[LargeFormat] Keep the list alive! - Off Topic - 6x6cm

[Jim Hemenway]

Hi Brock:

Thanks for the idea... I still think that it's the lens.

Jim - http://www.hemenway.com



Brock Nanson wrote:

> Jim,
> 
> I can barely see what you're referring to in the lighthouse blow-ups. 
> However, my guess is it's caused by the scanner.  You're getting in 
> pretty darned close, so you could be getting a similar effect to what 
> you see when you put your nose on your 32" television.  The RGB sensors 
> don't line up perfectly in a scanner, so sometimes detail gets 
> 'adjusted' to suit the way the scanner sees things.
> 
> Could be wrong, just an idea.  As for why you see it in one only?  No 
> idea!  Unless it is the lens...
> 
> Brock
> 
> 
> Jim Hemenway wrote:
> 
>> Hi Folks:
>>
>> Some of you folks know a lot about optics, so I'm wondering if anyone 
>> can tell me if chromatic aberration is the name for the green and red 
>> stripes on the sides of the lighthouse in the first picture in the set 
>> below.  Look for the blow-up under the Boston Harbor photo on the left 
>> side of the pair.
>>
>> If it is chromatic aberration, why does it show up one one fisheye 
>> lens and not the other?  Is there a missing element?
>>
>> These are some side-by-side fisheye photos taken with the Arsat 30mm 
>> on a Kiev 60, and the Zeiss F-Distagon 30mm on a Rollei 6008i.
>>
>> When you click on any of them you'll be presented with large photos. 
>> If you press your right mouse button, (in Netscape 7.1) and choose 
>> view image, the photo(s) will be reduced in size to fit your screen. I 
>> think that something similar is available in IE.
>>
>> Astia 100
>>
>> Most at f8 - f16
>>
>> No sharpening
>>
>> No PS work except for spotting.
>>
>> http://www.hemenway.com/ArsatDistagon
>>
>> Thanks,
>>
>> Jim Hemenway 
>