This video assumes everybody has perfect memories but memory capacity is as different as looks, height, weight, hair color, health, etc. Please have mercy next time and break it up into smaller pieces.

In other words, memory capacity is very unequal and always has been. Those with good memories should never be involved in training others unless they first test their training concept on somebody without a good memory. The person without a good memory can help the teacher learn to be a better teacher. That is quality control.

I’d like to second this comment.

It’s great to see how to make a quick mask that handles most of the job, but as with many things, the devil is in the details.

For example, in the sky replacement example, the sky behind the trees that are just to the left of the structure and on the horizon were not included in the mask. If the new sky didn’t happen to match the color of what was there before, it would be glaringly obvious that something was wrong. (You can see this when you were going through some skies where those unmasked areas didn’t match before you selected your ultimate sky.)

Similarly, the animal’s fur in one of the early examples was partly masked and partly not.

And wisps of hair are notoriously difficult to mask.

These may be minor details, but when printing on a large format printer or making a large scale image those things are noticeable.

Thanks.

I would also like to see other examples as outlined by Richard Marsh