I agree for a few reasons. One is simply that it allows you more options personally. The other is it allows a market for 3rd party items and expands the limit on what you can access.
Sean McCormack. Author of 'Essential Development 3'. Magazine Writer. Former Official Fuji X-Photographer.
Agree - especially having been on an engagement shoot with a Helios for just this purpose, only to see how compromised it is in other aspects of image quality. I'd like to be able add and, importantly, adjust the amount of swirl.
I was using it again today and noticed a fundamental negative. Normally, as an item in the background becomes more blurred, it's apparent image size increases, yet today I saw the opposite effect happening. In my background there was an OOF tower which i wanted to soften further, but, as I used the slider the tower decreased in width as it became increasingly blurred. It wasn't that the overall size staid the same, and the central, clearer, part of the image decreased, but it's total size decreased. It made the app unusable in this situation.