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When do you see the difference between RF lenses that are 2.8L vs 4.0L

Started 9 months ago | Discussions thread
MitchAlsup Veteran Member • Posts: 5,518
Re: When do you see the difference between RF lenses that are 2.8L vs 4.0L
2

jclin10 wrote:

I’m thinking through what lenses to purchase for my R series Canon. While the 2.8L lenses are optically superior, the 4.0L lenses are still very good and less expansive and heavy.

Under what shooting conditions will I see the difference in quality between one line of lenses against the other line of lenses?

You will feel the lightness of the F/4.0 over the F/2.8 every friggen time you pick up the camera.

You will use the F/2.8 every once in a while--when you want to blur foreground/background parts of the image; or when you need the speed to get the shot (low light) where you are pushed up to the limit with ISO.

Only the blur part is impossible with the F/4.0 lenses.

Used between F/4.5 and F/8.0 there are no realistic differences, and between F/8.0 and F/16 there are realistically no useful differences. Used at F/4.0 the F/4.0 lens may (M A Y) underperform the F/2.8 lens at F/4.0 by a little.

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Mitch

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