fotodiox grad ND filters

I'm in the market for a grad ND filter to help out with some sunset/sunrise shots and I'm alittle cheap little broke right now. saw some grad ND filters from fotodiox on ebay that I was wondering about and if they are any good as I don't really want to spend the 50bucks for a 58mm filter from tiffen/hoya/B&W as these are only 20 bucks shipped.

would there be any reduction in quality using on of these? does anyone maybe have any experience with them?

At least they're not round screw-ins. You don't want screw-in grads; you need to be able to adjust where the transition falls to match your composition. I suspect that "organic glass" is the same resin Cokin and most of the other makers of rectangular grads use; I don't know about this brand in particular though. I use the (not cheap) Singh Ray grads.

it seems to be either that or sunpak or EOC which I know little about also

but here is the link at least for the ebay ad for the photodiox.
http://cgi.ebay.com …3A12&_trksid=p3​286.c0.m14

the other question I haven is does anyone know a decent telecovertor that might be used on a 58mm ring?
and what is the point of a reverse macro ring?

Don't get that. It's a screw-in, like Tiffen, Hoya or B+W make. You can't adjust where the transition falls, so you won't be able to compose your picture like you want; you'll have to settle for what the filter will let you get.

Fotodiox makes rectangular filters as well. Used with a Cokin P holder, you'll be able to compose as you want and put the transition where you need it.

A "reverse macro ring" lets you use a good camera lens as a "close-up" or "macro" accessory lens; it threads onto the front of your main lens and another lens so they're facing fron t to front and you can then get a close-up picture with a very highly-corrected optic.

how would that work with if you need to adjust it at an angle rather then just straight top to bottom drag? I'm assuming with that you can just put the screw part in to where it angles the holder.

the other question is how would you make the adjustment for lifting/lowering the the filter?

The Cokin P holder snaps onto a 58 mm (or other sizes down to at least 49 mm and up to 82 mm) adapter ring and will rotate around that. It has rails on the side that the filter can slide up and down in; there are spring clips to keep the filter where you slide it to. So you can put the transition exactly where you want it. I use the Cokin P holder with my grads.

I love my Cokin!. With the P holder, I can use the same filter with my 3 lens.

I just ordered this fotodiox screw in grad filter - I'll report back when I test it.