Ted Harris wrote " “Normal” lenses, those designed for optimal performance at ranges of infinity to 1:10 or 1:5 also work fine as the reproduction ratio gets larger, as it approaches 1:1. Where the performance of these lenses begins to fall off is at and after you hit the actual 1:1 point."
Ted, the 50/1.4 and 105/2.5 Nikkors I used to have think you're badly mistaken. Both were terrible off their focusing mounts. The 105 was so awful that it couldn't be focused wide open at 1:1. It really depends on the lens. I know they're not LF lenses.
Cheers,
Dan
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