I got an early bird copy of Luminar 4. I really like the new AI features like sky replacement. The biggest issue I have with Luminar 4 is that the library is too slow for culling large amounts of photos. I have used instead the free application XnView mp for culling my photos. I would say xnview is a lot faster than Luminar 4. I also tried to do batch processing on many photos at the same time but it was too slow. Then I used Lightroom 5 and it was really fast and efficient. Luminar 4 has many interesting features but too slow in some areas to be that useful.
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