Product Description

The Blue 47 is a dark blue filter that accentuates haze and fog. It can be used for dye transfer and contrast effects. Although originally intended for use with black and white film, this filter can also be used as a creative tool in color photography.

Product Details

• Brand: Tiffen
• Model: 5847
• Dimensions: .90" h x 3.40" w x 4.20" l, .20 pounds

Features

• Dark blue filter
• Accentuates haze and fog
• Used for dye transfer and contrast effect
• 58mm diameter

Amazon.com Product Description
Primarily for black-and-white photography.

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.