Glad that you found it useful!

You have just helped me so much thankyou.
Am using this to count chromosome telomere area in FISH images.

I knew something like this would exist, just didnt know how :p

What about all those overlapping leaves?

Thanks
I managed to suss it out by adapting this tutorial.
I had some known measurments within the photo.

Are you just trying to measure the sizes of plots within the photo? Or measure the amount of plant growth within the plot? If you want to convert anything from a picture into real world units, you need to have something within the picture that you know the size of or know how big of an area is being captured by the aerial image at a given height.

Really thought this was an excellent tutorial.
How would I use photoshop to measure land area from an aerial photo?

I’m glad that you found it useful. Be sure to add it to your favorites & give me 5 stars!

Man, this was a HUGE help! thx! (I’m really amateur in ps:)