Re: Canon 24
MartynV said:
Larsskv said:
I own both the 24-70 f/2.8 L II and the 24-70 f/4 L. I use the f/4 when hiking, due to it's weight and size advantage.
On my Canon 6D, I find that the f/2.8 is sharper in the center part of the image on all focal lenghts, has better micro contrast and clarity. Further, it is sharper in the corners at 24 mm. However, be aware that these differences are quite small, and for the most it requires pixel peeping to see any difference. The biggest advantage of the f/2.8 is the quality of the bokeh, I think.
However, when it comes to sharpness, the f/4 is the more even performer. While the f/2.8 is great in the center at all focal lengths, and great across frame at 24mm, the f/4 has more even sharpness across frame at other focal lengths than 24 mm.
On my 7DII I think the f/2.8 the advantage in performance is bigger than on my 6D. The f/4 however, is still the more even performer when it comes to sharpness adross frame.
All in all, the f/4 is a great lens - especially for landscapes, where even sharpness across frame is important. I will keep the f/4 due to the even sharpness, size and weight. IS is always ok to have, but I really don't miss it that much With the f/2.8. I'm not much of a macro shooter, so I won't comment on that.
Thanks for the reply. I'm surprised that the f/4L holds up against the f/2.8L II. The f/4L's bokeh is somewhat better than my 35mm f/2 IS. Do you find the f/4L's macro mode useful?
I don't shoot macro that much, so I can't really comment on how good it is. To me, it's nice to have the opportunity.
With regards to my comments on sharpness with the f/2.8. The f/2.8 is very good all the way to the corners on all focal lengths. My problem however, is that on some focal lenghts, especially 35mm, the sharpness is pretty bad in parts (down to the left) of the image that is off center. It could be something wrong with it, but it is very good at both 24 and 70 mm, so I have settled with this minor weakness.
For my use, the f/4 is a great good light hiking and landscape lens, and the f/2.8 is a great all round lens. For a do it all lens, it's great to have the extra stop of light and excellent bokeh, over the f/4. The f/2.8 is the better performer for portraits.
Edit: Just to be clear - the f/2.8 definitely has something to it, that the f/4 doesn't, and it defends it's price, and position as the better all round lens. The increased clarity and contrast makes many photos, such as portraits, "pop" in a way that I find comparable to photos taken with my 85L II and Zeiss Macro-planar 50 mm f/2. If I had to choose only one lens, it would probably be the f/2.8. When I hesitate, it is because I have the advantages of the f/2.8 covered by the mentioned 85LII and Zeiss 50. If I didn't have those, I would with no doubt pick the f/2.8 over the f/4.
As a side note, I find it sad that the qualities of the f/2.8 (and 85L) with regards to clarity and micro contrast often is overlooked in many tests. There are something to such lenses, that don't show up in test charts and mtf curves, that makes a noticable difference, but to often is overlooked (With Dustin Abbott's reviews as a very welcome exception).