• Skip the 50mm for indoor shots on your crop sensor, it is way too tight unless you are outside.
• Grab the Canon EF-S 24mm f/2.8 STM instead, sits right around 150 bucks and gives you a natural wide view indoors.
• Check out the EF-to-RF adapter if you ever switch bodies later, but for the 90D just mount EF-S glass directly.
• Plug your focal length and room size into the FOV calculator over at Cambridge in Colour to see how it frames up before buying.

Congrats on the gift! Honestly, the 90D is a total powerhouse. Unfortunately, I had a pretty disappointing experience when I first tried using that specific focal length on my own crop sensor camera. I thought it would be a game changer for indoor pet photos, but it really wasnt as good as expected for my small house. Here is what I struggled with:

• I was constantly backed up into corners just to get my dog in the shot.
• The magnification made every tiny hand shake look like a massive blur.
• It felt way too zoomed in for casual living room moments. I really wanted it to work, but the space just wasnt there. If your living room is tight like mine was, you might feel a bit suffocated by how much it zooms in. Its a learning curve for sure, but dont let it discourage you! Youll definitely get those blurry backgrounds once you find the right distance.

I went through this exact same thing and honestly, it was kind of a letdown. I bought the Canon EF 50mm f/1.8 STM because everyone on YouTube says you need it, but inside my house it was a total nightmare. Since the 90D has that crop sensor, the 50mm acts like an 80mm... which means you're basically zoomed into your dogs ear if you're sitting on the couch. I was constantly hitting my head against the wall trying to get enough distance to fit him in the shot. If you're in a small room, the 50mm is gonna be way too tight. I eventually switched to the Canon EF-S 24mm f/2.8 STM which is super cheap and actually lets you see the room. It doesnt get the background quite as blurry as the f/1.8 does, but at least you can actually use it without moving all your furniture. Ngl, I wish someone told me about the 24mm before I spent money on the 50mm. If you can find a used Canon EF 35mm f/2 IS USM it might be closer to what you want for blur, but for $250 the 24mm pancake is a much safer bet for indoors.

Honestly, I have been dealing with this exact same struggle for the last six months and I still havent found a solid solution. It is super frustrating when you just want to get that perfect shot of your pet but the gear just feels like its fighting you every step of the way. I've tried multiple setups trying to find that sweet spot for indoor shots, but like everyone else mentioned, I just keep running out of room or ending up with weirdly cropped photos. Seriously, it has been such a headache and I am still stuck in the same boat as you, just constantly trying to figure it out without any luck so far.

Helpful thread 👍

Like someone mentioned, that 50mm can feel like a telescope inside a house! I had the exact same experience when I started out. I was so excited to get those blurry backgrounds but I ended up just taking photos of my dogs nose because I couldnt back up far enough lol. It was a total learning curve but honestly so much fun to figure out. The Canon 90D is seriously amazing though, you must be so stoked! I remember the day I got mine, I didnt sleep at all just playing with the settings. Before you spend that 250, I gotta ask... how much space do you actually have to move around in your living room? And are you mostly looking to do portraits of your dog or do you want to get their whole body in the shot while they're playing? TL;DR: The 50mm is a bargain but turns into an 80mm on your camera, which is super tight indoors. Make sure you have the room to back up!