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EF vs RF lenses - a few things to consider

Started 1 month ago | Discussions thread
Basil Fawlty
OP Basil Fawlty Regular Member • Posts: 237
Re: EF vs RF lenses - a few things to consider

José B wrote:

I just got the R6MKII. So far the EF to RF transition via adapter is very seamless. I know RF lenses are lighter, smaller, faster to AF and have terrific IQ but I really see no compelling reason at this time to start dumping my excellent EF lenses to RF. I intend to keep all of my EF lenses as I am with the 5Ds.

The only RF lens I would be interested in the future is if Canon would have an RF version of the 200/2.8 L II. I hope it comes out in the near future albeit I think there might be a 50% price hike from the original new price of the EF version. Having said that I have no qualms of getting a used EF version.

I currently have a Sigma 150-600mm Contemporary lens (EF mount ).  I recently took it to Bosque Del Apache, using Camera AF and Lens settings suggested by Duade Paton.  I was extremely happy with that lens on my R5.  The AF speed and accuracy was great.  I won't sit here and tell you that it is as fast as an RF 100-500, but I can tell you it was fast enough that I was quite happy with it.  The IQ and sharpness was also great, even at 600mm.  So, while I'm sure the RF 100-500 is a fabulous lens (lighter for sure), I am not in a hurry to "upgrade" because:

1. I already own the Sigma

2. The IQ and AF performance is quite good

3. My Sigma has 100mm more reach

4. My sigma, while being about 1 pound heavier, is still quite manageable hand-held

5. My sigma is a half stop brighter on the long end (6.3 vs 7.1)

If I wasn't happy with the performance of my current combo, I might consider the RF, but I am so I won't (at least not at this time).

 Basil Fawlty's gear list:Basil Fawlty's gear list
Panasonic LX100 Canon EOS 5D Mark IV Canon EOS R5 Canon EF 50mm F1.4 USM Canon EF 135mm F2L USM +8 more
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