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Ok -I was wondering when people use a CPL filter and they already have a UV filter on the lens, do the screw the filter straight over this filter or take the UV off and put it just on the lens.

I have done both on my film camera, but was wondering what the general consensus is?.

Georgie,

I would think there are probably two schools of thought on this. Firstly, for every bit of glass you screw on the front of a lens there is going to be some (albeit small) loss of quality and amount of light reaching the sensor (or film). However, since most of us use a UV filter to protect the lens; the more times it is taken on and off the greater chance of dirtying or damaging the front element.

I'd be interested to hear others thoughts.

Cheers
Peter

Hi Gerogie, hi Boxerboy,

If you stack filters onto the lens, you may experience vignetting.
I had the UV and a CPL filter on the kit lens and vignetting occurred.
I was very little, I could hardly see it in the viewfinder but definately on the monitor.
This can be a trap for the unaware.

HTH

Cheers
CD

In my experience the vignetting only occurs at the lower focal ranges. Correct me if I'm wrong.

I have had vignetting using cpl over uv on 24/120 ed on f70 camera.

Haven't tried it on d70?

Speaking of cpl, on recent trip to Tassie I used the cpl a lot and ocassionaly noticed through the viewfinder what seemed like the effect of using a very weak warming filter, (slight colour change?) in certain light. not the normal cpl change to sky, water etc.

I never noticed this in the past when using film.

Is this a digital thing, my imagination or a dodgey filter ?

Rick.

On the kit lens, using standard thickness Hoya's, it does vignette. Quite heavily and noticeably. From 18mm to around 28 or 30mm mark. I would not recommend stacking filters.

I like Wile_E's take on filters however: "I don't know what [a UV] filter does, so I keep it off". Heed his advice.

The only way you can try it as use the Hoya Super HMC Pro1, 3mm thin. 2 of them are 6mm, equal 01 standard filter (5mm).
The standard filter is 5mm so stack orther CPL on the UV, then it will become 10mm thick

I have never a CPL on a UV filter before. Even though I own a thin style filter I think that it may vignette on a wide angle lense.

huynhie wrote:I have never a CPL on a UV filter before. Even though I own a thin style filter I think that it may vignette on a wide angle lense.

Yes, it's.

Thanks for the info everyone - looks like stacking is not the way to go. I must admit that I am lazy and probably wont use the UV filter much.

OT - does anyone know where I can get some step up/down ring adapters??? Any in Brisbane or online?

georgie wrote:Thanks for the info everyone - looks like stacking is not the way to go. I must admit that I am lazy and probably wont use the UV filter much.

OT - does anyone know where I can get some step up/down ring adapters??? Any in Brisbane or online?

I don't use the UV if I do the real shooting, but always has it on my lenses most of the time in transit or storage! In the way of handle the lens, your hands or finger will touch the front glass and you'll have to clean it all the time, it's not easy to get all the dirt out of the lens by wiping or cleaning it, if you do in the wrong way, wrong cleaning solution, then the multicoated on the glass will be coming off and

georgie wrote:Thanks for the info everyone - looks like stacking is not the way to go. I must admit that I am lazy and probably wont use the UV filter much.

OT - does anyone know where I can get some step up/down ring adapters??? Any in Brisbane or online?

georgie... photocontinental has step down rings if you 'need' to go to an actual store.

regarding stacking... i'd take the uv off.... remember, the more glass you put on the lens, the more flare you will introduce.