福伦达25mm F0.95镜头测评，by NIGEL COOPER

再见

之前就一直有关注福伦达F0.95的镜头，最近发现NIGEL COOPER还做了测试，闲来简单译一篇，感兴趣的可以随便看看啦，欢迎指正。

voigtlander 25mm mft Strictly speaking the Voigtlander 25mm F0.95 Nokton Micro 4/3 lens was not made specifically for the Panasonic AF101 film-like camcorder, but it might as well be. I say this because the Voigtlander 25mm F0.95 micro 4/3rd lens and the Panasonic AF101 camcorder are a marriage made in heaven.

福伦达25mm的F0.95镜头是M4/3卡口，它并不是为松下AF101电影般的摄影机特别，但它也可能是。这样说是因为福伦达25mm的微4/3rd F0.95镜头和摄像机松下AF101是天作之合。


From what I can gather, the Voigtlander 25mm F0.95 is the very first non-Olympus/Panasonic native MFT (Micro Four Third) lens by such a high quality and highly respected lens manufacturer. Considering this is Voigtlander’s very first MFT lens, they have absolutely nailed it in every way.



总之就是说福伦达25mm的F0.95镜头品质很好。


The Voigtlander is ridiculously fast at F0.95, yes that’s right, F0.95. How fast is that? Well given that the Panasonic AF101 has incredibly low noise that is none-existent even with the gain switched in at +9dB, with amazing low-light shooting capabilities also. With the Voigtlander F0.95 lens you can pretty much shoot black bats in a coalmine with no additional lighting; that’s how fast this lens is.



福伦达镜头有着F0.95的超大光圈，能让AF103拥有难以置信的低噪点，即便是在增益开到+9db的情况下。你可以在没什么照明的情况下进行拍摄。


The super fast aperture of this lens also allows you to achieve incredible depth-of-field control if beautiful bokeh shots are your thing.



超大光圈能还能实现难以置信而的景深控制。这谁都知道。


Below picture shows me setting up the Panasonic AF101 with the Voigtlander lens, a Chrosziel matte box and a Formatt polarising filter and ND grad, ready for a time-lapse shot to be filmed over 42 minutes at 1 frame every 10 seconds, that will equate to a final sequence of 10-secons.

下面图是AF103加了福伦达镜头，一个Chroszie matte box，偏光镜和ND。拍的时间流逝，拍了超过42分钟，每10秒拍摄一帧。

nigel cooper filming


There is a lot of confusion other focal lengths and field-of-view regarding various lenses and the Panasonic AF101. I will try and make this simple for those who don’t fully understand these Scientifics. Firstly, it is worth remembering that the actual focal length of a lens does not change no matter what camera it is on. For example, a 50mm F1.4 Nikon AIS lens designed for a 1980’s Nikon F3 stills photographic camera, is going to remain a 50mm focal length lens, whether it is on a Nikon F3 stills camera, or a Panavision motion film camera, or the Panasonic AF101; nothing changes. The only thing that changes is the size of the sensor, or film frame size. It is when you change the sensor size that the lens’s field-of-view changes.



各种镜头和松下AF103配合起来视野都会有所变化。（是不是这么说）首先，值得记住的是一个镜头的实际焦距不会改变，无论它是什么相机上。例如，一个50mm的光圈f1.4尼康用在它原配1980年的尼康F3照相机上，将继续保持50毫米焦距，无聊是用在Panavision或胶卷相机或松下AF103上都一样。唯一的变化是传感器不一样，或电影画面大小的变化。如果传感器大小边了，视野也会变了。


In a nutshell, a 30mm lens on a 35mm movie cinema camera will have the exact same field of view as a 25mm lens on the Panasonic AF101, or a 50mm lens on a stills camera.



概括地说，30mm镜头在35mm摄像机上的视野就像25mm镜头安在AF103上的效果。


Take a look at this lens comparison list:



看看这个镜头对照表吧：


25mm on the AF101 = 30mm on cinema = 50mm on stills.


28mm on the AF101 = about 33mm on cinema = 56mm on stills.


50mm on AF101 = 60mm on cinema = 100mm on stills.



85mm on AF101 = 100mm on cinema = 170mm on stills.


panasonic af101

What does change is the field-of-view, which could be argued as being the focal-length equivalent. So it could be argued that a 50mm F1.4 lens designed to fit a stills full-frame photographic camera becomes the equivalent focal length to a 100mm lens when attached to the Panasonic AF101 (via an adaptor from MTF Services of course, see www.mtfservices.com), in reality, the lenses field-of-view becomes that of a 100mm lens.


