[LargeFormat] Keep the list alive! - Off Topic - 6x6cm
Jim Hemenway
largeformat@f32.net
Sat May 8 00:47:28 2004
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
>