[Leica] Leica 50mm Apo-Summicron-M & Topaz's AI Gigapixel

[Ken Carney]

Is this Topaz AI Sharpen?  I've been using it and I'm not seeing the 
artifacts in the red channel.

Ken

On 5/16/2019 10:18 AM, Paul Roark via LUG wrote:
> Although I think the price is a bit over the top, I decided to buy one of
> these 50mm lenses.  The first effort, via Amazon, was defective and
> returned.  (It was optically de-centered; one side of the image was soft.)
> The second effort, via Adorama, is simply the optically best lens I've ever
> owned or tested.  The published MTF curves appear to be accurate.  The only
> performance weakness I have noticed is that the bokeh is less than totally
> smooth.  There seems to be a bit of a "double image" look to it.  Because I
> tend to want everything sharp, this is not much of a concern to me.
>
> As a landscape shooter, this 50 along with the WATE, used on a Sony a7rii,
> will be my 2-lens mobile, hiking kit.
>
> To fill the gap and to extend the reach, part of the formula is the use of
> Topaz's AI Gigapixel.  If you have not experimented with this software, I'd
> urge you to take a look at it.  (I don't recommend Topaz's "Sharpening"
> software.  It leaves unacceptable artifacts in blue skies in the red
> channel that make using that channel for black and white unacceptable.)
> While there is no total substitute for a good prime at the focal length you
> need, this Topaz software is a reasonable alternative for modest
> enlargement.
>
> Paul
> www.PaulRoark.com
>
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