UV filters :( Check this out.

[Stephen]

[lumix]

Re: UV filters Check this out.

So you have now got your self a nice soft focus filter. Some people have to pay good money for them. Whats that saying? you get out for nout.

[Stephen]

Re: UV filters Check this out.

So you have now got your self a nice soft focus filter. Some people have to pay good money for them. Whats that saying? you get out for nout.

Ha!! Soft focus!! Its more like looking through the bottom of a milk bottle Anyway I've sent it to Jim for him to have a play with. If anyone else has a 77mm thread they can have it next

[Stephen]

Re: UV filters Check this out.

As an aside, does anyone know what the difference is between a UV(N) and a UV(O) filter is?

[Pops]

Re: UV filters Check this out.

Indeed it is revealing Dennis. At present I don't have any filters on my lenses, and it is essentially for this reason. All my lenses use a 77mm thread and to buy a quality filter of that size is rather pricey. Don't think because its Hoya you are OK either, because there are different qualities of Hoya filters and the best ones are very expensive. However I did once read of this phenomena with some UV filters, so took the one I had off, and I've never used one since. This is not to say that you or anyone else should have a noticeable difference in image quality.

I've found though that they don't stop dust on the lens, you still have to dust the front element from time to time. Also I find using a lens hood protects the lens from bumps etc. The same principle applies to the likes of Cokin type filters. When I wanted a ND Grad filter set, I bought Lee. I just had no confidence in the much cheaper Cokin ones.

Got this far with the thread and must say I am totally surprised. That's a very interesting experiment.
Tomorrow I shall be taking some shots with and without the filter.

[Stephen]

Re: UV filters Check this out.

Got this far with the thread and must say I am totally surprised. That's a very interesting experiment.
Tomorrow I shall be taking some shots with and without the filter.

Don't panic Pops I don't think you have a problem seeing your latest two. However it could still be worth an experiment.

[cowcrzy06]

Re: UV filters Check this out.

Steven,

This little note came on the back of the Canon UV Haze filter that came with my camera;

The UV Filter is used to reduce atmospheric haze by absorbing
ultraviolet light.It produces Clearer scenic photographs, but has
no effect on INDOOR photos. Also serves as an effective lens
protector.Filter factor of 1=0 stop exposure adjustment.

I will definitely do both indoor and outdoor tests tommorw!Oh and also are there any other filters that say this?

[Pops]

Re: UV filters Check this out.

Don't panic Pops I don't think you have a problem seeing your latest two. However it could still be worth an experiment.

Should maybe have mentioned that while the Bluetit was taken with the lens the blossom was taken with a Sigma 55mm macro. This is the only macro lens I have and I'm not to happy with it. I seem to bin more than I keep and yet am always careful when setting up a shot and always use MF + shutter release.

[Jim]

Re: UV filters Check this out.

As an aside, does anyone know what the difference is between a UV(N) and a UV(O) filter is?

Well... A long long time ago, in a thingy far far away, No. I won't do that.

'Tis said, but I have not been able to confirm this, that Hoya, (who are trying to become Pentax, one of the most respected names in photog... stop it Jim! You'll only make trouble!)

All right. I have been told that Hoya produce 2 types of glass for filters. (did you know that there are only 3, I think, producers of optical glass in the world? 2 are Japanese, 1 of which is Hoya.) (Those numbers might not be correct, it's Snacerre tonight. )

Oh yes.
(n) is produced as a cheapie line for the Asian market, and is inferior glass. (Some say not (n)ot optical.)

(o) is for the Western World, for the round eyes who demand (o)ptical glass.

I think it may well be rubbish, but that's what I've always been led to believe.
Ask Yoshi. He might have some more believable information. (Some say he is Mr. Hoya! )

I shall mail filters Northward on Monday.

Jim

[ni1yak]

Re: UV filters Check this out.

Using a Hoya 77mm uv(0) pro1 digital filter and is does degrade the image. Using a D200 17/55 2.8 Nikkor shooting RAW with no post processing, the image at 100% shot without the filter is sharper. I will have to do tests with my Nikon NC.filter.

Pete

[Stephen]

Re: UV filters Check this out.

Using a Hoya 77mm uv(0) pro1 digital filter and is does degrade the image. Using a D200 17/55 2.8 Nikkor shooting RAW with no post processing, the image at 100% shot without the filter is sharper. I will have to do tests with my Nikon NC.filter.

Pete

Hi Pete, this is interesting stuff, I personally would not have thought it. I'll look forward to any further findings you may have

[ni1yak]

Re: UV filters Check this out.

Well, did more tests with Nikon NC on same lens - no difference on or off. Tried same thing with my 70-200, 18-70 and 50 all with Nikon NC filters and once again no difference.Looks like the Hoya is scrap -shame cos it was'nt a cheepie.

Regards
Pete

[Stephen]

Re: UV filters Check this out.

Well, did more tests with Nikon NC on same lens - no difference on or off. Tried same thing with my 70-200, 18-70 and 50 all with Nikon NC filters and once again no difference.Looks like the Hoya is scrap -shame cos it was'nt a cheepie.

Regards
Pete

Thanks for that Pete, you may have spotted I tried it with a Hoya HMC UV(O) and I couldn't spot a difference, though I didn't take it to pixel level

Jims sending me one of his Nikon filters to try so it will be interesting to see if I can see any difference with the Hoya.

Any chance you could post any with/without images of your Hoya on a lens?

[DTD]

Re: UV filters Check this out.

I've always been a bit paranoid about scratching my front element. Have written off a couple of filters, so don't think (in my clumsy case) I'm being too paranoid.
Have a 67mm Hoya Pro-1 Protector (i.e. not a skylight or UV) on my Olympus 14-54mm and a cheapo Hoya Skylight on the Oly 40-150mm.
39mm B&W UV on Summicron 50mm.

Always used a lens hood.

[Jim]

Re: UV filters Check this out.

Hi Stephen.
Your filter arrived today, thanks.
I had packed a couple of filters to send you and was to mail them today, BUT! SWMBO decided that we were going to RHS Rosemoor today, which we did, of course.
So I had to unpack the filters:-).
Never mind. |I'll get them off to you tomorrow.
Jim