RF 100mm macro lens is the best choice.

Stumbled on this thread and man, I feel your pain. I have been using the R7 for a while now and honestly, finding a lens that actually keeps up with fast bugs has been such a letdown for me. I had so many issues with the AF hunting at the worst possible moments... it is just so frustrating when you finally spot something rare and the gear just wont cooperate. Unfortunately it feels like we are still waiting for that perfect solution that doesnt cost a fortune or weigh a ton. I really hope you have better luck than I did tho because this camera can be amazing when things actually click. Tbh you should just check out YouTube for this. I saw a super detailed video a few days ago where they compared a bunch of different setups for the R7 specifically. Just search for canon r7 macro lens shootout and it is basically the first thing that pops up. There is also a huge breakdown on one of the macro subreddits if you search there too... way more info than I can type out here while I am still annoyed at my own missed shots from this morning. Let me know if you need help finding those links later tho.

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If you're looking for something more affordable, consider the RF 85mm F2 Macro IS STM lens - it's around half the price of the RF 100mm F2.8 L Macro IS USM lens. It only does 1/2 life-size, so a subject that is 72mm x 48mm will fill the frame, but that's good enough for close up shots of flowers and will be more than enough for frogs, but anything but large insects will require higher magnification. There are 5-stops of Image Stabilization which increases to 8 stops when combined with the R7's IBIS - when shooting macro 8 stops of stabilization will help you to shoot pin-sharp images at lower shutter speeds.

I’ve been using the R7 for macro work for a few months now and tbh, I’ve found that the "best" lens depends entirely on how much you trust your gear in the field. I learned the hard way that when you're deep in the brush chasing skittish things, you need stuff that won't quit on you. Here are a few things I've picked up from my personal experience:
- Weather sealing is absolutely critical if you're out at sunrise when the dew is everywhere and everything is soaking wet.
- I prefer glass with internal focusing because I’ve had issues in the past with extending barrels sucking in dust or physically hitting branches and scaring my subjects.
- Reliability of the mount connection is huge—you don't want any play or wobble when you're trying to hit that tiny plane of focus! My current setup has really held up through some rough conditions. I used to worry about every little spec of dust, but now I just value having a kit that works every single time I press the shutter!!! Definitely look for something that feels solid and can take a bit of a beating if you're planning to get serious about it.

Been thinking about your budget and honestly, from a market analysis perspective, the native RF glass isn't always the safest bet for your ROI right now. If you're looking for professional-grade reliability without overspending, looking at the broader market of adapted lenses and specialist optics is the way to go. Here are a few things to consider for that R7 setup: - Canon EF 100mm f/2.8L Macro IS USM: Wait no, I mean the older EF version, not the RF. From a market standpoint, this is still the industry standard for reliability. You can pick one up used for way under your budget, and the AF performance on the R7 with the EF-EOS R adapter is actually incredibly snappy. It's built like a tank, too.
- Venus Optics Laowa 100mm f/2.8 2X Ultra Macro APO: This is a huge market disruptor because it offers 2:1 magnification. For tiny insects, that extra 2x life-size reach on an APS-C sensor is soooo helpful. It's a manual lens tho, which might seem risky, but for skittish bugs, most pros find that AF hunts too much anyway. - Lighting is basically more important than the glass. Don't blow the whole $1000 on the lens alone. Save some for a Godox V1 or a dedicated macro twin lite and a good diffuser. Adapting EF glass is a very conservative and safe move for the R7. It works perfectly and saves you some cash for other stuff like a rail or a better tripod head.

So I've been using my R7 for a few months now and one thing I wish I knew earlier is how much the lighting matters. Like, even if you buy a really expensive lens, when you get super close to a bug, the lens itself often blocks all the sun. It is so frustrating to finally find a cool subject but then the photo is just too dark or blurry because you can't get enough light in there without a flash. Also, you should really watch out for the focus bracketing feature. It is cool for getting everything in focus, but it is totally a trap for your computer storage. I have filled up my memory cards in like an hour without even realizing it. Here are some things I've noticed:

• The battery dies way faster than I expected when using the high-speed shooting modes
• If you get a big lens, the R7 is so light that it feels really front-heavy and can hurt your wrist after a few hours
• Tiny bits of dust show up really easily on the R7 sensor images because of the high pixel count Are you thinking about getting a flash too? I am still trying to figure out if I need a special diffuser, but it seems like just the lens alone isn't always enough to get those sharp shots you see online. It's definitely a bigger learning curve than I thought it would be!

Solid advice 👍

> If you're looking for professional-grade reliability without overspending... I definately agree with that perspective. When you're dealing with the R7, your basically working with a very high pixel density—around 3.2 microns—which means any tiny bit of dust or optical flaw is magnified way more than on a full-frame body. Reliability isnt just about the build, its about keeping the path clear. One thing people realy mess up when they go the DIY route for maintenance is cleaning the sensor or the rear elements. A big warning: never use canned compressed air inside the chamber. It can spray propellant onto the sensor filter or, even worse, jam the shutter mechanism on a high-speed body like the R7. If you want to handle your own servicing to save money, keep these things in mind:

• Use a dedicated sensor loupe to check for debris before touching anything
• Only use swabs specifically sized for the APS-C sensor
• Avoid over-saturating the swab with fluid The R7 has a deep sensor recess because of the RF mount flange distance, so its easy to accidentally bump the sides and get grease on your tools. If youre not confident, just pay for a professional clean. Its way cheaper than a sensor replacement if you scratch the coating. Anyway, just keep an eye on that dust since macro apertures show every single spec.

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