I just picked up a used Canon R6 and I am honestly broke now lol. I spent way more than I should have on the body because I wanted that insane autofocus but now I am stuck with just a 50mm prime and I am realizing I really need a zoom for my trip to Zion next month. I do not have a ton of cash left, probably 400 or 500 dollars max, which I know is peanuts for RF glass but it is what it is.

I am basically torn between two very different paths right now. First is the RF 24-105mm f/4-7.1 IS STM. It is super light and native which is nice but that f/7.1 at the long end scares me a bit... like is it even usable if the sun starts going down? Then there is the older EF 24-105mm f/4L IS USM. I can find those used for around 350 but then I have to buy the adapter which adds another 100 bucks and makes the whole thing pretty front-heavy I think.

My main requirements are:

• Must be under 500 total including the adapter if I go the EF route
• Good enough for landscape shots and maybe some candid family stuff
• Decent stabilization since I will be hiking and wont have a tripod most of the time
• Not a total brick to carry around all day

I am leaning towards the native RF one just because of the size and the fact that the R6 sensor can handle higher ISO anyway but then I see people saying the old L series glass still looks better even if its 15 years old. Does the f/7.1 really suck that bad on a full frame sensor like the R6? Or should I just suck it up and get the heavy EF lens? If there is a third option I am missing like a Tamron or something that works well with the adapter let me know. I really just want something versatile so I am not swapping lenses while walking the trails...