富士胶片 GFX 50S 评测

在摄影领域，普遍的理解是：胶片画幅越大，图像的细节就越丰富。这是使用中画幅或大画幅拍摄的优势之一，不同于当今全画幅相机中常见的 35mm。

Fujifilm 凭借这一优势推出了其GFX 50S数码中画幅系统。这款专业无反相机单机售价为6,500美元，实属“亲民”之选。让我们一同探究，它是否适合那些不满足于仅作为爱好者的用户。

设计与建造

GFX 50S 采用类单反机身设计，通体黑色，握把造型熟悉。

机身采用富士胶片引以为傲的优质材料打造。此处，他们使用了镁合金框架并进行了密封处理，因此手感高端，同时坚固耐用。

该公司的复古风格延伸至GFX系列，配备用于调节设置的物理拨盘。这些拨盘中央设有按钮，可将当前设置锁定。

左侧是带有纹理锯齿状边缘的 ISO 拨盘。此处还可见手动对焦与自动对焦切换开关。

右侧设有用于调节快门速度的拨盘，角落处则设有一个次要显示屏，可快速显示关键设置信息。当相机处于关闭状态时，该屏会显示存储卡剩余可用拍摄张数以及电池电量。

配备一块3.2英寸、236万像素的可翻转触控LCD显示屏，您可在此构图、调整设置，并在查看照片时进行滑动和缩放。电子取景器则是一块可拆卸的369万像素 OLED 屏幕，通过相机的热靴接口连接。

其LCD触摸屏为用户提供了灵活的观看体验，支持翻转和伸展。它可在垂直和水平方向上倾斜。

打开多个翻盖后，我们可以在左上角看到直流电源输入接口、一个microUSB（micro-B）USB 3.0/USB 2.0接口、远程快门接口以及HDMI Micro接口。旁边则是麦克风和耳机接口。

Fujifilm 将电池仓置于机身左侧。我们赞赏这一设计，因为它解决了常见问题，并便于在相机固定于三脚架时轻松拆卸和更换电池组。

同时，由于GFX 50S面向专业人士，因此可同时容纳两张mini SD卡。

物理按键易于使用，操作直观。在我们短暂的使用过程中，唯一感觉略显不自然的按键是位于显示屏正上方的播放和删除按钮。这些按键无法直接触及，必须松开握持才能按下。不过，若将相机安装在三脚架上，则能更轻松地访问这些按键。

尽管其外形较为 bulky（在连接 LCD 显示屏处有一块额外的厚重部分），但其重量仅为 740 克，并不重。人体工学设计也值得称道，握持轻松。不过，若回顾该公司过往的成像产品，这一特点出自日本厂商之手也就不足为奇了。

性能表现

内部，富士胶片 GFX 50S 配备了一块带有拜耳滤镜阵列的 5140 万像素中画幅 CMOS 传感器。图像处理由该公司专有的 X-processor Pro 处理器负责，该处理器此前已在富士胶片 X-Pro2 上亮相。

其ISO起始范围为100至12800，并支持扩展ISO从50至102400。快门速度最快可达1/4000秒。

GFX 50S在光线充足时能够准确对焦，但其对焦速度仍不尽如人意。根据我们的实际体验，完成对焦大约需要1.5秒，而在这期间，摄影师可能已经错失了一生难遇的拍摄机会。

在优点方面，其AF点选择摇杆非常实用，因为您可以随时指定对焦位置。不过，一旦场景变暗，会对自动对焦系统构成轻微挑战，尤其是当主体移动时。

如果主体对焦清晰，这将是一次意义非凡的拍摄。| ISO 8000，1/60 秒，F2.8

在本地演出中使用，当时乐队正在演奏并四处移动，由于现场光线昏暗且为了在不使ISO过高失控的情况下尽可能获取更多光线而使用了F2.8光圈，因此拍摄出了大量柔和失焦的照片。

此时闪光灯将大有用处。

其3.2英寸可翻转触摸屏也让预览照片变得轻松许多。我们只需通过捏合手势即可轻松放大或缩小，以检查对焦是否准确——从而无需反复旋转变焦拨盘。简单滑动即可切换查看下一张或上一张照片。同样 effortless。

图像质量

Since we're talking about a medium format camera, details are definitely noticeable than when shooting with a full-frame. We especially like how it reveals the strands of the hair or the eyelashes when shooting portraits.

ISO 800, 1/30 sec, F2.8

The above photo was taken at night with minimal lighting. When cropped to 100%, details are still intact with a bit of noise seen.

Colors are lively depending on what color profile you shoot. The GFX 50S also features different film simulations so you can shoot in Black and White with different profiles as well as in Sepia for that warmer look. Check out the sample photos:

Here are some more portraits:

Sadly, video-recording maxes out at 1080p at 30fps even though most cameras today (even midrange models) can already shoot 4K. This might be because the company is mainly targetting the photographers' scene more than the videographers for this camera. Video quality has the same impressive details when there's enough light around. Shooting low light scenarios gave off acceptable image quality but there are digital noise present due to the needed high ISO. We have a sample video:

Battery Life

As for battery life, the 50S carries a 1250mAh battery capacity which is of course removable. We were able to exhause a fresh pack in one session with a combination of shooting photos and videos. We'd say that the battery life is enough to fully enjoy the camera, but for professionals who shoot for hours straight, an extra pack or two is highly-recommended.

Conclusion

There are numerous things to like about the GFX 50S -- there's the light body, generally good ergonomics for easy operation, lovable AF-point selection stick, accurate focusing in a well-lit environment, tilting display accessible via touch, and amazing details thanks to its medium format setup.

It doesn't break free from faults, though, as we find its autofocus to be slow and could miss important shots. Places with little light are also its weakness and we would rather use manual focus to effectively lock onto our subject.

The GFX 50S was officially introduced in the Philippines at the recent PhotoWorld Asia 2017 and has a price tag of Php366,990 for the body only. Our unit came with the GF 63mm F2.8 R WR lens which costs another Php83,990 and comes with its own aperture ring for manual adjustment. This might be a steep price for a camera but for a digital medium format shooter, this is actually quite cheap as others go beyond the $10,000 price mark.

Fujifilm GFX 50S key specs: