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Is RF 28-70 F2.0 suitable for fast moving objects? (AF speed)

Started Aug 3, 2021 | Discussions thread
thunder storm Forum Pro • Posts: 10,139
Re: Is RF 28-70 F2.0 suitable for fast moving objects? (AF speed)
1

bernie r wrote:

1Dx4me wrote:

i am gonna hold on to all of my :EF" "L" lenses when i move to R3 or R! when the time comes. RF lenses are expensive and offer no benefit compared to EF lenses. so i am ready for R#/R1 cameras in your case, i would definitely consider a canon 24-70 f2.8 II, it is a wonderful lens, check it out.

'No benefit' is a stretch.

Although true, I find the benefits for the price difference pretty bad value for money in some cases.

Comparing the RF 24-70mm f/2.8 to the EF 24-70mm f/2.8 mkII  i've found the following differences:

1. The RF lens has smoother bokeh

2. The RF lens has a bit better stabilization, as it isn't leaning on IBIS only. Yeah, there are two bodies without IBIS, but the R is more of a landscape camera being better served with the RF 24-105 f/4.0 L, and the RP and the RF 24-70 f/2.8 IS USM - although fully compatible - aren't really in the same price segment.

3. The RF lens could have a little bit better contrast and/or center sharpness, but it doesn't have benefit's only. The EF lens is a bit better at the wide end for instance.

I've tested my EF lens on the R5 for AF tracking speed, and my use cases aren't enough of a stress test to find any flaws, even when trying to stress the lens enough. Although the RF lens could be better, I'm wondering what improvements where needed.

1. is a biggie

2. is only a marginal difference in my opinion

3. is only a marginal difference in my opinion

My used but mint EF mkII was 1000 euro. A new RF lens is 2500 euro. In my opinion it's better value for money to get the EF lens and use the other 1500 euro to add one or two good primes. 1500 euro is what I've payed for the 40mm f/1.4 Art plus RF 85mm f/2.0 IS stm.  Because of these lenses my 24-70mm is primarily my best 24mm.....  It's also - secondary - my standard zoom, but hey, zooms will always be just just zooms, no matter how expensive they are.

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I love 50mm (equivalence)

 thunder storm's gear list:thunder storm's gear list
Canon EOS 6D Canon EOS M6 II Canon EOS R5 Sony a7 IV Canon EF-S 15-85mm f/3.5-5.6 IS USM +24 more
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