S T i L L: February 2012

Thursday, February 16, 2012

Sony STF 135mm f2.8[T4.5]

试镜机为：sony a900

Minolta auto tele rokkor-PF 135mm f2.8@ f2.8 (1/100sec)

Sony STF 135mm f2.8[T4.5] (1/40sec)

一支少人敢买来玩的镜头。

一支风头给自家sony出的ZA AF135mm f1.8盖过的去的镜头。

一支就算你有本事买的下手，你也要经的起只能用手动对焦，又比平常的135mm f2.8头暗多大概一级半光圈的速度来拍摄的镜头，再加上它的前部位对焦行程设计到又不是那么的好。。。。。只可说这镜头要操好它真的不是那么的简单。

我真佩服有勇气买下它，又真正能发挥到有好效果,出好相片的人。服！

在这里就让大家看看sony stf 135mm f2.8[t4.5] VS minolta auto tele rokkor-PF 135mm f2.8,好让大家对比一下( 大概rm3900 vs rm400)的分别吧。

Minolta auto tele rokkor-PF 135mm f2.8@ f2.8 (1/60 sec)
大多的数的135mm都有如图中背景出现月食／猫眼的现象。

Sony STF 135mm f2.8[T4.5] (1/25 sec)
这镜头虽然背景成相圈小了一点，但效果真的柔，又无月食现象，唯一不好的是色散表现就差了点儿。

Minolta auto tele rokkor-PF 135mm f2.8@ f2.8(1/80 sec）iso500

Sony STF 135mm f2.8[T4.5](1/30 sec) iso500
1/30sec对长焦头来说，不用脚架都不行，看看上面那张，1/80sec如果手握加上机开防震的话，相信还有机会,所以这镜头在光线不够之下使用真的非常吃力，除非你不介意提高iso来拍摄。

接下来看看边角失光部位。。。。

Minolta auto tele rokkor-PF 135mm f2.8@ f2.8(1/80 sec)

Sony STF 135mm f2.8[T4.5](1/30 sec)
这镜头的边角失光部位可说是一级棒，以它这样的表现，相信把这镜改在比FF更大的感光体都还会有多余的成像出现。

把上面两张中心crop了图，放大看看解像力。。。

Minolta auto tele rokkor-PF 135mm f2.8@ f2.8

Sony STF 135mm f2.8[T4.5]

对比了一下，发觉到STF的解像力绝对是牛！这根本是135mm f2才有的解像力呀。。。。。

Minolta auto tele rokkor-PF 135mm f2.8@ f2.8(1/100 sec)

Sony STF 135mm f2.8[T4.5](1/30 sec)

但正式来讲，不只解像力牛，景深方面也比正常的f2.8镜头多一点。以上两张可拿张大图来对比一下，看看火车头部位到第二节的景深就可看的出来。

大图：
1)Minolta auto tele rokkor-PF 135mm f2.8@ f2.8
http://www.flickr.com/photos/9154794@N07/6882118623/sizes/o/in/photostream/

2)Sony STF 135mm f2.8[T4.5]
http://www.flickr.com/photos/9154794@N07/6882090783/sizes/o/in/photostream/

到看看bokeh。。。。

Sony STF 135mm f2.8[T4.5](1/15 sec)

Sony STF 135mm f2.8[T4.5]@ [T6.7](对焦行程为1.5m)

Sony STF 135mm f2.8[T4.5] @ [T5.6] (对焦行程为1.5m)
在[T5.6]下，它的光圈就不是全圆型，有点失望。。。。

Sony STF 135mm f2.8[T4.5](对焦行程为1.5m)

Minolta auto tele rokkor-PF 135mm f2.8@ f2.8（对焦行程为1.5m）（这也是rokkor镜头的最近对焦距离）
同样的上面的行程都为1.5m，但rokkor的月食口径会比STF的大，也因为这样STF的月食口径较小才会有多一点的景深。

Sony STF 135mm f2.8[T4.5] @ [T6.7](对焦行程为0.87m)
有最近对焦距离为0.87m的STF，拿来对比上面的rokkor头的话，可看到在[T6.7]之下，口径的表现还是大过rokkor头有三分一，这也是这镜头的成功之处，越近越出色的bokeh。

Sony STF 135mm f2.8[T4.5] @ [T5.6](对焦行程为0.87m)
失望的圆型。

Sony STF 135mm f2.8[T4.5](对焦行程为0.87m)

再来几张是对比一下两者的同样的对焦行程。。。我发觉这镜对焦行程越近越，就越能特出它的背景柔度。

Minolta auto tele rokkor-PF 135mm f2.8@ f2.8 (1/80 sec) (对焦行程为3.5m)

Sony STF 135mm f2.8[T4.5] (1/30 sec) (对焦行程为3.5m)

Minolta auto tele rokkor-PF 135mm f2.8@ f2.8 (1/80 sec) (对焦行程为2.4m)

Sony STF 135mm f2.8[T4.5] (1/30 sec) (对焦行程为2.4m)

Minolta auto tele rokkor-PF 135mm f2.8@ f2.8 (1/80 sec) (对焦行程为1.7m)

Sony STF 135mm f2.8[T4.5] (1/30 sec) (对焦行程为1.7m)

最后是把上面两张crop放大，看看STF的暗部表现。。。。。。

Minolta auto tele rokkor-PF 135mm f2.8@ f2.8

Tuesday, February 14, 2012

Legendary lens that forgotten

From what I was learn in Architecture school. There was an argument about timeless design and to be define without any reference to the pass and history. It reminds me the greatest Minolta was sadly purchased by Sony which really market is a bitch by brainwashed consumer.

The timeless design refer to the design of the legendary lens such as 35mm f1.4 G, 85mm f1.4 G, 70-210 f4 beercan and etc... which the only few lenses carry out with new version from Minolta to Sony.

Those existed shadow of Minolta in Sony will be those first batch of DSLR territory from Sony. There will be the 16mm f2.8 Fish eye, 20mm f2.8, 35mm f1.4 G, 50mm f1.4, 135mm STF, 70-200 2.8 G and last the only AF reflex 500mm f8.

It's been five years since the first sony DSLR A100 first announced to the world. Many changes have been made but not well development. Thus ironically the market still enlarge.... maybe this really like create to satisfy to all type of consumers.

One of the legendary lens that made by sony and the most being forgotten is the 35mm f1.4 G

With unique floating element and the G quality which create the most creamy bokeh and portraiture softness that impress and poison me to hunt for this lens.

The originate batch together with the first sony DSLR - a100.

The low profile G

The close distance shots of Pentax K5, the impressive floating element create the creamy bokeh and more closer shots.

The size to compare the 50mm f1.4 and minolta 28-85. I would say light and small which i alway prefer to carry around.

Test shots for sharpness and DOF bokeh.. awesome 3D effect to highlight the focus subject with creamy blurred background.

easier for shots with background composition even in APS-C size.

easier to highlight the subject with more background for composition.

inherit the minolta color and the proper softness.

the sharpenss still there....

not so hightlighted but a slight sharpness on the subject.

quite perfect for portrait shots with softness without touch up

highlighted object to have some mystery shots....

test the night performance with large open aperture

The DOF bokeh with sharp object.

The night with stars... the stars can be view more with large aperture.

large aperture to allow more lights to capture night scene.

I would say one of the best lense for Portrait in terms of the natural softness maintain with detail, but still a handy lens for artistic composition and best for portrait.