transform > scale from a pre-selected origin point...how ?

[Merlin3]

Hi

CS6

scaling two images that I wish to match up.

set uppet to 50% opacity, edit>transform, move gunsight to where I have matched the photos so as to keep that area matched.

despite moving the gunsight icon that appears in middle of transform box to where I want the scaling to happen from, it doesnt act as the origin of the scaling. I lose my already matched part of the image.

I thought this icon could be used as scaling origin, apart from rotation origin.

How does one scale a layer from a specific origin ?

Better still, to be able to select points on one image and then their target locations on another underneath and have pshop rubber distort for best match !

That would be fantastic, so useful and a fundamental image manipulation tool. Afetr all these years of development these two requirements need to exist.

Merlin

[Francesco Della Peruta]

please take a look at this tutorial:

Photoshop Tutorial - Use Reference Point To Scale Objects - YouTube

[Francesco Della Peruta · Accepted solution]

You have to hold the "alt" key while scaling to use the origin point.

[Merlin3]

Cheers,

Alt key is the secret !

Now is it possible to select e.g. 4  points on the upper layer then 4 destination points on the lower layer and have pshop to marry the upper to the lower ?

Saves all the rotating and scaling to get best fit. especially where image fills the file and the transform corner boxes are inaccessible.

Merlin