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Telear-N 200mm f/3.5 has arrived
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PostPosted: Fri May 30, 2008 4:33 pm    Post subject: Reply with quote
ChrisLilley wrote:
So, (just checking) ТЕЛЕАР (Telear) is the model, and the manufacturer is Arsenal?


I don't know, I need to see the logo on the lens.
You can check from this page:
http://cameras.alfredklomp.com/logos/

Quote:
And in what years was this lens made? Are the first two digits of the serial number, the year?


Yes.


PostPosted: Fri May 30, 2008 4:35 pm    Post subject: Reply with quote
poilu wrote:
congrats Chris
the 3.5 sample is impressive at full size Shocked


Thanks, Poilu. In particular the ivy on the right hints at good sharpness towards the border (of a crop sensor)


PostPosted: Fri May 30, 2008 4:38 pm    Post subject: Reply with quote
Orio wrote:

I don't know, I need to see the logo on the lens.
You can check from this page:
http://cameras.alfredklomp.com/logos/


Thanks for the link. Its a Zavod Arsenal (and made in 1996).


PostPosted: Sat May 31, 2008 3:34 pm    Post subject: Reply with quote
I think the RF from those antennas ( UHF-VHF) effected your white balance Laughing Laughing


PostPosted: Sat May 31, 2008 5:11 pm    Post subject: Reply with quote
Did some comparisons this afternoon with my Zoom-Nikkor 80-200 f/4.5 Ai. (I have fixed the slack focus/zoom ring, but now it seems reluctant to go al the way to 200mm).

Initial thoughts - the Telear seesm a bit longer than 200mm, has a pronounced yellow-green cast and I am still playing with how best to correct that in postprocessing. The Telear has nice detail, the Nikkor seems to have a touch more resolution bu the Telear seems to have a more 3D look somehow, as if the Nikkor is a bit flat.

Here at f/5.6 1/1000s, first the Nikkor (picture links to full size image)


Now the Telear, as shot


Finally the same shot as above, but with 'auto white balance' in Nikon Capture NX. This seemed to give better (but still not wholly satisfactory) results than adjusting individual color channels.



Shots were using a tripod and remote shutter release, and all taken within a few minutes of each other.


PostPosted: Sat May 31, 2008 5:18 pm    Post subject: Reply with quote
That is a pretty serious color cast. Shocked


PostPosted: Sat May 31, 2008 5:48 pm    Post subject: Reply with quote
I know that some other lenses get a colour cast (Takumars?) which is corrected by strong sunlight. Might that work with this lens?


PostPosted: Sat May 31, 2008 5:55 pm    Post subject: Reply with quote
the telear have move CA and less resolution on the border than the Nikon
on center telear is maybe better, but the difference of focal may play
the only advantage of telear vs the zoom seems to be 3/4 stop Rolling Eyes


PostPosted: Sat May 31, 2008 6:04 pm    Post subject: Reply with quote
maddog10 wrote:
That is a pretty serious color cast. Shocked

This really surprises me. First I do not remember that from my Telear and second did you shoot with AWB setting? Then the DSLR should not allow such a colour cast. Shocked Question


PostPosted: Sat May 31, 2008 8:40 pm    Post subject: Reply with quote
LucisPictor wrote:
maddog10 wrote:
That is a pretty serious color cast. Shocked

This really surprises me. First I do not remember that from my Telear and second did you shoot with AWB setting? Then the DSLR should not allow such a colour cast. Shocked Question


They were all shot with 'sunny' awb. I should probably get one of those semi-transparent white lenscaps and do the custom white balance thing.


PostPosted: Sun Jun 01, 2008 5:13 am    Post subject: Reply with quote
or use the "white point" setting in the WB software? That really is a serious cast. I had a similar problem with my Helios 40 and a couple of weeks of UV seems to have largely fixed it.


patrickh


PostPosted: Sun Jun 01, 2008 11:49 am    Post subject: Reply with quote
To clarify - I typically don't use AWB because I don't like the assumptions it makes, and its unpredictable. (This is well explained here).

However, to date my lenses have been very neutral. The Nikkors are slightly cool and the Ultron is just slightly warm, but nothing major. This means I can set the colour temperature in post.

I just took a test shot with custom (measured) white balance, measured from a sheet of white premium inkjet paper in direct sunlight (f/5.6 1/800):



The weather is similar to yesterday (a bit brighter) and its a similar time of day so the photos should be comparable.


PostPosted: Sun Jun 01, 2008 12:56 pm    Post subject: Reply with quote
ChrisLilley wrote:
LucisPictor wrote:
maddog10 wrote:
That is a pretty serious color cast. Shocked

This really surprises me. First I do not remember that from my Telear and second did you shoot with AWB setting? Then the DSLR should not allow such a colour cast. Shocked Question


They were all shot with 'sunny' awb. I should probably get one of those semi-transparent white lenscaps and do the custom white balance thing.


Ah, OK, I see. In this case such a strong colour cast is more realistic. Some lenses do produce very warm pictures. Shooting with the same WB setting helps to characterize the lenses' characters. That makes sense.
Measuring the right WB of course helps, but I also have very good experiences with the AWB of my Canon cams, if I want a neutral effect. It mostly avoids such a strong cast. So, if you aim for a deliberate colour effect, it's no good. Wink


PostPosted: Sun Jun 01, 2008 12:59 pm    Post subject: Reply with quote
ChrisLilley wrote:
I just took a test shot with custom (measured) white balance, measured from a sheet of white premium inkjet paper in direct sunlight (f/5.6 1/800):
...
The weather is similar to yesterday (a bit brighter) and its a similar time of day so the photos should be comparable.

This one is perfect IMHO and on my laptop display!


PostPosted: Sun Jun 01, 2008 5:18 pm    Post subject: Reply with quote
Thanks ChrisLilley,anticipation are more beautiful picture of this lens
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