Product Description

The 81 series filters are useful with daylight corrected film in cool light conditions. Great for improving flesh tones, they create warmer tones and brighter colors on overcast days or when shooting with electronic flash.

Product Details

• Brand: Tiffen
• Model: 5881A
• Dimensions: .20 pounds

Features

• Creates warmer tones and brighter colors on overcast days or when shooting with an electronic flash
• Great for improving flesh tones
• 58mm diameter
• 81A converts tungsten 3,200 K type B film to 3,400 K lighting

Amazon.com Product Description
Useful with daylight corrected film in cool light conditions.

Customer Reviews

So-so
The only thing this filter is good for is protecting the lens from physical damage (dust, prints, scratches, water spots, etc.) Some say that cheap Tiffen filters degrade the quality of the images, but I haven't noticed any degradation. If you want a filter that will actually improve your images, do not get this filter, go with a circular polarizer or a neutral density filter instead. It's better to crack this filter than crack your lens.

Simple UV Protector
It's just a protection filter. It's does a good work by day though it can create weird flares by night if you are trying to picture below a bright light or if there's one pointing towards you.
It also has a weird glass finish in the edges that make it look cheap (even though it is)

can't beat it for the price
I basically use these more to protect the lens and have never really taken enough photographs without one to know if they make a difference. These can be considered as very inexpensively priced insurance items for your much more expensive lens. I have one of these on every lens I own.