kymarto wrote:
This lens is optically identical to the EF version, meaning that the advantages of the shorter flange of the R mount are not being utilized. I do not have this lens, but I have done some research on it and it is clear that in no way is this lens optically comparable to shorter zooms or primes. Sharpness leaves something to be desired, especially in the corners at the wide and tele ends. In addition lateral chromatic aberration is quite strong at the wide end, and reappears at the tele end. Coma is also quite evident. The build quality of the lens is consumer grade, and not weather sealed. I would not take it out for rugged use.
That being said, for consumer use, it will provide decent images overall. The deficiencies will not really be apparent in small prints and on the web.
This lens is optically identical to the EF version... (
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There has never been an "EF" or "EF-S" 18-150mm lens.
There have been three EF-S 18-135mm lenses that are completely different designs.
The RF-S 18-150mm actually is an adaptation of the
EF-M 18-150mm lens. They use the same optical formula (which is different from the EF-S 18-135mm USM or STM's). Since both are mirrorless systems, there is only 2mm difference in the flange focal distance of the R-series and M-series cameras. The EF-M mount flange focal distance is 18mm while the newer RF-mount's is 20mm. So it is a rather simple and very sensible adaptation that fully utilizes the short flange focal distance of the mirrorless camera.
I'm hoping that Canon will adapt more of the EF-M lenses to the RF-S. While very few lenses were ever made for the M-series cameras, there are some excellent lenses in that older system that would be ideal on an R10 or R7. In particular the EF-M 11-22mm, EF-M 22mm f/2, EF-M 28mm f/3.5 Macro and EF-M 32mm f/1.4 all would be great on the new cameras. I was surprised that Canon chose to make a new RF-S 18-45mm instead of simply adapting the compact EF-M 15-45mm.
It is too bad that Canon has shut down 3rd party RF-mount lens development, because there are some superb 3rd party lenses for the M-series cameras (as well as for Sony, Nikon, Fuji and Oly/Panasonic). Sigma makes truly excellent 16mm f/1.4, 30mm f/1.4 and 56mm f/1.4. Viltrox makes very good
and affordable 23mm f/1.4, 33mm f/1.4 and 56mm f/1.4.
Yes, the RF 18-150mm is a "consumer grade" lens. Versatile, moderately compact, light weight. Very good for that type of lens. It's ertainly not an "L" in build or image quality. But it's also not priced like an L-series.
gener202002 wrote:
hmmm, it looks like the r7, body only, is available at best buy now, but not B&H photo. I will have to do some more checking on this.
The R7 is in stock now at B&H, both "body only" or with the RF-S 18-150mm. With the kit, the lens costs $100 less than if it were bought separately.