So, why this little explanation about field-of-view and focal lengths? It is so I can explain what you are getting with the Voigtlander 25mm lens when it is fitted onto the Panasonic AF101. Note also that the Voigtlander lens is a native micro 4/3rd (MFT) lens so no adaptor is required. Voigtlander’s focal length of 25mm equates to the equivalent field-of-view of a 30mm lens on a 35mm cinema motion picture camera, or an equivalent field-of-view to a 50mm lens on a 35mm stills photographic camera. This is all very old-school actually, at the end of the day, the Voigtlander 25mm is just that, a 25mm lens; pop it onto the AF101 and look at the field of view for yourself. If you are used to shooting stills photographic work, basically, the Voigtlander is a ‘50mm standard lens’. And in my opinion, the Voigtlander 25mm F0.95 should be the first lens you go out and buy for the Panasonic AF101 camcorder, it is the ultimate standard lens for this camcorder.



通过以上解释就不难懂，福伦达的25mm使用在AF103上相当于30mm的镜头的35mm电影摄影机。所以福伦达25mm F0.95镜头绝对是AF103终极标准的镜头。


The Voigtlander 25mm lens is made up of 11 precision elements arranged in 8 groups. Its minimum aperture is F16 with 10 aperture blades. It weighs in at 410g with an overall length of 70mm. Focusing is external, but don’t worry because the lens only increase in physical length by less than a centimetre. It is built like a bomb in a heavy-duty all-metal construction; even the focusing barrel is tough metal. This lens is tougher than John Claude Van Damme, and it’s a lot sharper too ;)



该福伦达25mm的镜头是由8组11片组成。其最小光圈为F16光圈叶片10。它的重量410g和长度70mm。对焦是外部的，但不要担心，因为镜头的长度变化会在1厘米以内。全金属结构。panasonic af101 with voigtlander 25mm lens


松下与福伦达25mm的镜头af101


It’s made in Japan to the very highest standards. The build quality reminds me of Zeiss lenses from Germany; the precision and workmanship is top drawer. It comes with a lens hood, which you can leave on the lens permanently as the lens hood has a 67mm lens cap diameter. You can also put a screw in filter directly into the lens hood, and then put the lens cap on that. Or you can screw filters directly into the lens’s 52mm filter thread, then attach the screw in lens hood onto the filter; your choice. I personally used the lens hood, even though I was using my Chrosziel matte box, I found the Voigtlander’s lens hood fitted nicely into the Chrosziel’s rubber donut ring.



镜头质量会让人想起蔡司，镜头直径直径67mm。


You may or may not know that in the UK, the BBC have recently approved the Panasonic AF101 film-like HD camcorder for full HD television acquisition; with the caveat that it must be used with an external recorder capable of a minimum of 50Mbps and 4:2:2 colour space via the AF101’s HD/SDI output. Such devices include AJA’s Ki Pro Mini, but there are many cheaper variants out there also. The BBC also requires decent glass, and this Voigtlander is right up there and capable of giving you those tack sharp HD video images that the BBC demands for their HD programming. It’s remarkable to think that today you can buy the Panasonic AF101, this Voigtlander lens, and a 50Mbps recorder for under ￡5,500 inc vat; wow! Just 3 short years ago the same system to meet the BBC’s requirements for HD broadcast would have cost closer to ￡40,000.



他提到AF103被高清认证的那件事，然后叨叨了下AF103的参数，和外接记录器。这个大家其实都很熟悉了，我就不多说啦。


In use the Voigtlander is a very nice lens, it feels solid as a rock, its focusing barrel is smooth and precise, so too is the aperture ring, which has precise click stops in half stop increments from F0.95 through to F16 (16 clicks in total). The aperture ring and focusing barren are reversed from the norm i.e. the focusing barren is nearest the camera body, while the aperture ring is towards the front of the lens. These are the only two moving parts externally on the lens. Its layout is very neat with clear markings for feet and metres.



他强调了福伦达镜头的坚固性，说对焦很顺滑对焦很准确，光圈环也是。光圈环和对焦环是与基本i.e相反的，而对焦环在靠近机身的位置，光圈环在的镜头前面。



voigtlander 25mm nokton


Shooting with this lens on the AF101, it is an all-manual affair, one that I personally am in love with as I detest the use of most automatic functions on camcorders anyway. The AF101 has some amazing options for controlling focus and exposure. One such option are the little focus and exposure lines that appear horizontally along the bottom of the LCD screen, regardless of the lens, as you focus the ‘focus’ line on the LCD screen moves further to the right; the more in focus the shot, the further to the right the line moves. The line eventually reaches its maximum place on the right when the picture is most in focus. Exposure is based on a similar line display on the LCD, only this time there is a small vertical line, as the horizontal line moves to the left of this vertical line the exposure is going under, as it moves to the right, it is going over; get the horizontal line to stop where the vertical line is and your exposure is bang on. These features work to perfection with the Voigtlander lens, so to do the zebra and various vector and waveform monitor function of the AF101.



