Unwanted Fisheye at angle: Hi UHH forum I have been trying out a few of my lenses on my D7100. I have noticed that I seem to get a fisheye affect between 10 and 17mm if I take a shot...

moggey Loc: Salisbury, United Kigdom

Hi UHH forum

I have been trying out a few of my lenses on my D7100.

I have noticed that I seem to get a fisheye affect between 10 and 17mm if I take a shot in portrait, tall buildings seem distorted.

I've heard there's a way to correct this in Photoshop.

I have Elements 11.

Any ideas guys ?

twowindsbear

post some pix??

Joecosentino Loc: Whitesboro, New York

Portraits will always look wrong taken wide angle. Best shot between 50 and 150 or so

CHG_CANON Loc: the Windy City

I don't know the corrections in photoshop. For ideas on wide angles, check out this link if you haven't visited already:

http://www.kenrockwell.com/tech/how-to-use-ultra-wide-lenses.htm

GoofyNewfie Loc: Kansas City

Joecosentino wrote:

Portraits will always look wrong taken wide angle. Best shot between 50 and 150 or so

" Portrait" in this case refers to camera orientation, not a photo of a person.

I suspect the OP is getting "keystoning", where the top of the building is smaller than the bottom, caused by tilting the camera up.
In Photoshop CS 6 (Elements may be similar) open the image and go onto Filters/Lens correction and find the Custom tab. What you need is the "Transform" /Vertical Perspective slider. That correction is also available in Adobe Camera Raw under the Lens Corrections tab.

http://www.photographymad.com/pages/view/fixing-the-keystone-effect-using-photoshop

brucewells Loc: Central Kentucky

moggey wrote:

Hi UHH forum

I have been trying out a few of my lenses on my D7100.

I have noticed that I seem to get a fisheye affect between 10 and 17mm if I take a shot in portrait, tall buildings seem distorted.

I've heard there's a way to correct this in Photoshop.

I have Elements 11.

Any ideas guys ?

When shooting with an extremely wide lens, it is best to hold the camera level (front to rear) to minimize distortion.

moggey Loc: Salisbury, United Kigdom

Hi I have attached 2 pictures , 1 landscape and one portrait.

As you can see both tilt inwards, I am trying to fit as much of Cathedral in as possible and because the grounds that surround it I have to use a wide angle,

Maybe as Goofy says I need to use "Transform" /Vertical Perspective slider to straighten up the image.

Many thanks for you replies

GoofyNewfie Loc: Kansas City

moggey wrote:

Hi I have attached 2 pictures , 1 landscape and one portrait.

As you can see both tilt inwards, I am trying to fit as much of Cathedral in as possible and because the grounds that surround it I have to use a wide angle,

Maybe as Goofy says I need to use "Transform" /Vertical Perspective slider to straighten up the image.

Many thanks for you replies

That will fix it, but in "transforming" the image you will be losing some of the building. Hope you didn't frame it as tight in these shots you posted. One of those "Hindsight is 20/20" situations.

F 2.8 Loc: Bryn Mawr, PA

If you are referring to either curved 'barrel' or 'pincussion' distortion at the edges of your photo, you can correct at least some of it in Photoshop (at least version CS3) at "filter, distort, lens correction, remove distortion".

photophool Loc: Grosse Pointe Park, MI

moggey wrote:

Hi UHH forum

I have been trying out a few of my lenses on my D7100.

I have noticed that I seem to get a fisheye affect between 10 and 17mm if I take a shot in portrait, tall buildings seem distorted.

I've heard there's a way to correct this in Photoshop.

I have Elements 11.

Any ideas guys ?

In order to eliminate the distortion you mention, it can be done in camera if, and only if, the sensor is perfectly vertical. A tall ladder is often not enough. I recognize that this technique is rarely possible, but, if conditions allow, the distortion will not be present. Otherwise, as others have suggested, Photoshop or Lightroom will fix the "keystoning" as long as it's not too severe. Be sure to include plenty of space at the edges of the photo as parts of the image will be lost in PP.

Terra Australis Loc: Australia

moggey wrote:

Hi I have attached 2 pictures , 1 landscape and one portrait.

As you can see both tilt inwards, I am trying to fit as much of Cathedral in as possible and because the grounds that surround it I have to use a wide angle,

Maybe as Goofy says I need to use "Transform" /Vertical Perspective slider to straighten up the image.

Many thanks for you replies

Goofy is correct here. You need to allow a bit of extra space on the sides.

Here is a link that may help;

http://www.dummies.com/how-to/content/correct-camera-distortion-in-photoshop-elements-10.html

Peter Boyd Loc: Blyth nr. Newcastle U.K.

Joecosentino wrote:

Portraits will always look wrong taken wide angle. Best shot between 50 and 150 or so

I think he means portrait format, not actual portrait pictures.

RicknJude Loc: Quebec, Canada

Terra Australis wrote:

Goofy is correct here. You need to allow a bit of extra space on the sides.

Here is a link that may help;

http://www.dummies.com/how-to/content/correct-camera-distortion-in-photoshop-elements-10.html

I checked out the dummies link and it was great. I had a sunset pic taken on the west coast and the buildings (silos) on the left side had a tilt to the right. 2 minutes with Elements 11 and its fixed.
Thanks for the link.

marcomarks Loc: Ft. Myers, FL

moggey wrote:

Hi UHH forum

I have been trying out a few of my lenses on my D7100.

I have noticed that I seem to get a fisheye affect between 10 and 17mm if I take a shot in portrait, tall buildings seem distorted.

I've heard there's a way to correct this in Photoshop.

I have Elements 11.

Any ideas guys ?

In Lightroom, also an Adobe product, it's "Distortion" adjustment to correct barrel distortion. "Vertical" straightens the sides of a tall building you're looking up at or something you're looking down at.

Fisheye effect gets worse as your focal length gets shorter. I use 8mm to 11mm most of the time in real estate interiors and I'm constantly removing barrel distortion in every shot.

cthahn

To solve the above distortion problem, an architechal lens is the answer.. They are a little expensive, but distortion is eliminated and there is no need for photoshop or elements. It is better to do it right when the photo is taken instead of trying to straighten it out later.