Hoya C2 Cooling Filter – 82A Color Correction for Warm Light warming filter They save time

They save time

This prevents any noticeable color cast to your images

The Hoya W4 filter is helpful when:

Exposure loss: 1 1/3 Stop Mired Shift +120 Equivalent Filter 85B Glass Type: Hoya Optical Number of Multi-Coatings: 6 total / 3 each side Hardened Top Layer: No Anti-Static: No Frame Construction: Low Profile / Aluminum Front Filter Threads: Yes

These two filters are also available as a set

Hoya C2 Cooling Filter – 82A Color Correction for Warm Light warming filter They save timeDescription The C2 color correction filter cools the ambient light entering the lens by 200 kelvin ( 20 mired shift) by adding blue to the overall exposure. This filter helps fine tune the color or look of your scene to match your film's white balance. The Hoya C2 filter is helpful when: You are using tungsten balanced film and the light source is warmer than the traditional 3200 K and you need a specific amount of color correction to match your film