Filters on the A1

[ndroo-]

Anyone using 49mm UV/cir pol filters on their A1? Any vignetting as claimed by some ppl? If no, which brand are you using? Are you using any step ups?

[sulhan]

Hi Ndroo....

Right this very moment...a 49mm Kenko MC Skyllight (1B) is stuck on my cam.
no special filter.....

No vignetting .....

Rgds....

What you could do is when u get your cam.....bring it doen to the shop and test a few shots....with the filter....b4 buying...


rgds,
me

[ndroo-]

Originally Posted by sulhan Hi Ndroo.... Right this very moment...a 49mm Kenko MC Skyllight (1B) is stuck on my cam. no special filter..... No vignetting ..... Rgds.... What you could do is when u get your cam.....bring it doen to the shop and test a few shots....with the filter....b4 buying... rgds, me

thanks sulhan. read this wonderful advise of yours in some other threads too. but as a newbie, a bit worried i can't spot the problem

dats y askin here for any particular brand/model which the CS posse is already using ... then chances things will go wrong till be less

[frisky]

Originally Posted by ndroo thanks sulhan. read this wonderful advise of yours in some other threads too. but as a newbie, a bit worried i can't spot the problem dats y askin here for any particular brand/model which the CS posse is already using ... then chances things will go wrong till be less

As mentioned, Minolta UV works fine. From some accounts the worse is not at 28mm but rather around 35-50, I didn't verify this though.

[tbteng]

Sorry for my ignorance. What is a UV filter and what does it do on the A1 pls?

[ndroo-]

Originally Posted by tbteng Sorry for my ignorance. What is a UV filter and what does it do on the A1 pls?

I'm a newbie too and here are some info ... take from megapixel.net

"Skylight, Haze, or UV filters are the most common, and are often recommended in stores as inexpensive protection for an expensive lens. These filters are intended for use outdoor, and in fine weather.

Skylight and Haze filters are designed to reduce excessive bluishness by absorbing part of the UV radiation that can cause haze in outdoor photos. The effect of these filters is generally very subtle, and often the claims of their effectiveness are exaggerated.

Still, simple experimentation will reveal that they do lessen the "haze" effect that can become noticeable in outdoor photos, and that the blue component of the photo is attenuated slightly.

The UV filter, a close relative of the Haze and Skylight filters, is designed to absorb the ultraviolet part of the spectrum between 10nm and 400 nm. This type of filter is generally more effective at reducing the haziness cause by UV rays in distant landscapes than either Skylight, or Haze filters."

Check out the site for more info ...

http://www.megapixel.net/html/issueindex.php?lang=en

[chriszzz]

Originally Posted by frisky As mentioned, Minolta UV works fine. From some accounts the worse is not at 28mm but rather around 35-50, I didn't verify this though.

In summary, using just 1 filter does not vignette. Stacking filters ( ie, 2 or more filters ) will vignette. I've tried it, and that's my observation.

[frisky]

Originally Posted by chriszzz In summary, using just 1 filter does not vignette. Stacking filters ( ie, 2 or more filters ) will vignette. I've tried it, and that's my observation.

I just did a test on my 7i with a single Hoya UV (multicoated) filter.
No stacking of filter.

Verdict : The vignetting, though mild, can be observed from 28-50 mm, and is more obvious when you use a bigger aperture, and wider angle. So it is worst at 28, f/2.8.

However, it is not visible on the LCD, only visible when you display the picture on screen on the monitor. I believe it would not be noticible on prints either.

Unless you are looking for it, you probably won't notice it unless it is at its worst, 28mm f/2.8. Whether it is a issue or not depends on individual.