Re: zoom distortion

2004-03-18 Thread Andre Langevin
I'm curious what the gigantic 80-210/4.5 SMC-T lens could do! DJE Same normal zoom behaviour... I will check the 3.5 version tomorrow (K-mount, as long as the 4.5 but fat). 85-210mm to be exact. Andre I checked my 85-210mm f/3.5 and distorsion is noticably better corrected than in the 4.5 lens (

Re: zoom distortion

2004-03-17 Thread Andre Langevin
I'm curious what the gigantic 80-210/4.5 SMC-T lens could do! DJE Same normal zoom behaviour... I will check the 3.5 version tomorrow (K-mount, as long as the 4.5 but fat). 85-210mm to be exact. Andre

Re: zoom distortion

2004-03-17 Thread Keith Whaley
Hi William, Thanks for that observation. All good info to put away for reference... keith whaley William Robb wrote: - Original Message - From: "Keith Whaley" Subject: Re: zoom distortion Are you sure about that ? If I were a pro with a very expensive Canon kit, for ins

Re: zoom distortion

2004-03-17 Thread Kostas Kavoussanakis
On Wed, 17 Mar 2004, William Robb wrote: > Both the EF 28-70 f/2.8 and 70 (80) - 200 f/2.8 suffer from barrel > distortion. In addition, the 28-70 has bad veiling flare and poor > contrast. > > This is just judging the lens from printing negatives that came our > from behind those lenses. My daug

Re: zoom distortion

2004-03-17 Thread William Robb
- Original Message - From: "Keith Whaley" Subject: Re: zoom distortion > Are you sure about that ? > If I were a pro with a very expensive Canon kit, for instance, I'd > really get upset with Canon if I found distortion at one end or the other. > That's

Re: zoom distortion

2004-03-17 Thread graywolf
AFAIK, no asymmetrical lens (all 35mm lenses I know of) is going to be distortion free. Most high-end lenses are corrected to within about 1-2% these days, but that is still visible to the naked eye if you look closely. Zooms are the most difficult to correct (usually barrel at the wide end, pin

zoom distortion

2004-03-16 Thread edwin
> I've bought the famous Pentax Zoom A 70/210 4 but i'm a little bit > disapointed because there are > pincushion distortions. > When I take a picture, for exemple, of a painting, the borders are deformed. > > Is it normal ? For me it's important because I do a lot of architectural > photos. As I