Vignette? - DPChallenge Forums

Canon 12x IS USM (S3 IS built-in Lens) -- 36-432mm (35mm EQ)

02/14/2008 11:26:20 PM · #1

So i just recently got a new camera (Pentex K10D) and love every minute with it. but i have noticed that my shots are coming out with more vignette then before. im shooting with the same lens i used to, just not on my old body (Pentax *istDL). any thoughts as to why this is happening?

-CW

GeneralE

Canon PowerShot S3 IS

02/15/2008 12:28:48 AM · #2

My guess is that the new sensor is physically larger, and the lens' projected image doesn't cover quite as much of it.

paddles

Canon EF-S 18-55mm f/3.5-5.6 II

Pentax FA 50mm f/1.4 AF

02/15/2008 05:36:37 AM · #3

Hmm, interesting. The explanation would make sense - but according to dpreview, the sensors are the same size. Haven't checked Pentax's spec sheets though.

I don't have any other good explanations to offer though.

Tez

Canon EOS-5D Mark II

Canon EF 85mm f/1.8 USM

02/15/2008 06:20:27 AM · #4

The sensors may well be the same size, but if one is further back/forward this might produce the vignette. It should go away with stepping down though.

surfdabbler

Canon EOS-5D

02/15/2008 06:47:22 AM · #5

Sounds odd! Did you get any new filters with your new body? UV filter? PL filter? These can add vignetting.

02/15/2008 08:22:30 AM · #6

Originally posted by Tez:

The sensors may well be the same size, but if one is further back/forward this might produce the vignette. It should go away with stepping down though.

stepping what down?

oh and no new filters.

could it have to do with shooting at 10 megapix instead of 6?

-CW

Tez

Canon EOS-5D Mark II

Canon EF 85mm f/1.8 USM

02/15/2008 08:26:11 AM · #7

increasing the aperture number, say from F3.5 to F8 = stepping down.

Resolution won't make a difference.

Canon EF-S 18-55mm f/3.5-5.6 II

02/15/2008 09:03:08 AM · #8

stopping down...ill give that a try, i was shooting at f22 the other night and still seemed to be doing it, but ill see if its less compared to f3.5

surfdabbler

Canon EOS-5D

02/16/2008 02:33:23 AM · #9

Hmm, vignetting should be well and truly gone by f22! It's normally only present wide open, and disappears with one or 2 stops of closure. Sounds very strange. Can you post some samples of what you are seeing?

Iraklis

Nikon D90

Nikon AF-S DX NIKKOR 18-200mm f/3.5-5.6G ED VR II

02/16/2008 03:23:26 AM · #10

Exucse my ignorance, what exactly is "Vignette"?

surfdabbler

Canon EOS-5D

Canon EF-S 18-55mm f/3.5-5.6 II

02/16/2008 04:25:45 AM · #11

Put simply, vignetting generally means the corners of the photo are darker than the centre.