Best Wide-angle lens for Canon EOS R5 Mark II?

Hey there!

Upgrading to the R5 Mark II is awesome, congrats! I totally get the wide-angle lens dilemma – been there, done that. Honestly, it's tough to say definitively which is *best*, but I can share my experience.

I've tried a bunch of wide-angles on my EOS R (the R5 Mark II's slightly older sibling, so pretty similar sensor-wise), and while the Sigma 14-24mm f/2.8 DG DN Art is seriously impressive for the price (and I've heard great things about it!), in my experience, the Canon RF 15-35mm f/2.8L IS USM just has that extra 'something'. I think the image stabilization is a big plus, especially for architecture handheld. Plus, the Canon color science just...works for me, ya know?

That said, it's a chunk of change. If you're doing astrophotography, corner sharpness is key, and both lenses are good, but I'd honestly suggest renting both before dropping the cash. See which one *you* prefer on *your* camera. It's the safest bet! Hope this helps!

Hey there! Congrats on the R5 Mark II upgrade - that's a serious piece of kit! I totally understand the wide-angle struggle; I've been shooting landscapes and architecture professionally for years, and finding the right lens is crucial.

While everyone's focusing on the Canon vs. Sigma debate, I'd like to throw another option into the mix and highlight a key technical aspect that often gets overlooked: **lens corrections** and their impact on perceived sharpness.

Consider the **Laowa 15mm f/4.5 Zero-D Shift**. Now, hear me out before you dismiss it! It's manual focus, yes, but for architecture, that's often a non-issue since you're usually on a tripod anyway. The real advantage is its *lack of distortion* right out of the camera. Most modern lenses, including the Canon and Sigma you mentioned, rely heavily on software corrections to remove distortion. While this is generally effective, it *does* slightly reduce the overall resolution and can soften the corners, even on the mighty R5 Mark II.

The Laowa, being virtually distortion-free to begin with, avoids this pitfall. Plus, the shift capability is incredibly useful for architectural work, allowing you to correct converging verticals without cropping and losing resolution. I've found it produces incredibly sharp images with fantastic corner performance, even wide open. It's also considerably cheaper than both the Canon and Sigma options, leaving you some budget for a good tripod or filters.

Of course, the manual focus is a consideration, and it's not the fastest lens for astrophotography. But for landscapes and architecture where precision and minimal distortion are paramount, it's a serious contender.

Also, be cautious with relying solely on online reviews. Always try to rent lenses and test them with your own camera body; this is especially critical when you have such a high-resolution sensor as on the Mark II. LensRentals.com is a solid option for renting.

Ultimately, the 'best' lens is subjective, but don't discount options that might not be the obvious choices! I hope this gives you another angle (pun intended!) to consider. Good luck with your decision!

Hey! Congrats on the R5 Mark II – you're gonna love it! I totally get the lens struggle; wide-angle is where things get *really* expensive, right? Instead of jumping straight into the top-tier glass, have you considered exploring some slightly older, but still AMAZING, options?

I think it's worth considering the used market for Canon EF lenses with an adapter. You can often find gems like the Canon EF 16-35mm f/2.8L II USM for a fraction of the cost of the RF versions. Seriously, I've seen them go for around $800-$1000 in excellent condition. While it's not *quite* as sharp in the extreme corners as the RF 15-35mm (from what I've read; never owned it), on the R5 Mark II's sensor, you're honestly probably not going to notice a HUGE difference in most real-world landscape shots. Plus, you'll have tons of money left over for other gear! Been there, done that, and honestly, I've been thrilled with the results.

As for astrophotography, yeah, that's where the wider apertures are important. If you are really serious, the Rokinon (Samyang) 14mm f/2.8 is an inexpensive option. It is fully manual, so it might not be ideal for all situations. That said, you could grab one of those *and* a used EF 16-35mm for less than a new RF lens. It's all about priorities!

Just my two cents. Remember to check out lens rentals too – a weekend with a lens can be super informative before you commit to buying! Hope this helps!

Hey there!

So, everyone's talking about sharpness and distortion, which is totally valid. But, based on some experiences I've *unfortunately* had, I think it's worth considering the reliability and safety aspects too, especially with third-party lenses on newer camera bodies like the R5 Mark II.

I remember a shoot last year where a friend was using a Sigma lens (not the exact one you mentioned, but still a high-end model) on his new Sony. Mid-shoot, the lens just...froze. Completely locked up. He had to remove the battery from the camera to reset it, and even then, it acted weird for the rest of the day. It messed up the whole workflow. We lost time and some shots. The issue was never fully resolved, and he ended up getting rid of the lens. It wasn't as good as expected, that's for sure.

With that in mind, sticking with Canon RF lenses *might* be the safer bet, at least initially. Canon designs those lenses to work *perfectly* with their cameras. You're less likely to run into compatibility or electronic issues. Now, I'm not saying all third-party lenses are bad – the Sigma 14-24mm f/2.8 DG DN Art is highly regarded – but there's always a *slight* risk of something going wrong, especially with firmware updates down the line. Also, consider weather sealing. Canon L lenses are built like tanks, and that extra protection can be really important for landscape work, especially if you're shooting in harsh conditions. I've had third party lenses let moisture in quicker than Canon's.

That said, if you're comfortable with the possibility of minor hiccups and you're careful about updating firmware, the Sigma could be a great option to save some money. Just make sure you buy from a reputable dealer with a good return policy, just in case. I'd also keep an eye on forums and reviews specifically mentioning compatibility with the R5 Mark II. Also, when you get a third party lens, test it extensively after purchase to make sure it meets your needs.

In my opinion, for peace of mind and guaranteed compatibility, the Canon RF 15-35mm f/2.8L IS USM is probably the *safer* choice, but only you can decide if that peace of mind is worth the extra cost. I hope this helps, and good luck with your decision!

Hey! So, everyone's talking lenses, which is great! But has anyone considered renting before buying? Sites like LensRentals or BorrowLenses let you try out both the Canon RF and Sigma options on your R5 Mark II! That way, you can REALLY see the difference in YOUR shooting conditions before dropping that much cash. Plus, for astro, you could even rent a super-specialized lens just for those occasions! Worth a look, right?

Hey! So, everyone's talking about image quality, which is important, but have you considered the *long-term* cost? I think it's easy to get caught up in initial price tags. I've been burned before, unfortunately.

I'd say, look at Canon refurbs *directly* from Canon. Sometimes they're almost new, have the same warranty, and you save a chunk of change. Also, consider the used market for Canon lenses... it's usually pretty safe. I had issues with a third-party lens mount failing once, and the repair cost basically negated the initial savings compared to the Canon version! Not as good as expected. Think about repairs if something goes wrong down the road.

Basically, factor in potential repair costs and reliability when comparing prices, not just the up-front cost. Does that make sense?

Hey! So, everyone's been giving great advice on lenses, but I wanted to chime in with something slightly different: long-term experience and maintenance. I've had both Canon RF and Sigma Art lenses (though not *those* exact models), and there's a few things I've noticed over several years.

First, weather sealing. While both brands boast it, Canon's RF lenses *seem* (IMO!) to hold up a bit better over time with constant exposure to harsh conditions. I've had a Sigma Art lens develop some internal condensation after a particularly wet shoot, even though it was supposedly sealed. Could just be bad luck, but it's something to consider.

Second, repair costs. If something *does* go wrong, Canon's repair network is generally more accessible and (sometimes) cheaper, at least in my experience. Third-party repairs can be a bit of a gamble, and finding a reputable technician who specializes in Sigma can be tricky depending on where you are. Food for thought!