The photos displayed on the screen are always brighter than once printed. This is due to the fact that screens are backlit (even recent LED screens).
That's why it's recommended to add light to the darkest photos. This will allow you to obtain a better result when printing.
Our application offers a number of effects that can help improve your photos.
The "Light" effect is often sufficient. For very dark photos, it is preferable to improve the photo before uploading it to the album.