Perhaps, but it is really how you look at it.
OK, here's credible to me:
1. A picture of routine quality similar to the quality level for which millions of images of known animals exist.
2. A credible individual that has a credible story about how he came to take the picture.
3. The animal in the picture is is unlikely to be something known, like a bear or a man in a monkey suit.
Some nice to haves:
4. Information from other witnesses that lend support to the photographer's story.
5. Other images that provide independent corroboration of the physical details pictured in the first photograph.
6. The entire set of images that were taken on the CF card or the roll of film.
Let's see how the PG film stacks up on this list:
1. Maybe routine quality for the time, but still a very unclear film.
2. The PG film guys had significant credibility problems
3. Despite SweatiYeti's claims, the animal in the PG film could have easily been a man in a monkey suit.
4. There was more than one witness but two of them had credibility problems and they were acknowledged partners in the hoax if there was one.
5. There have been no other images which lend significant credibility to the PG film
6. The original, unedited film reel has never been made available.
So got any images that can beat the PG film for credibility? The PG film sets a pretty low standard.