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11-30-2007, 03:28 PM   #1
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With Uv and without Uv

guys i was testing my FA 50 mm 1.7 and comparing it with A 50 1.7. (probably my next threat )
i started shooting from f 1.7 to 9 and i noticed that i took photos with Uv filter. i removed the uv and started again... after comparing a and fa i compared fa 50 with uv and without uv...
just shocked!!!! with the filter imho contrast and sharpness suck!!!
i was thinking of having a multi-coated uv and i think it matters ? i think i should get one (not one for all my lenses) or i should not use this cheap cokin filter and shoot without it....

fa 50 mm 1.7 - a photoset on Flickr

under the photos i wrote the conditions....

so which uv would you recommend???
regards
halil

11-30-2007, 04:50 PM   #2
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QuoteOriginally posted by hll Quote
so which uv would you recommend???
None, and your photos show why.
11-30-2007, 07:05 PM   #3
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What cheap UV filter did you use? Never had a problem with the following:

B+W (newer versions now purportedly made by Hoya)
Heliopan,
Kenko Pro 1 Digital
11-30-2007, 11:15 PM   #4
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I am using kenko (hoya) pro1 digital CPL and protector and I did not notice any problem.
I will try to post samples in the evening.

11-30-2007, 11:23 PM   #5
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One more question in this matter.
Do I understand right that Protection series just protect from dust, and all the light waves, including UW, psses through it? While UW filter not only protects, but also blocks UW waves?
Or Protectors ALSO block UW spectre, and that's just another name?

If they are different, can anyone post pics to be able to protector with UW?
11-30-2007, 11:34 PM   #6
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In the protector series, all the spectrum passes through. In the web site, they say:

The ultimate in clear filters, the PROTECTOR will not affect the color balance or performance of your lenses in the slightest

http://www.kenko-tokina.co.jp/e/P.12_13.PDF

But of course they have coatings for flare, reflections etc.
12-01-2007, 12:38 AM   #7
hll
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it would be excellent to see some tests of heliopan, b+w or kenko in this thread. i mean comparing the lens results with Uvs and without UVs....
creampuff, my test was with cokin uv filter (i think cheapest model)
12-01-2007, 10:55 PM   #8
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What UV you had on your lens? The only UV that I have noticed to affect the actual image quality was a 15+ years old HOYA uncoated UV which looks like a diffuser. Those HMC, HMC Super & DMC that I have now pose zero effect on image quality. However, even the best coated filters still flare when the condition was right. But so long as they don't flare, they are fine.

12-02-2007, 05:23 AM   #9
hll
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as i said before, i used the "cokin" uv filter, the cheapest one....many users use such filters without knowing how bad they affect the picture quality... i knew that they deteriorate but i did not expect that much....
cheers
halil
12-02-2007, 05:40 AM   #10
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Cokin resin filters are bad alright. I used to have a pile of them. Not only they are prone to scratch, they flare badly too (afterall they are uncoated).
12-02-2007, 08:25 AM   #11
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UV always

I once did a shoot with out a UV for a Mens clothing line. All the browns turned out violet. With the UV they were perfect. You see some Flash heads may not be UV coated and as a result boas the colour balance. I always use UV filters. I always want to protect the front element. Most optical glass UV filters today are of excellent quality.

Ben
12-02-2007, 10:01 AM   #12
hll
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that was beneficial ben, thank you...
btw, what would you recommend as a Uv filter or what do you use?
thanx
halil
12-02-2007, 11:55 AM   #13
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Why I *always* use a UV filter!

http://www.pbase.com/jamesk8752/image/44149433.jpg

I dropped my FA 77 while trying to change lenses in the street. I had to remove the filter using a channel-lock pliers, but the lens was unscathed...

Regards, Jim
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