Newbie's 1st post

[Diluted]

welcome to cs

 

[naruto4836]

welcome to cs

Hi , thank you.

 

[naruto4836]

IMG_3250 by naruto4836, on Flickr

Hi everyone, need some help here.

I took this pic at 18mm on my kit lens EFS 18~135 with triport , without lens hood. It is quite clear that there are horizontal distortion (at the water line both edges are wraping upwards compared to the middle of the pic . Is this normal or there are defects on my copy ?

Thanks.

Best Regards
Naruto.

 

[Irvine]

Hi everyone, need some help here.

I took this pic at 18mm on my kit lens EFS 18~135 with triport , without lens hood. It is quite clear that there are horizontal distortion (at the water line both edges are wraping upwards compared to the middle of the pic . Is this normal or there are defects on my copy ?

Thanks.

Best Regards
Naruto.

it's normal to have lenses wif distortion. u shld read up these for further understanding.

http://en.wikipedia.org/wiki/Distortion_(optics)
http://www.dxo.com/us/photo/dxo_optics_pro/optics_geometry_corrections/distortion

u can also see the analysis photozone did on the same lens u have: http://www.photozone.de/canon-eos/462-canon_18135_3556is?start=1

 

[naruto4836]

it's normal to have lenses wif distortion. u shld read up these for further understanding.

http://en.wikipedia.org/wiki/Distortion_(optics)
http://www.dxo.com/us/photo/dxo_optics_pro/optics_geometry_corrections/distortion

u can also see the analysis photozone did on the same lens u have: http://www.photozone.de/canon-eos/462-canon_18135_3556is?start=1

Hi Ivrive,

Thank you for the reply.
Guess I will have to use F5.6 @ 18mm to avoid this problem.

Learnt something new today.

Cheers

Naruto

 

[Irvine]

Hi Ivrive,

Thank you for the reply.
Guess I will have to use F5.6 @ 18mm to avoid this problem.

Learnt something new today.

Cheers

Naruto

welcome

btw.. changing the aperture size wun solve the problem. barrel/pincushion distortions can only be fixed via photoshop's lens correction profiles.

 

[naruto4836]

welcome

btw.. changing the aperture size wun solve the problem. barrel/pincushion distortions can only be fixed via photoshop's lens correction profiles.

Hi Irvine,

Thank you for the pointers.

guess have to live with the distortion for now.... fix it later when I purchase the software.


Cheers:bsmilie: