Go Back   Steve's Digicams Forums > Digital Cameras (Point and Shoot) > Panasonic / Leica

Reply
 
Thread Tools Search this Thread
Old Sep 24, 2011, 12:23 PM   #1
Junior Member
 
Join Date: Sep 2006
Posts: 29
Default DMC-ZS7 distortion problem??

I am getting really frustrated. Am I doing something wrong when taking pictures? All of my photos look crooked, buildings, frames, objects..

take a look at the picture
http://dl.dropbox.com/u/17243958/Distortion.JPG

My roomate says it is because pictures are shot with low foca llength -- 10 or less. Is that so? Or maybe I need to tweak some settings? He says the way to compensate for the problem is to shoot with at least 18 mm focal length (i.e. always zoom on an object). So I took a few test shots and it turns out I can reach 18mm or high only if I zoom to at least 5x.

If this is the only thing I can do, then it really sucks! I need to go so far away in order to get whole buildings with at least 5x zoom. Also when you zoom, image stabilizer has to work higher, cannot shoot with F 3.3, etc.

Do you have any advice or can you confirm this is an issue with the camera?
KurtCocain is offline   Reply With Quote
Sponsored Links
Old Sep 25, 2011, 9:52 AM   #2
Senior Member
 
Join Date: Aug 2010
Posts: 123
Default



crooked ? where ? sorry my eyes are not that sensitive for these type of errors .... but this image needs slight rotation though.

zs7 focal length ranges 25 - 300mm (35mm equiv.). so, 1x zoom, being wide angle, could be slight bendy, but there should not be such major issues for 1.5x and above.

however, if this is a lens specific issue with zs7, i don't know .....

Last edited by flyhigh; Sep 25, 2011 at 5:39 PM.
flyhigh is offline   Reply With Quote
Old Sep 25, 2011, 10:42 AM   #3
Junior Member
 
Join Date: Sep 2006
Posts: 29
Default

Look at the left and right sides of the Duome building. Then compare it with the straight lines of the side of the picture. You see -- they are not parallel.
KurtCocain is offline   Reply With Quote
Old Sep 25, 2011, 11:31 AM   #4
Member
 
vivek chandrashekar's Avatar
 
Join Date: May 2011
Posts: 66
Default

ya that is common when used in the widest angle..if u need perfect pic then move back more and zoom a bit
__________________
In love with Panasonic Lumix DMC-FZ100 !!
vivek chandrashekar is offline   Reply With Quote
Old Sep 25, 2011, 11:56 AM   #5
Senior Member
 
Join Date: Aug 2010
Posts: 123
Default

Quote:
Originally Posted by KurtCocain View Post
Look at the left and right sides of the Duome building. Then compare it with the straight lines of the side of the picture. You see -- they are not parallel.
ah, it's not lens distortion, its because of the camera vertical tilt & it's position at the ground level, when you took the photograph. the lower part covered more of building and the upper part covered less.

it's a normal case, like when you stand in between a track of a rail line, they seem to merge in infinity. this type of optical case is called something in physics, i forgot whats its called.

anyways, its not a zs7 case, any other normal camera will behave the same from that position and tilt.

check this pic.
flyhigh is offline   Reply With Quote
Old Sep 25, 2011, 4:13 PM   #6
Senior Member
 
Square one's Avatar
 
Join Date: Jan 2011
Posts: 1,172
Default

Hi flyhigh

As you say the right and left hand walls of the building are converging in because the camera is not perfectly vertical to the building, it looks a little worse then it really is because the horizontal level is slightly out.

Camera lenses can also cause similar effects with barrel distortion. Door frames show this up well.
__________________
FZ45
Square one is offline   Reply With Quote
Old Sep 25, 2011, 4:13 PM   #7
Senior Member
 
Join Date: May 2010
Location: athens greece
Posts: 322
Default

You can fix the photograph using the "skew" tool, in photoshop. Easily.
a.
Attached Images
 
__________________
panasonic fz38, no lenses so far...

Last edited by kibaris; Sep 25, 2011 at 4:16 PM.
kibaris is offline   Reply With Quote
Old Sep 25, 2011, 4:14 PM   #8
Junior Member
 
Join Date: Sep 2006
Posts: 29
Default

OK, photo I gave as an example probably has the shooting angle issues as well. But overall, all my photos from my recent trip, when you look at the buildings/lines, they are all crooked and tilted. As if I cannot shoot straight. Even today I enabled the grid on the LCD screen and I can see, even the ophoto I am trying to take that it does not line up with the grid (i was using a tripod!)..

I think it is due to the wide lens.... and it kind of sucks, because I need to touch almost every single picture i shoot. This takes a lot of time
KurtCocain is offline   Reply With Quote
Old Sep 25, 2011, 5:11 PM   #9
Senior Member
 
Join Date: Aug 2010
Posts: 123
Default

Quote:
Originally Posted by Square one View Post
Hi flyhigh

As you say the right and left hand walls of the building are converging in because the camera is not perfectly vertical to the building, it looks a little worse then it really is because the horizontal level is slightly out.

Camera lenses can also cause similar effects with barrel distortion. Door frames show this up well.
Quote:
Originally Posted by KurtCocain View Post
OK, photo I gave as an example probably has the shooting angle issues as well. But overall, all my photos from my recent trip, when you look at the buildings/lines, they are all crooked and tilted. As if I cannot shoot straight. Even today I enabled the grid on the LCD screen and I can see, even the ophoto I am trying to take that it does not line up with the grid (i was using a tripod!)..

I think it is due to the wide lens.... and it kind of sucks, because I need to touch almost every single picture i shoot. This takes a lot of time
thanks square one, for explaining up the barrel distortion. me being an amateur user don't have much experience with many lenses.

KurtCocain, zs7 should not show wide angle distortion above 1.5x zoom. u better try with a door frame as squareone suggested... place cam vertically, just at the center height to a door-frame ( should be a=b in the picture below).

if it still shows same effect, check other sample/user zs7 images from web..... then u may consider a replacement / servicing accordingly.

__________________
FZ35

Last edited by flyhigh; Sep 25, 2011 at 5:40 PM.
flyhigh is offline   Reply With Quote
Old Sep 26, 2011, 5:15 PM   #10
Junior Member
 
Join Date: Sep 2006
Posts: 29
Default

Well, it seems like it is the ZS7... see pictures from this post:

http://forums.dpreview.com/forums/re...0&changemode=1

That is, it should not be just my camera.. I think. I am going to do the door frame test. One thing I have notices, when I do not shoot in landscape (horizontally) the issue is not there. Which means the fish eye thing is horizontal.
KurtCocain is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 1:50 PM.