使用福伦达镜头拍摄用的是全手动。然后开始说AF103焦点曝光设置，然后说的是波形监视器怎么好用吧。


I’ve been shooting with the Panasonic AF101 with the Voigtlander 25mm MFT lens for some weeks now and to say I’m impressed is an understatement. The quality that the Voigtlander optics produces is truly amazing. As for the Bokeh, it is truly amazing. At F0.95 you can achieve the shallowest depth-of-field; it’s incredible and it yields some incredibly artistic results. The sheer depth-of-field control totally allows you to fix the attention of the viewer’s eye on any given part of the scene; independent feature filmmakers will love this lens. The depth-of-field advantages are also there for control in other areas also. At about F8 for example, I could focus on something approximately 30 feet away, and have virtually everything in focus from about 7 feet to infinity. This makes the Voigtlander a superb lens for landscape and documentary work. We don’t always need or want very shallow depth-of-field. This lens should be seen as a tool that will allow you to achieve shots in less than ideal lighting situations, as well as for creative bokeh purposes.



质量是福伦达光学生产的是真正了不起的。在F0.95可以实现最浅的景深，总能产生了一些令人难以置信的艺术效果。独立电影制片人应该喜欢这个功能的镜头。在光圈F8时，我可以对焦在30英尺远的东西，就是对焦清晰点可以在7英尺至无穷大。这使得福伦达为风光和纪录片方面干得出色。我们并不总是需要浅景深。这个镜头应该被看作是一种工具，能够使用它在光线较不理想的环境下，以及创造性的背景虚化的目的。



nigel with af101The Voigtlander lens is tack sharp at the point of focus, and beautifully smooth in all the other areas of the shot. At F0.95 (wide open) I rarely detected any CA (chromatic aberration) and fringing, and when I did, it was only slight, beating many broadcast 2/3rd zoom lenses I’ve seen costing over ￡10,000. Remember, any lens wide open will reveal any potential nasties that any given lens might have; wide open is not exactly the ‘sweet spot’ of any lens. Remember, it is virtually impossible to find a lens at any price that doesn’t have a tiny slither of CA and/or fringing present. Based on the video footage I shot, I would not have any problem shooting wide open with this lens all the time. Blue or purple fringing is simply not there 98% of the time (the 2% is on wide and only in certain instances) and I pushed this lens to it’s absolute limits filming white swans across a dark ripple-free river, tree branches and flowers against a clear blue sky and a windmill against the sky; none of which revealed any noticeable fringing. At mid aperture points of F4, F5.6 and F8, the lens performs flawlessly. F8 appears to be the lenses sweet spot; I’d almost go so far as using the word ‘stunning’ at F8.



福伦达镜头对焦点非常锐而周围的虚化又非常的平滑。在F0.95（光圈全开）我几乎没有发现任何CA（色差）和散色现象，击败许多广播2/3rd变焦镜头。任何镜头都不应该将光圈开到最大，最大光圈不会是任何镜头的最有效点。在光圈全开时，98％情况是完全不会出现紫边的，（即2％的范围，只有在某些情况下是）。用这个镜头，拍了白天鹅经过黄昏宁静的河流，树枝和花朵为背景；风车以蔚蓝的天空为背景，都没有发现任何明显的紫边。在F4中，5.6分和F8光圈中，镜头表现得完美无缺。在F4、F5.6分和F8情况下，镜头表现得完美无暇。F8镜似乎是最好的点，可以用“惊人”来形容。


Shooting outdoors in bright sunlight produces some very mild flare when shooting directly into the sun, with the sun in frame, but once the Chrosziel matte box was in place, this soon cleared up. Remember, this was an extreme test, it would be rare that anyone would need to shoot straight into the mid-day sun with the sun bang in the middle of the frame. Also, anyone who is serious about their video work would always use a matte box anyway, or at least a decent lens shade.



在太阳很大的时候拍摄户外场景，当太阳在画面里时都只是温和的光线……（请原谅这段我实在翻不清楚……）



vinten vision 5asThe colours produced by the Voigtlander are incredibly accurate and very punchy. Contrast is nicely balanced also. Adding up to a very natural and film-like picture that is very pleasing indeed. I love everything this lens stands for, it’s build quality is incredible and should last a lifetime, it’s optical performance is exemplary. If I had to find a fault, it would be that the lens is too small for my personal tastes, it is a little difficult getting your hand between the AF101’s body and the Chrosziel matte box to focus and adjust aperture. But this is a silly little point, and one that probably won’t bother anybody else. It doesn’t really bother me that much, I’m just used to working with much larger lenses, I’ll get used to this cute little gem of a lens regarding it’s small ergonomics.



由福伦达的颜色是非常准确，非常具有冲击力。对比度也很好。像是一个很自然的电影般的画面。总之他很喜欢这个镜头，如果我必须找一个缺点，那就是镜头对我我个人来说有些太小，你很难在镜头和AF103之间很难找到一个放手对焦和调节光圈的位置。The Voigtlander 25mm F0.95 MFT lens cost ￡695 plus vat (prices subject to change) and is available via Robert White Photographic, who also happen to be the UK’s sole importer of the lens; oh, and they are incredibly nice people to do business with! You can contact Robert White Photographic on 01202 723046, or visit their shop in down in sunny Poole, Dorset. See their website for full details at: www.robertwhite.co.uk



福伦达25mm的F0.95镜头只要695英镑（价格会有变动）。


原文链接：http://www.dvuser.co.uk/content.php?CID=274