Archived posting to the Leica Users Group, 2010/08/28

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Subject: [Leica] IMG: Eliminating Chroma
From: jhnichols at lighttube.net (Jim Nichols)
Date: Sat, 28 Aug 2010 19:15:45 -0500
References: <CEDFD8C110F74328A0904A10CB8CB1AD@jimnichols><99EA319C-874D-4FF5-95DA-61909DEB6ABC@mac.com> <AANLkTim+VreU9U0bOY0KhNdejrjUw+DdsXRxp=vz-=dA@mail.gmail.com>

Geoff,

Thanks for the link.  It is quite enlightening to a neophyte such as myself.

Jim Nichols
Tullahoma, TN USA
----- Original Message ----- 
From: "Geoff Hopkinson" <hopsternew at gmail.com>
To: "Leica Users Group" <lug at leica-users.org>
Sent: Saturday, August 28, 2010 5:48 PM
Subject: Re: [Leica] IMG: Eliminating Chroma


> http://toothwalker.org/optics/chromatic.html
>
> Cheers
> Geoff
> http://www.pbase.com/hoppyman
>
>
> On 29 August 2010 05:13, George Lottermoser <imagist3 at mac.com> wrote:
>
>> The aberrations we're discussing
>> generally occur along edges of high contrast;
>> as your original image had;
>> or twigs against bright sky, etc.
>>
>> Regards,
>> George Lottermoser
>> george at imagist.com
>> http://www.imagist.com
>> http://www.imagist.com/blog
>> http://www.linkedin.com/in/imagist
>>
>>
>>
>>
>>
>>  On Aug 28, 2010, at 1:03 PM, Jim Nichols wrote:
>>
>> > George,
>> >
>> > I decided to try the 35 Macro on the E-1, which causes me to change two
>> variables.  First, no flash is involved. Second, the E-1 uses a Kodak
>> sensor.  I see no signs of the chroma problem in this example, or others
>> that I examined.
>> >
>> > I now suspect that the fill flash, on the top of the camera, could
>> contribute to the top edge problem.  But it sure allows me to get insect
>> images that I cannot get without it. :~((
>> >
>> > http://gallery.leica-users.org/v/OldNick/Rose+of+Sharon.jpg.html
>> >
>> > Comments and critiques welcomed.
>> >
>> > Jim Nichols
>> > Tullahoma, TN USA
>> >
>> > _______________________________________________
>> > Leica Users Group.
>> > See http://leica-users.org/mailman/listinfo/lug for more information
>>
>>
>> _______________________________________________
>> Leica Users Group.
>> See http://leica-users.org/mailman/listinfo/lug for more information
>>
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>
> 




In reply to: Message from jhnichols at lighttube.net (Jim Nichols) ([Leica] IMG: Eliminating Chroma)
Message from imagist3 at mac.com (George Lottermoser) ([Leica] IMG: Eliminating Chroma)
Message from hopsternew at gmail.com (Geoff Hopkinson) ([Leica] IMG: Eliminating Chroma)