I scan with an ES-2. It crops the image only by the tiniest amount. It’s really not a problem in practice. There are a lot of good reviews on it out there, the only thing I will add is that it excels with uncut film rolls. I just put the first six frames in, shoot them, then unclamp the film holder and move it down the filmstrip by six more frames. I can shoot a roll of 36 in about 10 minutes. I use a tripod to keep the film up off the floor while it’s dangling out of either side of the ES-2.
Overall I find it much faster than using a light table and less fiddly, especially since it’s an autofocus lens (60mm af-s macro). With bright light the AF is fast and snappy. I do use mirror lockup and a 1s exposure delay just to be safe for any vibrations.
I used to do both drum scanner and a flatbed as well, and I find this the best mothod I’ve ever used. 36mp scans of 35mm film are surprisingly close to 24mp drum scans. I think if I got a D850 I could get to parity with drum.