NEX Images Thread
/forum/topic/969329/4

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douglasf13
Registered: Apr 09, 2008
Total Posts: 6110
Country: United States

Ah, yes, I forgot that you could cut off the some of the plastic shields to mount the 21mm.



akul
Registered: May 30, 2010
Total Posts: 1622
Country: United States

Philber - That is quite an amazing detail !! Very powerful shot.

Akul



philber
Registered: May 21, 2008
Total Posts: 7652
Country: France

Thanks, Akul!



slungu
Registered: Jan 25, 2005
Total Posts: 890
Country: Germany

Very nice pictures in this thread - give an idea what is possible with the little NEX cameras.
I wanted to ask how you process the files. Coming from that ancient 1Ds I am surprised to see that raw files processed with the Sony software do not seem that sharp, at least not the ones from the CV 15/4.5 and ZM35/2. Portraits shot with the CV 90/3.5 look better. Still I was wondering if you sharped the files in post, since I never sharpened the 1Ds files I got from the 28 and 100 2.0 Zeisses. Is this something that has to be done with the high density sensors of today ?
Another thing I have to practice more is focusing the wides on infinity - does not seem to be that easy, I only got one picture right with the 15mm so far.

Regards, Stefan



douglasf13
Registered: Apr 09, 2008
Total Posts: 6110
Country: United States

If sharpness is your goal, I would avoid Sony IDC. If you don't want to spend money on the popular converters, try the free Raw Therapee or Raw Photo Processor, both of which give outstanding output.



philber
Registered: May 21, 2008
Total Posts: 7652
Country: France

I use Lightroom V. 3.3. I tried the Sony software and found it disappointing.



sebboh
Registered: Nov 02, 2009
Total Posts: 10764
Country: United States

i also use lightroom, but i apply sharpening for downsizing/printing with photoshop.

a shot with the vivitar 28/2 close focus lens.






philber
Registered: May 21, 2008
Total Posts: 7652
Country: France

Delightful shot, sebboh!



theprophe
Registered: Feb 24, 2008
Total Posts: 4
Country: Czech Republic

A member on getdpi, claims with the newest kipon adapter, that the contax g biogon 21mm fits without trimming, i will be getting mine hopefully next week to try



Lotusm50
Registered: Sep 26, 2005
Total Posts: 6228
Country: United States

theprophe wrote:
A member on getdpi, claims with the newest kipon adapter, that the contax g biogon 21mm fits without trimming, i will be getting mine hopefully next week to try



Unless that new Kipon adapter moves the lens back away from camera body (and affecting infinity focus), it's not going to work. Here is a picture of my G 21mm Biogon on a NEX adapter. You can clearly see that the plastic shields extend past the the end of the adapter.



I tried to fit it to my NEX-5. These shields hit the built up flat areas to the top and bottom of the sensor (I know this becuase they left marks there as I tried to mount the lens). For it to fit, you clearly need to trim these shields. The adapter, if the proper lens registration distance is used, has nothing to do with with this. The adapter is not prohibiting the use of the lens.



Herb1911
Registered: Jun 26, 2010
Total Posts: 377
Country: Netherlands

Nex 5 with Zeiss Biogon 25mm.



lepp
Registered: Jul 06, 2008
Total Posts: 97
Country: Estonia

Herb1911, great shot & B/W conversion there!



theprophe
Registered: Feb 24, 2008
Total Posts: 4
Country: Czech Republic

thanks for the pic, and explanation, thats too bad, i'm going to pm him and see why he said that

Lotusm50 wrote:
theprophe wrote:
A member on getdpi, claims with the newest kipon adapter, that the contax g biogon 21mm fits without trimming, i will be getting mine hopefully next week to try



Unless that new Kipon adapter moves the lens back away from camera body (and affecting infinity focus), it's not going to work. Here is a picture of my G 21mm Biogon on a NEX adapter. You can clearly see that the plastic shields extend past the the end of the adapter.



