lf-photo.org.uk

Not sure if people are aware/as a matter of interest it would appear that Lee are in the process of releasing a new system of filters? These are a whopping 150mm x150mm and utilise a new type of holder. The system is designed for a NIkon wide angle zoom lens for "D" cameras
However, could this be further developed for Large Format users? Who knows!!
More details on Robert White's website - nice video explaining the system too!

That could be very useful. I have an Olympus 7-14mm ultra wide angle zoom lens for my Four Thirds E-3 DSLR, which cannot be used with any filters at the moment because of the fixed hood and the large hemisphere of glass poking out in front... The lens is not a fisheye type lens, so it would be possible to use it with 150mm hard grads.

http://www.olympus.co.uk/consumer/dslr_ ... _1_4_0.htm

Not forgetting I should still be able to offer my usual UKLFPG discount

Joanna Carter wrote:Not forgetting I should still be able to offer my usual UKLFPG discount

Even better!

Don't Lee already make filters in the 130mm cokin x-pro size?

I'm not sure how much use 150mm filters are going to be for LF use. Be a pretty niche market. How many lenses are there that would require such a big filter? I imagine not many in 4x5".

dave_whatever wrote:Don't Lee already make filters in the 130mm cokin x-pro size?

I'm not sure how much use 150mm filters are going to be for LF use. Be a pretty niche market. How many lenses are there that would require such a big filter? I imagine not many in 4x5".

Yes, Lee will make filters in any size. But, now they are making their own larger holders.

I possess the Schneider 72mm Super Angulon XL and could really have done with such a large holder instead of having to make do with the 130mm Cokin one. I have had occasion to require both polarising and grad filters on this lens and even the Cokin holder can give vignetting problems in some situations.

Time to reach for the blutack!

I must admit that the Lee holders are worlds ahead of cokin, when i went from a cokin p holder to Lee you could feel straight away it was a lot smoother and easier to use.

Do I need this? Can anybody tell me just how much vignetting I will get using the standard Lee holder and 86mm adapter ring on a Schneider 58mm XL with the 3b centre filter attached?

I wish they'd concentrate on getting their standard sized filters made so there's enough to go round and not months of waiting for them!

Nigels wrote:Do I need this? Can anybody tell me just how much vignetting I will get using the standard Lee holder and 86mm adapter ring on a Schneider 58mm XL with the 3b centre filter attached?

The main problem I have found with wide angle lenses and filters is not just vignetting but the increase in density as the angle from centre increases. In my opionion, this is where polyester filters can be useful, in that they are a lot thinner and can cause less darkening, but, in theory, could still cause some distortions.

Joanna Carter wrote:

Nigels wrote:Do I need this? Can anybody tell me just how much vignetting I will get using the standard Lee holder and 86mm adapter ring on a Schneider 58mm XL with the 3b centre filter attached?

The main problem I have found with wide angle lenses and filters is not just vignetting but the increase in density as the angle from centre increases. In my opionion, this is where polyester filters can be useful, in that they are a lot thinner and can cause less darkening, but, in theory, could still cause some distortions.

I'm not sure I understand how a thinner filter can reduce the darkening effect. Unless it has no thickness at all, light hitting at 45 degrees will still encounter sqrt(2) more material regardless of thickness. Just wondering if this is something you've seen directly or heard/read elsewhere? Having used polyester filters, they seem OK do cause problems when stacked (and scratch really badly).

Tim