Canon RF 24-105/F4 versus RF 24-240/F4-6.3?

Started 3 months ago | Discussions thread
MikeJ9116 Veteran Member • Posts: 5,785
Re: Canon RF 24-105/F4 versus RF 24-240/F4-6.3?

thunder storm wrote:

MikeJ9116 wrote:

From what I have read, and seen in example photos, the 24-105mm f/4 is sharper in the corners at certain focal lengths and might have slightly better color and contrast. I decided to opt for the 24-240mm from seeing examples of how good it performs considering its massive range advantage over the 24-105mm variety lenses. My copy of this lens is sharp in the center at all focal lengths and the corners are no worse than many other lenses with far less range. Even the lens correction in the corners at 24mm isn't horrible. For a 10x zoom it is an exceptional performing lens. I will be using it a lot as a travel and walk around lens. It is by far the best super zoom lens I have owned and, IMO, it really can be a one lens solution for many people who are casual shooters.

Also, I will add that there really isn't much of a loss in light capture from one lens to the other. The 24-240mm holds a f/5.6 aperture up to 104mm so you only give up a stop and 1.33 stops from 105-240mm. Here is the aperture table for the 24-240mm:

24-26mm = f/4.0
27-43mm = f/4.5
44-69mm = f/5.0
70-104mm = f/5.6
105-240mm = f/6.3

From 27-43mm you lose 1/3 stop and from 44-69mm you lose 2/3 stop.

And it's just one stop compared to (almost) the longest end of the f/4.0 L zoom..... Some good information here.

I think one of the more impressive things with this lens is only losing 1.33 stops out to 240mm.

Overall not too bad considering you get an extra 135mm of reach and only give up 1.33 stops through this range compared to f/4.0 at 105mm for the L lens.

Lastly, the IS and AF (Nano USM) for the 24-240mm is very good.

The L is slightly better for traveling as long as you don't need a long reach.

The L f/4.0: 107.3mm length and 695g

The 24-240mm: 122.5mm length and 750g

But's not a big difference.

The lens is somewhat heavy but manageable.  Where it makes up for this is not having to carry other lenses to obtain its range.

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