Unusual blurring / bokeh?

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Bman70 New Member • Posts: 11
Unusual blurring / bokeh?
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I was wondering if this is normal blurring for a zoom lens (Sony 100-400GM in this case). Having never used a longer telephoto before, it looks strange to me. I'm referring to the foreground large tree trunk, and the foreground branch in the bottom left corner. There seems to be a doubling effect, instead of soft blur as I would expect. It's more like a hard-edged phantom image or halo.

 Bman70's gear list:Bman70's gear list
Sony a6300 Sony E 50mm F1.8 OSS Sigma 30mm F2.8 EX DN Sony E PZ 18-105mm F4 G OSS Sony FE 70-300mm F4.5-5.6 G OSS +2 more
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