I tried to fit it to my NEX-5. These shields hit the built up flat areas to the top and bottom of the sensor (I know this becuase they left marks there as I tried to mount the lens). For it to fit, you clearly need to trim these shields. The adapter, if the proper lens registration distance is used, has nothing to do with with this. The adapter is not prohibiting the use of the lens.




sebboh
Registered: Nov 02, 2009
Total Posts: 10764
Country: United States

Lotusm50 wrote:
Unless that new Kipon adapter moves the lens back away from camera body (and affecting infinity focus), it's not going to work. Here is a picture of my G 21mm Biogon on a NEX adapter. You can clearly see that the plastic shields extend past the the end of the adapter.



I tried to fit it to my NEX-5. These shields hit the built up flat areas to the top and bottom of the sensor (I know this becuase they left marks there as I tried to mount the lens). For it to fit, you clearly need to trim these shields. The adapter, if the proper lens registration distance is used, has nothing to do with with this. The adapter is not prohibiting the use of the lens.

do those fins not just unscrew?


akul
Registered: May 30, 2010
Total Posts: 1622
Country: United States

Sebboh - great macro shot. Initially I was not sure about the bokeh character, but it grew on me.

Herb1911- spectacular shot! BW works perfect.



Lotusm50
Registered: Sep 26, 2005
Total Posts: 6228
Country: United States

sebboh wrote:
do those fins not just unscrew?



You have to open up the whole mount. I have not done this but it looks like after you take the lens mount off, there are 4 screws holding the shield which appear to be part of the structure that also holds the electrical contacts. I'd have to take it apart to be sure, and I'm really not interested in doing that. I'd trim the shield to use the lens, but only if I knew that I could easily replace them with a new shield to restore the lens' integrity.



KOJI
Registered: Jan 07, 2006
Total Posts: 93
Country: Canada

Why do you guys have the problem to mount G-Biogon 21/2.8?

I have no problem with my G->E adapter (Kipon-look-a-like) and reach infinity too.
Because of rear protector of the lens I have to mount the adapter to NEX5 FIRST,
then mount the lens to the camera+adapter SECOND. My adapter is > http://www.pbase.com/kkawakami/image/127863088
Although the corners have slight colour shifting, but fixable by CornerFix program as you know.

Actually we are very lucky G-lenses have a kind of breach-mount which does not
require to rotate the lenses to mount them.



Lotusm50
Registered: Sep 26, 2005
Total Posts: 6228
Country: United States

KOJI wrote:
I have no problem with my G->E adapter (Kipon-look-a-like) and reach infinity too.
Because of rear protector of the lens I have to mount the adapter to NEX5 FIRST,
then mount the lens to the camera+adapter SECOND. My adapter is > http://www.pbase.com/kkawakami/image/127863088



I have a similar adapter (except mine is a near-matching titanium color instead of black) so I tried this technique. Lo and behold, it worked. Those shields have to be right up to and pressing against the sensor surround.

One thing I noticed is that it focuses WAY past infinity, yet ALSO focuses VERY close -- to about 0.3 meters from the sensor plane. The spec for the lens on the Contax G is 0.5 meter to infinity, so we seem to be getting a lot more range out of the lens for some reason. Koji, are you seeing the same thing?



KOJI
Registered: Jan 07, 2006
Total Posts: 93
Country: Canada

Yes, of course. If you mount the lens (any G-lenses) on G1/2, your lens sits on "the resting position",
which is closer to film position than "infinity" position, to which the camera moves the lens
when you power on the camera. (except G-Hollogon 16mm)
So I knew what you observed will happen when you mount G-lens to NEX or micro4/3 camera.

I have an M-mounted G-Biogon 21mm too, which focuses to 0.3m as you have seen. So no surprise to me.



tach18k
Registered: Feb 21, 2006
Total Posts: 936
Country: United States

My new NEX-5, with the 16mm and 100% crop on this flower. Cropped from jpg no pp.









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