Filter for canon lens (1 Viewer)

andrew_chick · Mar 21, 2007

Hi

I have just brought a new Canon lens. To protect my investment should I also invest in a filter to protect the lens?

It requires a 77mm filter, can someone confirm, that I don't need to but a Canon filter, and that a generic UV Skylight filter would be fine?

Thanks

Andrew

postcardcv · Mar 21, 2007

any generic 77mm filter should fit your lens... whether using a filter is a good plan is a subbject that has been debated many times on BF. Some feel that a filter has a noticeably detrimental effect on image quality, while others feel protecting the lens is vital. One thing that I think the majority would agree on is that if you do decide to fit a filter make sure you buy a good quality one and not a cheap one... no point spending all that money on a Canon lens and then putting cheap glass in front of it!

Macswede · Mar 21, 2007

I thought of buying a Canon filter for my 100-440mm but was a bit discouraged when I saw how expensive it was.
Graham

baillieswells · Mar 21, 2007

andrew_chick said:
Hi

I have just brought a new Canon lens. To protect my investment should I also invest in a filter to protect the lens?

It requires a 77mm filter, can someone confirm, that I don't need to but a Canon filter, and that a generic UV Skylight filter would be fine?

Thanks

Andrew

I normally use B+W multicoated filters on my Canon lenses, though on a Sigma lens I have used a Sigma multicoated filter. None of them would appear to degrade the image. I used to use Hoya filters in my film days,(before I had heard of B+W) however, they are a real devil to keep clean without smudging, particularly if you get a drop of rain on them.

Roy C · Mar 21, 2007

If you are going to get a filter I would suggest a decent one. I bought a 77mm HOYA PRO1 Digital filter - strange thing is that it is ok on the 17-40 lens with little or no image deterioration but the same filter on my 400mm f5.6 lens shows definate IQ deterioration. Needless to say I keep it on the 17-40 but do not use it on the 400mm prime.

Malcolm Stewart · Mar 22, 2007

Roy C said:
If you are going to get a filter I would suggest a decent one. I bought a 77mm HOYA PRO1 Digital filter - strange thing is that it is ok on the 17-40 lens with little or no image deterioration but the same filter on my 400mm f5.6 lens shows definate IQ deterioration. Needless to say I keep it on the 17-40 but do not use it on the 400mm prime.

Reminds me of a poor filter on my first decent 300 f4.5 (a Minolta MD lens), many years ago. With the filter in place, I could not focus my new lens on objects at infinity, whilst there was no problem with the bare lens. My "filter" was behaving like a long focus close-up lens, and with the 300 f4.5 its depth of field at long distances was short enough to show that I had a problem. In my case, changing to a Hoya HMC filter cured the problem.

RJL2005 · Mar 22, 2007

I am on my second Hoya filter for my 400 5.6L. I think there is a small loss in quality but this may also be down to my technique! However the first filter stopped a nasty scratch when I caught a stray length of barbed wire while climbing over a style (this was even with the hood extended). I now use the filter when out in roughish terrain and remove for 'safer' locations.

Hope this helps

Rhod

Filter for canon lens (1 Viewer)

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