[Beginner's Question] How do you know if he used photoshop or not?

[Doug Sundseth]

Here's Matt Kloskowski's article on the difference:

Lightroom – Exposure vs. Brightness - Adobe Photoshop Lightroom Killer Tips | Adobe Photoshop Lightroom Killer Tips

[Dreamglade]

It's difficult to really explain in 'Plain English'. But suffice to say, brightness more or less affects the midtones and tends to preserve details in highlights. It works by effectively shifting all levels by an equal amount but seems to have more of an observable effect in midtones.

[Partsrept]

Originally Posted by jinjin

Hi everyone, I am learning how to use the photoshop recently.

and now I have a Beginner's Question....

how do I know if a photo is processed with photoshop or not?

for example, I saw this photo
Photobuyer: Spring in Tokyo

the lighting in this photo seems little bit weird.
I am suspecting that he used photoshop.
but, how do I know the truth without asking that person.

is there a way to know?

he used lihgtroom