RF 24-105 f/2.8 and 28-70 f/2 Comparison

danfaz

Coffee Fiend
Jul 14, 2015
954
1,835
www.1fineklick.com
Hey everyone, I did some comparison shots between the two lenses to compare sharpness and bokeh, and field of view.
There is no extra enhancing on these jpegs, just DLO in DPP for all shots (that seemed fair to have each lens optimized to its potential). All shots were at each lens' widest aperture. On the Santa toy, focus point was the mouth, the book in the very center, and the portraits were all on one of the eyes.

Some interesting obsevations: the 24-105 is sharper than the 28-70 at widest focal lengths, but might be a draw at the longest focal lengths.

The 28-70 is known to be wider than its adverstised range, something like 25 or 26 to 65mm (?). This is evident as the 24-105 is noticeably tighter in all shots. I added a pic of the 24-105 at 24mm, and you'll see it's only slighter wider than the 28-70 at 28mm. I also added a pic frome the 70-200mm f/2.8 at 70mm to have a third variable, and it's closest to the 24-105. The 24-105 might be tighter than advertised, or the 70-200 could be wider...

With the bokeh, both lenses have the onion ring look, so basically a draw there. With the 24-105's tighter FOV, the bokeh balls look the same size at 70mm as the 28-70's, but larger at 105mm.

So, download or have a look at the comparisons and let me know what ya think:

 
Last edited:
  • Like
Reactions: 1 users

danfaz

Coffee Fiend
Jul 14, 2015
954
1,835
www.1fineklick.com
They look about equal and boke isn't substantially different at those distances. If it's ok, another comparison I'm curious about would be a tight close up using the 28-70 at 70 and f/2 and a close up with similar framing with the 24-105 at 105 and f/2.8. Your bookcase as the background should be a good demonstration.
I'll do that, Eric!
Appreciate the feedback :)
 
  • Like
Reactions: 1 user
Upvote 0

danfaz

Coffee Fiend
Jul 14, 2015
954
1,835
www.1fineklick.com
Hey everyone, I added some final comparisons: sunstars and flare at f/22, and some outdoor portraits. On the portraits, the camera was in same spot for each pic. There's one shot with both lenses where I'm standing in same spot. Then, I moved closer to the camera to try and get same framing with the 28-70 as the 24-105.


Preview:
1000015142.jpg
 
Last edited:
  • Like
Reactions: 1 user
Upvote 0
Aug 10, 2021
1,863
1,670
Hey everyone, I added some final comparisons: sunstars and flare at f/22, and some outdoor portraits. On the portraits, the camera was in same spot for each pic. There's one shot with both lenses where I'm standing in same spot. Then, I moved closer to the camera to try and get same framing with the 28-70 as the 24-105.


Preview:
View attachment 214201
They really are about as good as you can get without a prime. As far as I can see, the difference is really about preference of aperture or range of focal lengths.
 
  • Like
Reactions: 1 user
Upvote 0