Man I wish I found this thread sooner. Would have saved me so much hassle.

Honestly, after shooting for years, my best advice is to stop stressing over spec sheets and just grab glass that feels right in your hands. In my experience, if the construction feels flimsy, you probably wont use it as much as you think. Real-world durability is what actually matters when you're lugging a kit around all day. Keep it simple and look for stuff that balances well on your body.

• Prioritize weather sealing if you're ever shooting outdoors
• Look for lenses with premium manual focus rings for better control
• Buy used from reputable shops to save a ton of cash Dont get caught up in the hype cycle. Just find a solid manufacturer and stick with their ecosystem, the mount transitions are fine but sticking to one brand makes life way easier in the long run. If you need any tips on carrying gear or keeping it clean, just shout.

100% agree

Like someone mentioned, Darrel is spot on about the feel of the lens. I spent years lugging heavy EF glass around, and when I switched to the RF system, I made the mistake of chasing weight savings alone. I picked up a lighter prime and honestly, it felt like a toy compared to my old gear. I ended up selling it and grabbing the Canon RF 50mm f/1.2L USM because the heft actually helps me stabilize my shots during long evening shoots. Be careful with those lighter barrels, especially if you move around a lot for work. My quick tip is to always check the lens mount flange for any play before you head out into the field. Make sure you balance your rig properly, or you're gonna end up with some serious wrist fatigue by the end of the day. Its totally worth checking the balance with your specific body before you commit.

Im glad you found the information you needed, but i'm curious to hear what gear you actually decided on. In my experience, it is always wise to prioritize reliability and build quality when you are investing in the RF system. I've tried many different lenses over the years and some definitely feel more robust than others in professional environments. Could you clarify what your total budget is? Also, are you looking for a versatile zoom for general use or are you more interested in specific primes? I just want to ensure you're making a safe choice for the long haul.

just saw this thread. before digging into deep technical stuff i gotta ask what you are actually aiming to shoot? sports, portraits, or maybe just travel stuff? makes a huge difference for which direction you go with the RF mount since the optics vary so much. honestly for a solid start you cant go wrong with these:

• Canon RF 24-105mm f/4L IS USM for the constant f/4 aperture and decent weather sealing
• Canon RF 50mm f/1.8 STM if you need something lightweight and fast for low light without breaking the bank the build quality on the L series is obviously superior but some of the cheaper non-L lenses actually hold up pretty well if you arent bashing them around daily. let us know the subjects you are focusing on and i can give a more specific technical breakdown.

Building on the earlier suggestion, ive noticed that several mid-range RF options unfortunately do not meet the durability standards of the older EF L-series. For instance, the Canon RF 24-105mm f/4L IS USM is a decent generalist tool, but i have seen issues with the ribbon cable longevity in high-cycle environments. If you require absolute reliability, the Canon RF 28-70mm f/2L USM is superior despite the weight, as the optical stabilization mechanisms in the lighter zooms are often the first point of mechanical failure. Check the lens mount play periodically. Some of my RF bodies have developed a slight wobble with heavier glass which is quite frustrating for precision work. Its not as good as expected compared to the old tank-like builds. Ive had issues with dust ingress on the extending barrels too... definitely a design flaw.

Saving this whole thread. So much good info here you guys are awesome.