Stronger diffusion than 1070 — pronounced bloom and halation. Dreamy, romantic glow; workhorse for wedding cinematography and intimate scenes.
You need the 1570 when you want to soften light without losing control. Tiffen has turned the dial up a notch compared to the 1070 — the diffusion is more aggressive, the bloom more pronounced. The material itself has a finer texture, which is why it doesn't look flat but intentionally brings a romantic softness to the image. On set, you'll notice the difference immediately: highlights start to bleed, skin tones look velvety, candlelight and neon lights develop a natural-looking halo effect — not like a soft filter overkill.
The 1570 has long been a standard in wedding photography, and that has carried over into cinema. Love scenes, first looks, backlit dances — anywhere you want the light to appear dreamy without completely sacrificing image sharpness, you reach for it. The effect works particularly well with warm light and the golden hour. If your key light is at 5600 K or below, the filter further enhances the warmth. This isn't a bug, it's the intention.
Practical on set: Be mindful that contrast and separation don't completely collapse. The 1570 can be a bit of a dilettante — if you're not careful, dark areas will blend into each other. Therefore, expose a bit more deliberately forward. With modern digital cinematography (Red, Alexa, Venice), the filter works surprisingly subtly because the sensors already have a high base noise level, and the bloom doesn't create too much inherent noise. It's different with film: on 35mm, especially with Kodak stock, the 1570 becomes lush, and lush is a compliment here.
In the edit, you'll notice whether the filtering was maintained consistently — or if your DP forgot to switch it in the third take. Inconsistency in diffusion across a dialogue is brutal. Therefore: if you're shooting a scene with a 1570, do it consistently. The filter works hand in hand with color limitation and contrast ratio. Combining it with a classic tungsten setup and desaturation in the color grade creates the typical modern "Indie-Romantic" look — diffuse, but not muddy.