filter holder/system for wide angle/90mm lens on 4x5

[GoldSpanner]

Hi Guys! My first post!

Looking to buy my first 4x5 soon (probably will be a Toyo 45a), and have mostly figured it all out apart from which filter system I can use.
I'll be using some sort of 90mm lens, so presumably screw-in filters will risk vignetting?
I'll need to use and ND and an orange/red simultaneously, so will some sort of square filter system be the best to look at?
Hitech make this system, which looks like the right sort of thing - anyone used it?

Sorry if this question has been asked before, but I did do a search for it and came up with nothing specific.

Thanks!

Alex

[Bob Salomon]

Before you decide see first if you will want a center filter to control the fall-off. If so then you will need a larger filter holder to clear the CF.

[Eric Woodbury]

Screw-in filters shouldn't vignette if you stop down just a little. I use 4x4 gels (polyester) in cardboard frames and hold them by hand or with that holder that uses a rubber band (Lee Gel Snap). Some folks tape gels to the rear of the lens inside the camera, thus preventing wind issues and sun glints.

[GoldSpanner]

Thanks for the replies!

Bob: I was worried someone would say that! I'm gonna get the largest aperture 90mm I can (4.5 if I'm correct?), so hopefully that should minimise fall off. I can deal with a little vignetting, and will be stopped down most or all of the time. On the other hand, I'll definitely be using the movements, so perhaps a CF will be needed. No doubt I'll have to decide before picking a filter system.

Eric: You might be right, and if I were to get screw-ins, they'd definitely be of the slim-ring variety. However, if I'm correct, a 4.5/90mm has a filter thread of 82mm, and most filters aren't made any larger (at the least ones I'd like to use), otherwise I'd get an adapter for a larger size. Would be good to hear from someone who has stacked a couple of rings on this type of lens.

[Bob Salomon]

Thanks for the replies!

Bob: I was worried someone would say that! I'm gonna get the largest aperture 90mm I can (4.5 if I'm correct?), so hopefully that should minimise fall off. I can deal with a little vignetting, and will be stopped down most or all of the time. On the other hand, I'll definitely be using the movements, so perhaps a CF will be needed. No doubt I'll have to decide before picking a filter system.

Eric: You might be right, and if I were to get screw-ins, they'd definitely be of the slim-ring variety. However, if I'm correct, a 4.5/90mm has a filter thread of 82mm, and most filters aren't made any larger (at the least ones I'd like to use), otherwise I'd get an adapter for a larger size. Would be good to hear from someone who has stacked a couple of rings on this type of lens.

The faster lens will still have about as much fall-off as the slower one. But since the faster lens covers a larger circle it may not be as noticeable, unless you use rise fall and move off the center of the circle.

[Ian Gordon Bilson]

You could also consider jerry-rigging something to fit on the rear of the lens..no flare/size problems,and very flexible on large format.

[Bob Salomon]

You could also consider jerry-rigging something to fit on the rear of the lens..no flare/size problems,and very flexible on large format.

Only drawback is that rear mounted filters will degrade the image. This lens was made for front mount filters for optimal performance.

[vinny]

I use the Lee system (flexible compendium shade with 2 slots) for all of my lenses including the 90mm nikkor 4.5. Nikon didn't make a center filter for this lens.
The gadget you linked to looks quite hokey, I'd avoid it. If you're not going to get a Lee, get a lee compatible holder off ebay.

[Corran]

FYI, on many occasions I've used a red filter, polarizer, AND a Lee holder w/ GND filter on my Nikkor 90mm f/8 with no vignetting - even has a bit of movement left, but not much.

Don't worry too much about that. And forget the f/4.5 unless you really need it, like if you are working indoors. The smaller Nikkor (and Schneider equivalent) use 67mm filters. Same-ish image circle.

[Old-N-Feeble]

If you decide to try filters on the rear of the lens then consider gels. Those won't cause focus shift nor image degradation.