Ken Diewert
June 4th, 2007, 01:00 PM
I just tried the Century WA .8 for the H1. The corners need to be cropped. Here's a jpeg. I'm supposed to use this again this afternoon, but if I need to crop the images after, then I not sure what the point of using this adapter.
Marty are you out there?
Thanks
Daniel Epstein
June 4th, 2007, 03:20 PM
Ken,
I am not sure why you are seeing cropping on the corners but there are a couple of things you should check. One: make sure you have the adapter all the way screwed on. It is a very tight tolerance to avoid vignetting. Two:check out the F stop you are working with. Sometimes issues show up if you are stopped down to a small aperature which don't show up at wider apertures. Try adding the Built in ND.
Ken Diewert
June 4th, 2007, 07:26 PM
Daniel,
Thanks. I did shoot with it this afternoon. I had my UV filter between the 20x and the .8.
I've now taken it off and it looks to have fixed the prob.
Thanks Again.
Daniel Epstein
June 4th, 2007, 07:32 PM
Ken,
Well I am sure the UV filter was the cause. By the way there should be a spacer ring with the Century Wide Angle so you don't actually rub the front of the 20X lens with the back of the Wide Angle.
Ken Diewert
June 4th, 2007, 11:05 PM
Daniel,
Yeah, I bought it on ebay, but made sure the ring was supplied. It's reassuring to know that that was the problem. I had to slightly crop the stuff I shot today, which kind of defeats the purpose of using a WA adapter, but I think I was still ahead of using the stock 20x.
Thanks again, if you hadn't mentioned the vignetting tolerance, I wouldn't have thought that the UV filter was the prob. Initially, I thought that my lens hood was not on properly, so I took it off and still had the problem.
Marty Hudzik
June 6th, 2007, 06:52 PM
Just saw this thread and can say that is not normal. I did have a problem one time with the wide angle where I was outside in daylight and I left the auto iris on with no ND filter. The camera stopped down to F16 or something crazy. I could not see it in the viewfinder but there some vignetting on the corners....not like yours where you can physically see the lens shade or filter ring. It was just a soft darkening like an effect.
After engaging the ND filter and letting the iris open up this went away.
Sorry I didn't see this at first....
Good Luck.