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G7 with Pentax PK mount 28mm Sigma

Started Aug 6, 2018 | Discussions thread
rambling robin
OP rambling robin Senior Member • Posts: 1,196
Re: G7 with Pentax PK mount 28mm Sigma

Mark9473 wrote:

Amazing how different those two images look. I'm more a fan of the pin sharp second one. Did you use a helicoid adapter to improve the close focus distance, or does the lens do this by itself?

Yes it is, sometimes this effect woks, sometimes it gets a bit too mushy - to which this has veered. The only changes are that the first is wide open with strong sunshine almost dead ahead and on the limit of focus. I have seen this soft flare with various older Sigmas with strong sunlight whether on the Pentax or the G7. The sharper  was probably f5.6 or f8 with less harsh light.  No other hardware inolved.

 rambling robin's gear list:rambling robin's gear list
Nikon Coolpix P7100 Fujifilm FinePix S3 Pro Fujifilm FinePix S5 Pro Nikon D100
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