> What is the best lens I should buy for a Canon R5 if I only want to carry one single thing around? In my experience, the Canon RF 24-105mm f/4L IS USM is the safest bet for Tokyo. Ive tried many lenses over the years, and this one stays on my camera 90% of the time. It handles low light well and the zoom is perfect for portraits. Its around $1200 and wont let you down.

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man i am in the exact same boat right now. i am currently packing for a trip to london and i am totally paralyzed by this exact choice... its a lot of money to drop when you are worried about making the wrong call. last time i went to kyoto i brought three lenses and hated my life by day three because my shoulder was dying, so i am definitely doing the one-lens thing this time too. but man, the reliability factor is stressing me out. here is the research i have been obsessing over for my own trip:

• Canon RF 24-105mm f/4L IS USM: the build quality is top tier and super reliable if it rains, but i am worried that f4 might be a bit slow for those dark restaurant shots.
• Canon RF 24-240mm f4-6.3 IS USM: huge range which is awesome for temples, but be careful because it isnt weather sealed and the image quality can be a bit soft at the edges.
• Canon RF 35mm f1.8 Macro IS STM: incredible for street food and low light, but i am scared i will feel trapped with just one view. i still havent pulled the trigger yet because i keep second-guessing everything. every time i think i have it figured out i change my mind. hope we both figure it out before our flights... its a tough spot to be in when you just want to get it right.

^ This. Also, I was super satisfied with a single-lens setup when I did Kyoto. Makes the trip way better. Just know that lower f-numbers like 2.8 give you that blurry background but usually add weight.

• Are you okay with a bulky setup, or do you want something light?
• Do you plan on shooting mostly at night? Check out DPReview's sample galleries to see how different apertures actually look!