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. 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. Re: Canon EF-S 17-55mm f/2.8 Vs Canon EF 24-105mm f/4 L In reply to nehru • May 26, 2011 One thing to think about is this, if you came from the kit lens 18-55 and felt restricted from the focal range, that wont change. R6 Mark II w/RF 24-105mm IS STM: $2,599 at B&H, at Adorama, at Amazon and at Crutchfield. R6 Mark II w/RF 24-105mm f/4L IS USM: $3,399 at B&H, at Adorama, at Amazon and at Crutchfield. Canon EOS R6 Mark II and RF 28mm f/2.8 STM. bigger. New since EOS R6 intro top. 40 FPS silent electronic shutter, up from 20 FPS in the R6. 1. Canon RF 24-105mm F4-7.1 IS STM (as a kit) + Canon RF 85mm f2 OR. 2. Canon RF 24-105mm f4 L IS (as a kit) The second option looks more logical, but I am not sure how much better the prime 85 will be for portraits compared to the L zoom. (The RF 24-70mm f/2.8L is beyond my budget) I would appreciate any advice. John Riley reviews the new Canon RF 24-105mm f/4L IS USM, the standard kit lens for the EOS R. Used Canon EF 70-300mm f/4.5-5.6 DO IS USM. Like New £354. Sell or trade used photo and video The RF 24-105L is regarded as a nice little kit lens, very useful zoom range, constant f/4 aperture, and typical L glass features (weather sealing, construction, etc). Do note though, not all L glass is created equally, this is still a kit lens. For your uses, it would be a great idea as a starter lens. El EF 24-105mm f/4L mantiene una alta calidad de imagen en todo el intervalo que abarca. Esa importante cualidad es una de sus grandes bazas. 3. Diafragma y estabilizador de imagen. La apertura máxima que proporciona el diafragma es f/4. No aporta una elevada luminosidad, sin embargo, permanece estable en ese valor en todo el rango de distancias. Which 24-105mm lens is best for EOS R mirrorless cameras? One man’s journey to find out!Check prices or order at B&H: .

canon ef 24 105mm f 4 l review