There's lots of factors in a lens besides focal length range, though, no? Aperture, image quality, noise, focus speed and ability to track, manufacturing cost, profit margin, and even environmental concerns. (EG, radioactive elements were eliminated from lenses, then I believe lead, and that may have continued in optics or in other parts of the lens??) Could also be internal statistics for durability have gone up, etc. Just wondering aloud, maybe the 15-45 was no sharper than a smart phone so no-one would be advised to buy it? I don't know, I've never even seen either lens much less handled or shot them.I still don't get why Canon made the RF-S 18-45 instead of just making the same EF-M 15-45 in RF mount. Now they have possibly the worst kit lens from all manufacturers and no option to upgrade it.
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