jcollins
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(edited - tangential)
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Phil Thatch comes to mind and has a couple videos out with side by side comparisons. In my neck of the woods, an f/9 lens is impractical for BIF as there simply isn’t enough light on most days.Let's see those videos you mentioned?
Below: Phil Thach (note spelling of his name) and RF 200–800 (The photo below is not a link to YouTube.)
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I think 800 at f9 is still pretty good. The 600 at f8 less so, but there's always give and take with budget lenses.I consider it an important new mirrorless product.
A DSLR rarely auto focuses at f9.
For those on a limited budget or perhaps getting a little old to carry a range of lenses it opens the door to many wildlife photographers having financial access to a longer range of focal length lenses than they previously had
+1 to that. It wasn't that long ago that Canon purposely imposed a major price barrier if you wanted to go anywhere above 400 f/5.6, which made it tough for amateurs/beginners (like myself at the time!) to really get into wildlife/birding. On most of their DSLRs at the time aside from the 1-series $6000+ cameras, if you tried putting a 1.4 extender on those 400 5.6 lenses you'd lose most, if not all, AF capabilities. Your next option after the 400 5.6 and 100-400 meant splurging for the 400 f/4 DO II (another $7000) before you were able to break through that 400 barrier using a TC, and using the 2x meant being at f/8 again. Hitting 800mm meant jumping up to the 500 and 600 f/4, and we all know how much those monsters cost, so being a Canon shooter and able to reach 800mm at a reasonable aperture for under $2000, is awesome.I consider it an important new mirrorless product.
A DSLR rarely auto focuses at f9.
For those on a limited budget or perhaps getting a little old to carry a range of lenses it opens the door to many wildlife photographers having financial access to a longer range of focal length lenses than they previously had
I can only speak about Sony but the GM label is more than just sharpness. It’s weather sealing, coatings, focus motors, features such as manual focus override, weight, bokeh and a bunch more sprinkled in depending on the specific lens. G lenses are typically very good for their price point and for many is not a compromise for IQ.What is unique for Canon is that it is a white non-L lens. (Up until now all their white R mount lenses are L series). However, modern mirrorless lenses are so sharp that I wonder if the pro designations such as L for Canon or S for Nikon or GM for Sony are that meaningful? For example I owned the Sony 200-600 which is a G but not a GM. It is I think the sharpest lens I have ever owned. The new Nikon 180-600 (which I have on order) is reportedly equal to the Sony and yet it is not an S series. Maybe the pro designations relate to other features (besides sharpness) such as aperture, internal vs external zoom, build quality and weather sealing. Perhaps Canon didn't feel justified in making an f9 lens an L series (though they made their f7.1 100-500 an L). In any case, given the range and price point and relatively compact size/weight, I foresee this lens being hugely popular. If I shot Canon I might get one myself.
Love Duade's videos!Here is a pretty in depth comparative review. I'm especially torn between the 100-500 with a 1.4x vs. The 200-800. Size and weight matter to me, but the IQ seems similar once the 1.4 is on, 100-500 without the 1.4 seems better IQ.
Saw the same video and it did make me stop and think.Love Duade's videos!
Another YouTuber (Phil Thatch) shared his impressions of the 200-800 on the R7, and says that due to the pixel density of that sensor, it's not a good match. The lower-res'd sensors in the R6/R3, and even the R5, are a better match. Conversely, he says that 100-500 is the best choice on the R7.
100%, if I were shooting Canon, this would be my birding lens on an R5. That, or if Canon were to update the R7 to a more pro-spec (stacked sensor, AF, etc), I'd take the 100-500 instead.