Hello Manvir T,
I’m Gunasekar and I will be happy to help you with your question, I am a Microsoft consumer like you.
By default, OneDrive uploads the photos in the reduced-quality format. How it works is,
a. If you upload a 5.2mb File to OneDrive, it uploads it as 4.3mb. b. But, when you download the same file, it should be in the original quality.
More information on this thread: Onedrive photo quality reduction
https://answers.microsoft.com/thread/83ac0ece-3f89-42cb-8abd-b9a69666b21a
However, Microsoft Offers to save high-quality images in original formats. Ensure you have selected this setting.
To change image and video capture settings. You may be able to update a setting on your Apple device camera to capture photos and videos in other formats.
- On your iOS device, open Settings, then tap Camera > Format.
- Under Camera Capture, tap Most Compatible.
I hope this information helps. If you have any questions, please let me know and I’ll be glad to assist you further.
Best regards,
Gunasekar N