I have a bunch of filters for my 28-135mm lens with a 72 mm thread, but I've just bought a 77mm Sigma 10-20mm lens (which I love!) Given it's a wide angle lens, is it advisable that I buy a new set of filters or can I use a step down? Any help would be well appreciated!
2006-09-27 17:09:52 · 4 answers · asked by shahlordsaway 2 in Consumer Electronics ➔ Cameras
The suggestion to shoot a photo by holding a 72mm filter in place and see what happens is a good one. You'll probably see vignetting or dark corners on your photo, esp. if you take a photo of a white wall or blue sky.
In a pinch, you can normally use step down rings without problems on a telephoto lens, since their angle of wide is quite narrow. But I'd be hesitant to use them on a wide-angle, especially an extreme wide angle like a 10-20mm. If you are going to crop so don't mind some vignetting then maybe it doesn't matter, but then why use such a wide-angle lens in the first place?
BTW, you probably don't need a whole new set of filters. Some filters like polarizers aren't as useful on ultra wide angles (they're difficult to use, and give a weird looking sky that most people don't like). I'm not a big filter user, but I have a set for my most used lenses, and improvise with Cokin-Ps - the adapter rings are relatively cheap, but sometimes I just hold the filter up against the lens! LOL....
2006-09-28 04:10:09 · answer #1 · answered by barrabe 3 · 0⤊ 0⤋
OK, you've confused me. If the filter size is larger than the thread mount on the front of the lens, then a step up/down ring is fine... But a smaller thread than the lens is designed for (77mm->72mm) would just result in unsightly vignetting around the edges, especially with a wide-angle lens!
Now depending upon your model of Rebel, the smaller than full-frame CCD might eliminate those areas of the lens from being used, so you'd be ok. If the Rebel XT has a 1.6 focal length multipler, I suspect you'd be ok. Check with a camera shop to be sure- at the very least, attach the ring and see if you get dark borders...
2006-09-27 17:49:23 · answer #2 · answered by C-Man 7 · 0⤊ 0⤋
Put the new lens on your camera and just hand-hold a filter in place sort of centered over the lens. Take a picture of anything at all and just look in the monitor. You probably won't like what you see.
2006-09-27 18:46:47 · answer #3 · answered by Picture Taker 7 · 1⤊ 0⤋
I dont think it will work. I think you will loose some of the picture, specially on the wider side. It does nt hurt to experiment but make sure when you hold the filter that your fingers do not pbscure the view.
2006-09-28 07:46:53 · answer #4 · answered by Rustom T 3 · 0⤊ 0⤋