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Tiffen 49DF5 49mm Double Fog Filter — main product image
Tiffen

Tiffen 49DF5 49mm Double Fog Filter

★★★★★4.4 (3 reviews)

Wrap your portraits and landscapes in a natural fog-like shroud — the Tiffen Double Fog 5 builds atmosphere and softness at the lens, not in post.

$69.99*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Tiffen 49mm Double Fog 5 filter is a dedicated special-effects filter built for photographers who want to create a natural, atmospheric fog effect in-camera. Rather than simulating mist or diffusion in post-production, it works optically — dramatically lowering scene contrast and spreading highlights to produce an image that feels like it was captured on a foggy morning or under soft, diffused period lighting. The Double designation means the effect strength is approximately double that of a standard Fog filter at the same grade, and grade 5 is among the strongest intensities available. For portraiture it creates an ethereal, romantic quality; for landscapes it introduces mystery and depth; for narrative stills it evokes a timeless, cinematic character that digital sharpening cannot easily replicate.

Tiffen's ColorCore manufacturing process fuses the optical effect directly into the glass rather than applying a surface coating, which contributes to consistent performance and long-term durability. The filter is designed to maintain subject sharpness while working through contrast manipulation — the fog reads as atmosphere, not blur. Flare minimization is built into the design specification, which is important for a filter that tends to be used in expressive, often backlit or high-contrast shooting situations. The 49mm thread size fits cleanly onto compatible lenses without adapters. At 49mm the use pool is smaller than larger-threaded alternatives, but for photographers working within that lens family, this filter opens a distinctive visual language that is genuinely difficult to achieve any other way.

Key Features

Creates a Fog-Like Effect to Image

Maintains Sharpness and Minimizes Flare

Dramatically Lowers Contrast

ColorCore Technology

Specifications

Filter Size
49mm
Filter Type
Double Fog
Grade
5
Effect
Dramatically lowers contrast, creates fog-like atmosphere
Technology
ColorCore
Flare Control
Minimizes flare

Pros & Cons

👍 Pros

  • The combination of contrast reduction and highlight spread produces a cinematic, atmospheric fog effect that would require significantly more effort to replicate convincingly in post-production.
  • Tiffen's ColorCore technology embeds the filter effect within the glass itself rather than applying a coating, resulting in consistent optical quality and effect strength across the filter's lifespan.
  • The filter maintains overall image sharpness while creating the fog illusion through contrast manipulation — you get atmosphere without sacrificing subject definition.
  • Designed to minimize flare, the Double Fog performs reasonably cleanly in challenging lighting conditions where lesser diffusion filters would generate distracting artifacts.
  • The 49mm size fits a range of compact and standard lenses commonly used for portraiture, street photography, and creative landscape work.

👎 Cons

  • Grade 5 is an aggressive effect — this is not a subtle skin softener or light diffusion filter. Photographers who want gentler results need a lower-grade option, which may require purchasing a separate filter.
  • Dramatically lowered contrast means the Double Fog 5 is not a general-purpose filter you leave on the lens — it is a creative effect filter for specific shots, requiring removal and reinstallation throughout a shoot.
  • The fog effect is fixed in intensity and character; unlike post-processing tools, you cannot adjust or remove it after capture without reshooting.
  • 49mm filter thread size serves a narrower range of lenses than larger sizes like 67mm or 77mm, limiting its applicability across a full kit.
  • Heavy diffusion filters like this can complicate autofocus behavior in lower-contrast scenes, as the contrast reduction the filter introduces is the same signal AF systems depend on for focus acquisition.

Frequently Asked Questions

The Double Fog designation means the diffusion effect is approximately twice as strong as a standard single Fog filter of the same grade number. A Double Fog 5 produces a substantially heavier atmospheric diffusion — deeper contrast reduction and more visible fog-like softening — than a single Fog 5 would. It's a strong effect, best used intentionally for creative atmospheric work rather than as a subtle skin softener.
The filter's design maintains overall image sharpness while dramatically lowering contrast and spreading highlights. The fog effect reads visually as atmospheric diffusion rather than a focus-plane blur — subjects remain identifiable and detailed, but the image takes on a luminous, dream-like quality through the contrast reduction.
The Double Fog's design minimizes flare as part of its specification — Tiffen specifically notes this as a feature. That said, introducing any glass element in front of the lens in strong backlit conditions will have some effect; the practical result is typically a soft, controlled glow rather than harsh specular artifacts.
Tiffen offers Double Fog filters in multiple grades (1 through 5, with higher numbers producing stronger effects). Grade 5 is among the strongest grades available and produces a pronounced fog effect. Photographers new to fog filtration should consider starting with a lower grade — 1 or 2 — to familiarize themselves with the effect before committing to the more dramatic grade 5 intensity.
Filter threads are an industry-standard measurement — any lens with a 49mm filter thread will accept this filter regardless of brand. Confirm your lens's filter diameter (stamped on the front barrel or lens cap) is 49mm before purchasing.

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