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I didn't feel I could comment while I had ES for sale but now that they have sold I'll say that ES are very close to TV and the equal of TV in some focal lengths, with differences mainly seen at the edge of field.
The 40mm 68 degree isn't quite as well corrected in the outer field as the 41 Pan and the 14mm 82 degree has mild field curvature seen in the outer field (not nearly as intrusive as curvature in an XW14) but many others I've tried leave nothing to be desired for their respective designs.
I've moved to Delos and XW in the short and medium focal lengths mainly for their long eye relief though they are a small step up from ES. I also have a Leica ASPH zoom which seems equal to Delos/XW so even they may get thinned a little in future.
I've got 3 long focal length ES's that I'll be keeping since they have long eye relief and are equal to TV on axis. I've directly compared the ES30/Nagler 31 and ES40/Pan 41 and there was zero difference on axis.
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