Announced today, Canon's first new 20mm lens in 33 years and two stops faster than the EF 20/2.8. I preordered one at announcement time, looking forward to seeing how it performs for astro. MTFs look similar to the 24/1.4L VCM, the new 20/1.4 uses the BR coating ('blue goo') like the EF 35L II and RF 85/1.2L to reduce CA.
I already have the RF 24/1.4L, this one is pretty close numerically but 20mm is noticeably wider in my experience, and also means an extra 4 trail-free seconds for stars.
Me too. And I can't justify having both. So I guess I sell the 24mm?Originally Posted by neuroanatomist
R6 II --- RF 14-35mm f/4L IS --- RF 24-105mm f/4L IS --- RF 70-200mm F4L IS --- RF 100-400mm F5.6-8 IS --- RF 24mm f/1.4L --- RF 600mm f/11
70D --- EF-S 10-22mm f/3.5-4.5 --- EF-S 17-55mm f/2.8 IS --- EF 70-200mm f/4L IS --- EF 85mm f/1.8
I'm considering it, but it seems a shame to sell a lens I bought so recently. I'll probably keep both and see which gets more use. The bigger question for me is do I really need to also keep the RF 24/1.8 STM?
It looks really good but I haven't been able to find any reports of how much coma it will have in the corners. That can really wreck star images.
Jonathan Huyer
www.huyerperspectives.com
I doubt you will see such reports until the lens is actually released at the end of the month. The MTF charts suggest that astigmatism is low, which is a good sign. Overall, the 20mm seems like a close sibling of the 24mm and the latter lens controls coma very well.
That's good to know. I had the old EF 24 f/1.4 L and I had to stop it down to f/2.0 to avoid coma. Then I got the Sigma 14 f/1.8 and my goodness that is a terrific lens for astro.
Jonathan Huyer
www.huyerperspectives.com
I am interested to see how much coma the 20 f/1.4 has. If minimal....it is going to be tough to keep it out of my kit. But I may wait a bit. See if Canon does something slightly wider. This is mostly because I am happy with the 24 f/1.4. So far, great lens.
So, before picking up the 24 f/1.4 VCM, I would have called a low coma fast 20 mm lens a near perfect compromise, and I still might. But now, I wonder if I keep the 24 mm VCM, would I go with two lenses, something in the 14-18 mm range, if Canon were to release it. We'll see. Shoot 'til you need something. Right now I need very very little.
My 20/1.4 VCM arrived today. Mini-review posted here:
https://www.canonrumors.com/forum/th...-4l-vcm.44483/
Great review! Looks like it's great for astro, and for artistic landscapes. Thanks for posting.
Jonathan Huyer
www.huyerperspectives.com
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