前面螺旋槳及馬達被攝入影片內，需要將鏡頭角度適度向下傾斜，但要找到一片適合的海綿。第二，掛car key cam後飛行時間短，原裝的3.7v 500 mah電池只能持航不到5分鐘，換了650mah的好一點，大約有6分鐘左右，要找找更大容量但都能塞進電池倉的電池。
The flight time is shorten after replacin the inboard camera with a 808 #16 but it is not obvious. Flight performance is similar it is still agile enough to fly. There are still 2 problems to be solved. Firstly the props & motors in the front will appear in the video. I need to find a way to tilt it down a little bit. Second of all, the flight time is too short with the original 3.7v 500 mah battery. It last less than 5mins. I bought 2pcs of 650mah batteries from Walkera it last around 6 mins. I saw somebody is using a Turnigy 750mah battery on his X5C & it works well. Need to see where I can find it in Hong Kong.
經過兩個星期左右的飛行體驗之後，來個總結：
-在室外尺寸稍為大一點的X5C比迷你四軸容易飛，漂移會比較少，飛高之後也容易被看到。
-但不要對遙控距離有太大的期望，跟迷你四軸差不多的。
-遙控器大小對手掌小的人剛剛好，又不會太大（像偉力V222的那個）。
-如果注重航拍，絕對建議換掉跟機鏡頭，同時要使用大容量電池。
-螺旋槳下面的大齒輪會容易吸引污跡，尤其在草地上升降，很容易積聚小草或沙石，要注意清理。
-底腳很矮所以降落時要小心，盡量找平地角落避免螺旋槳大到石頭或草葉，但就是因為底腳短所以非常方便攜帶。
-航拍是遇上大風的話，應該盡快改用高反應模式，機身輕被風吹著的話會急速漂移，低反應模式是不夠力抗風的，要小心被風吹走。
-馬達聲浪不算太高。
-底部的指示燈算是清晰，飛高後還能顯示方向，但飛遠了的話就變得很難辨別前後。
-絕對夠力掛808 #16 car key cam進行飛行及拍攝。
-航拍時遇上強風的話，畫面會變的很震動，如果要拍片，要選擇風速較少的日子，影片效果會顯著穩定很多。
-有了機身的開關按鈕真的方便很多。
-續航時間的話，其實我覺的650mah已經很夠用，同一地點飛久的話，拍攝出來的畫面都其實是一樣，但如果要想玩長時間一點，好像還有750mah的電池選擇。
-雖然我還是喜歡改裝後的Hubsan H107，這部Syma X5C也很適合我的要求。
Conclusion after 2 weeks of flights:
-In Outdoor it drifts less than micro quads and easier to be seen at height.
-Range is short it is similar to Hubsan X4.
-The size of the transmitter is good for small palm guy like me. Doesn't like the crazy bulky transmitter from WLtoys V222.
-If video shooting is important to you, replace the camera & use a larger battery.
-The large gear below the props will get dirty easily if you play on grass or sandy field. Periodic cleaning is necessary.
-Ground clearance is very short so better land on somewhere flat. You don't want to see the props hit rocks & long grass during landing.
-When there is strong wind, forget about the video switch to high speed mode immediate. Low speed mode cannot withstand strong wind.
-The motors are not noisy which is good.
-The LED lights are useful when it fly high. But it doesn't work well when it is far away from you.
-It definitely can lift 808 #16 car key camera.
-The video will be shaky when it meets wind. If you want a stable video, pick up a clam day to fly. It records very stable video on clam day.
-The on/off button is so nice to have.
-Flight time is ok with a 650 mah battery. If you are shooting video you don't need that long time. Go for 750 mah if you really need to.
-Even though I still prefer the modded Hubsan H107C, Syma X5C is also a good toy.
#2015.01.08
在西貢多拍了一段片，無風的地方，飛得很穩定，沙灘上飛就被風吹飄了。
Another video shot in Sai Kung. It flies steadily without wind. But will be easily pushed by the sea breeze.
#2015.01.11
嘗試掛一部重一點的Mobius car key cam，畫面是1080p的。
Tried to lift a Mobius car key cam which is heavier than 808 #16.
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