In the quest to find a replacement for Autostitch I have another new (to me) app...
I saw this app in a search and contacted the developer who was kind enough to send me a redeem code.
Photo and Panorama Stitcher by Stephen Lobdell
https://appsto.re/ca/0QP_gb.i
So far I have had pretty good results.
Sample one is 4 images making one large pano of a sunrise. On screen they looks very good from Photo Stitcher or Autostitch.
First difference is that Photo Stitcher automatically crops whereas Autostitch will stitch the images together and show the curved edges and you can save the image as is or you can crop or adjust the crop to what you want. If I let it auto-crop I get a slightly different image ratio as Photo Stitcher cropped a bit more off both ends. Not a big issue.
Save resolution is vastly different though with Autostitch saving at 6880x1920 and Photo Stitcher saving at 1975x650. If you zoom in with Photo Stitcher as far as you can things still look surprisingly good with only minor lose of sharpness.
Sample two is two images making a pano of a WWII Bomber.
Again both images look good on the screen and again despite saving smaller surprising good from Photo Stitcher.
Biggest difference is how it merged the images together and in this case I like how Photo Stitcher did this. When taking the original images One person shifted in between the two images and in Autostitch this is clear to see as the person shows ghosted double exposure. Photo Stitcher on the other had show the person without any ghosting.
Photo Stitcher saved at 2440x1168 whereas Autostitcher saved at 4696x2344. Some detail lose if you zoom right in on either one, things like the rivets holding the panels together are slightly softer and some of the minor surface detail in the panels is lost but again far better than I expected.
I was hoping that Photo Stitcher would save larger to retain more detail, but overall the quality for the size is impressive.
Sample three is four images and a pano of the work they are doing in front of our house (sidewalks). While Autostitch had no issues using all four images Photo Stitcher only used two of the four.
Sample four is a sunset pano taken in Outlook at Karen's Cousins reunion last year. 5 Images that again AutoStitch had no issues with joining. PhotoStitcher may have joined them as its had to tell as I landed up with a line on the screen that was only a few pixels wide. In the Album that the images are saved to it says the pano is there but nothing shows so I will try it again.
Photo Stitcher when done shows the stitched pano onscreen and says to tap above to select more images to make a new pano. I found it sometimes frustrating because you could tap as much as you like and nothing would happen, other times it would work. If it doesn't want to work quit out of the app and restart it and sometimes t will work.
Tonight I took some images and the app would get as far as the main splash screen and no matter where I tapped it refused to open the requester to pick images. I tried quitting and restarting and that didn't work. I deleted the app off my ipad and went back to iTunes Store and downloaded it again but still refuses to do anything. I have tried in both portrait orientation as well as landscape and neither work. Have tried a reset and still refuses to work,
After moving some images to the desktop, moved around 1500 images it now works again.
Tried another Panoramic this morning and it stitched all images without any issues and though still not as high a save resolution it did work and in this case did better then Autostitch. Again there was slight ghosting in the Autostitch panoramic and none in this image.
I have been in touch with the developer and he is going to look into making the UI a bit better, he also liked my suggestion about having the option to decide how the app crops rather then it automatically cropping, and trying to resolve the selection not working sometimes. Hope save resolution goes higher as well but for the moment its a decent app so long as you don't have too many images in cameraroll. I initially had around 4000 and had the issues with tapping doing nothing but with around 2500 now it works.
This is Autostitch
View attachment 97237
Photo Stitcher
View attachment 97238
The Ghosting differences are easy to spot, the Roller in the centre has some towards the front of the machine as well as the rear of the Bobcat.
The app is $0.99 and for that I think it is well worth it.