[Leica] First IR photos with M8

[hlritter at bex.net (Howard Ritter)]

Thanks for the tip, George, especially the reminder to test at distances 
other than infinity.

?howard


> On Nov 16, 2015, at 11:08 PM, George Lottermoser <george.imagist at 
> icloud.com> wrote:
> 
> Digital allows us to check things like IR focus quite easily.
> 
> When I decided to dedicate the M8 + 40 mm Summicron to IR Photography.
> I put the rig on a tripod;
> focused with the range finder on ROCKS that could not move;
> shifted the focus distance to each aperture to the right (up to 5.6).
> 
> I did this for varying distances from around 3 feet out to infinity.
> 
> When I looked at the images on the computer
> it became very clear that shifting the focus to the f:4 mark on the 40 mm 
> Summicron 
> provide maximum sharpness at the viable working apertures, from f:2 
> through f:8.
> Results have proven very consistent.
> 
> Variances can generally be attributed to various combinations of camera 
> and/or subject movement.
> 
> I'll be ordering a 092 soon;
> and I'll run a similar group of test photographs with the new filter.
> 
> a note off the iPad, George
> 
> On Nov 16, 2015, at 8:45 PM, Howard Ritter <hlritter at bex.net> wrote:
> 
>> Any thoughts?
> 
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