what is the purpose of a UV filter?


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erictan8888

Senior Member
Nov 9, 2004
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#1
hi,

just like to ask a few questions:

1. what is the purpose of a UV filter ? How different is it from a lens hood?

2. How much is a UV filter for nikon D70 ? where can i get it ?

thx
 

user111

Senior Member
Jul 27, 2004
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#2
filter is to screw on over the lens. depends on what lens diameter it is (eg 52mm, 67mm, 77mm). the filter is to prevent finger/water/rain splash /dirt/dust/whatever rubbish etc from coming into direct contact with the lens glass front element surface. the other function is since its a UV filter, it will supposedly filter out UV ray that will lessen the picture's contrast. if u use lens hood only without filter, the lens glass element is still exposed

expensive filters are B+W brand, nikon brand, etc. more affordable brands are HOYA. within HOYA itself it has mny different grade of filter. to save cost, a simple normal hoya UV filter will do. u wont see that much of a difference between cheap filter and branded ones
 

West_ray

Senior Member
Feb 10, 2003
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Yishun
galleries.photonx.org.
#3
erictan8888 said:
hi,

just like to ask a few questions:

1. what is the purpose of a UV filter ? How different is it from a lens hood?

2. How much is a UV filter for nikon D70 ? where can i get it ?

thx
u dont get one for ur d70, u getting it for ur lens.
 

espn

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Dec 20, 2002
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Planet Nikon
#4
The front element of every len is exposed (ie: naked), thus it has no protection, UV filter cuts off the UV rays (for film) and images will appear less hazy.

It's recommended for all SLR lenses to have one to protect the front element (since it's coated) against knocks, scratches, etc etc.

Len hood protects against flare, excessive light from enterting the barrel and also general protection against knocks and such.
 

Witness

Senior Member
Mar 18, 2004
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#5
tink about it....if say u are walking and ya lens bump onto a branch.....instead of the front element getting hit, it filter will take the damage instead.....more worth it to pay for a new filter than a new lens rite..
 

erictan8888

Senior Member
Nov 9, 2004
2,883
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Singapore
#6
so can give me a rough idea how much a UV filter cost?
Nikon UV filter price vs Hoya UV filter price?

also, what kind of UV filter is recommended, or should i say, what types of UV filters are available?

thx
 

Witness

Senior Member
Mar 18, 2004
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#7
nikon filter is good....haha... b+w is cool too...for me, i use hoya filters.... too expensive to buy the nikon or b+w filters for my lenses which are 77mm thread...

try to get those tt are glass ... not the cheaper plastic kind....
 

espn

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#8
Nikon L37Cs do not have a size for 67mm, they only come in 52, 62, 72, 77mm. ($30-$120)

B+W I just sold 3 during the last MO $68 ea.

I still have 8 pieces of Hoya 67mm going at $29 ea.
 

Tetsuhiko

New Member
Nov 1, 2004
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Hougang
#15
how much does the hoya uv filter cost for FZ20? i was quoted $60(can't rmb) at AP with the cam bundle($980)..but after reading a few post..like the most 30++..so a little bit confused...

why the uncle quote me $60? is it because he's selling me different hoya quality?
 

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