Old-school cameras often had poor quality lenses that struggled to capture sufficient light in the corners of the frame. This meant underexposed corners, which results in a dark vignette.
Ironically, we can use the Lens Correction filter to get similar Photoshop effects.
You could add the vignette directly to your image, but for added control – or if you’re working on a multi-layer document – add the effect to a separate layer. To do so, Alt-click the New Layer icon to access the New Layer box. Choose Mode: Overlay then check ‘Fill with Overlay-neutral colour’.
The Lens Correction filter is compatible with Smart Objects, so right-click on the layer and choose Convert to Smart Object.
To apply the vignette, go to Filter>Lens Correction then click the Custom tab and use the Vignette Amount slider to darken the corners.
6. Lens flare
Lens flare can help to make parts of the image look unevenly exposed or faded.
Add a grey layer in the same way as the vignette technique then go to Filter>Render>Lens Flare. This is where Smart Objects show their worth, as you can double-click the filter to reposition the flare if necessary.