3 ms·
Doing digital zoom "right" involves some serious thought. One issue is technical. The iPhone cannot capture a RAW photo with digital zoom enabled. It's restric
by sandofsky 5y ago
Doing digital zoom "right" involves some serious thought.
One issue is technical. The iPhone cannot capture a RAW photo with digital zoom enabled. It's restricted at an API level. The reasoning is that it wouldn't make sense to crop a RAW file, and there are privacy concerns around saving data in a photo that the user thought was cropped.
Another issue is that digital zooming is awful. You're typically looking at simple interpolation, whereas cropping the photo afterwards in any half-decent editor offers better algorithms. Very smart software can apply super-resolution.
Then there's added UI complexity. On hardware that supports optical zoom, you want to clearly surface to the user whether they're engaged digital zoom or optical. Many users are caught by surprise with how the first-party camera app quietly switches between the telephoto lens and cropping the wide-angle lens when it needs to focus on macro shots; the wide-angle lens has a closer minimum focus distance.
From talking to users, we found many folks use digital zoom as a focus aid. That's why MkII included a focus loupe, which solved that problem in a much more elegant way.
We do have some ideas on how to do digital zoom well. Stay tuned.