Wilhelm Chang Photography

(Via Digital Camera World)
就在Nikon剛推出D5300，而D5200及D5100又尚未停產之時，
這三台相機讓其所瞄準的客群 -業餘玩家或剛從DC升級的人有了更多樣的選擇。
但這三台相機之中哪一台又最能符合你的需求呢?
Digital Camera World這次整理出了13點關鍵差異來幫助你分析。

01 感光元件

• D5100 1620 萬畫素
• D5200 2410 萬畫素
• D5300 2420 萬畫素 (無光學低通濾鏡)

這三台相機都是DX格式的CMOS感光元件，但較舊的D5100是1620萬畫素，D5200及D5300則同為2400萬畫素。

這是很明顯的增長，但在現實世界中，你需要最好的鏡頭和完美的攝影技巧才能看出其中的差異。
但D5200和D5300也不太一樣，D5300移除了光學低通濾鏡將帶來更佳的影像細節。

這片綠競本來是用於移除拍攝細微重複圖形和布料時，摩爾干涉效應產生的條紋。
但Nikon認為這類等級的感光元件解析度帶來的銳利度可以消除這方面的風險。

All three cameras have DX-format CMOS sensors, but where the older D5100 has 16.2 million pixels, the D5200 and D5300 both have 24 million pixels.

It’s a sizeable increase, but in real-world shooting you’ll need the best lenses and perfect shooting technique to see the difference.

The Nikon D5200 and D5300 are not quite the same, though. In the D5300 the OLPF (Optical Low Pass Filter) has been removed to make very fine detail sharper still.

These filters are used to prevent moire interference effects with fine patterns and fabrics, but Nikon has decided that at this level of sensor resolution the gain in sharpness offsets any increased risk of artefacts.

02 ISO 範圍

• D5100 ISO 100-6400, 可延伸至Hi 2 25600
• D5200 ISO 100-6400, 可延伸至Hi 2 25600
• D5300 ISO 100-12800, 可延伸至 Hi 1 25600

雖然增加像素通常會降低高ISO時的表現，D5200與D5100有相同的ISO範圍。
D5300又更進了一步，將正常ISO範圍增加到ISO 12800，並且保持最高延伸ISO值為25600。
Nikon表示這是因為搭載了全新的高效能Expeed 4影像處理器，並將此當作D5300的特點。

The Nikon D5200 kept the same ISO range as the Nikon D5100, despite the increase in resolution, which would normally reduce high ISO performance.

The Nikon D5300 goes a step further, expanding the normal range to ISO 12800, but keeping the maximum ‘expanded’ value of 25600.

Nikon says this has been made possible by the D5300′s new and more powerful Expeed 4 processor, and cites the high ISO performance as one of the new camera’s key attributes.

03 影像處理

• D5100 Expeed 2
• D5200 Expeed 3
• D5300 Expeed 4

不只相機本身會進步，他們搭載的處理器也會。
新一代的影像處理器持續提供更好的影像品質，特別是在高ISO降噪時的表現。
D5100使用了D5100 Expeed 2，D5200則是更先進的Expeed 3，而D5300則有最新的Expeed 4系統。

It’s not just cameras which are continually developed, but their on-board processors too. Successive generations of Expeed processors have enabled Nikon to keep improving the image quality, particularly the high ISO noise reduction.

The Nikon D5100 uses an Expeed 2 processor, the D5200 has a more advanced Expeed 3 processor and the D5300 uses a brand new Expeed 4 system.

04 連拍

• D5100 4fps
• D5200 5fps
• D5300 5fps

較快的處理器通常也代表更高的連拍速度，雖然D5200比D5100稍微提高了一點連拍速度，
新的D5300則維持在5fps。

Nikon表示Expeed 4處理器是用以提高影像品質而非連拍速度。

Faster processors can often allow faster continuous shooting speeds too, but while the D5200 boasts a slight speed increase over the D5100, up from 4fps to 5fps, the new D5300 sticks with the 5fps maximum continuous shooting speed.

Nikon says the Expeed 4 processor has been used for improved image quality and not higher continuous shooting speeds.

Nikon D5300 vs D5100 vs D5200: 05 Autofocus

• D5100 Multi-CAM 1000 AF 感應器 擁有11 AF 點及 1 個十字對焦點
• D5200 Multi-CAM 4800DX AF 感應器擁有39 AF 點及9 個十字對焦點
• D5300 Multi-CAM 4800DX AF 感應器 擁有 39 AF 點及9 個十字對焦點

D5100和D5200有比較顯著的對焦性能差異，D5200有著更為先進的39點自動對焦系統，
僅次於Nikon的專業機種。

Nikon在D5300上沿用了這個系統，對這個級別的相機來說是個快速又強大的對焦系統。

The big step-change in autofocus systems came between the D5100, which used a basic 11-point AF system, and the Nikon D5200, which swapped to a much more advanced 39-point AF system only one step down from Nikon’s professional cameras.

Nikon keeps that same 39-point AF system for the new D5300. It’s fast and powerful for a camera in this class.

06 觀景窗

• D5100 光學五面鏡, 95% 覆蓋率, 0.78x 放大率
• D5200 光學五面鏡, 95% 覆蓋率, 0.78x 放大率
• D5300 光學五面鏡, 覆蓋率有待確認, 0.82x 放大率

這三台相機都使用五面鏡而非較貴的五稜鏡設計。
這對這等級的相機已經是蠻相稱的了，然而，D5300有著全新設計的五面鏡系統，提供了稍佳的放大率。

All three cameras use a pentamirror viewing system rather than a more expensive pentaprism design. It’s perfectly adequate for this kind of camera, though, and the Nikon D5300 features a redesigned pentamirror which offers slightly increased viewfinder magnification.

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