I am a fellow shopify store owner and spend a few hours a week reviewing stores in the forums.
I've seen hundreds of stores now and I would say the number one problem store owners have is poor product photos (even if they don't know it).
Not long ago I published a guide on how I was able to get stunning product photos without a DIY guide or even a camera.
It's a bit unorthodox but I firmly believe it to be the best way to get consistently beautiful photos of your products.
Here's the link, hope some find it helpful: