Perspective Correction

[drisley]

I thought I once came across some software, or a PS plugin, that made correcting perspective distortion (from wide angle shots) easy.

Can anyone recommend a plugin, software, or good tutorial?

Thanks alot

[CyberDyneSystems]

In photoshop,. you need to play with "Edit" "transform"

[Tom W]

Photoshop Elements has this feature as well. I had my first experience with it yesterday. It works like a digital tilt-shift lens.

[robertwgross]

I've been fascinated by this... software functions that can simulate hardware functions. Perspective, I can understand.

A neutral density filter, I can understand.

A diffusion filter, I can understand.

But, I want to see somebody simulate a circular polarizer... in software!

---Bob Gross---

[randallwade]

the new photoshop user magazine lists their top 10 "photographic" plugins. they recommend LensDoc Filter (msrp not listed). I have not used this filter, but it looks like it does the trick. I use a manual correction that is quite easy. Double click your background in the layers pallet to make it into a layer. then drag a couple of vertical guides and one horizontal out onto the image near to some reference points. then choose edit>transform>distort. you can then drag the points at the corners until your image distortion is corrected. watch as you drag one point as it will affect the other parts of the image. the image may appear to become distorted or pixelated, however, when you confirm the transformation, everything smooths out. I think i found the technique in photoshop user a while back, but i'm not sure what issue. let me know if you need further explanation.

[Mikesht]

the new photoshop user magazine lists their top 10 "photographic" plugins. they recommend LensDoc Filter (msrp not listed). I have not used this filter, but it looks like it does the trick. I use a manual correction that is quite easy. Double click your background in the layers pallet to make it into a layer. then drag a couple of vertical guides and one horizontal out onto the image near to some reference points. then choose edit>transform>distort. you can then drag the points at the corners until your image distortion is corrected. watch as you drag one point as it will affect the other parts of the image. the image may appear to become distorted or pixelated, however, when you confirm the transformation, everything smooths out. I think i found the technique in photoshop user a while back, but i'm not sure what issue. let me know if you need further explanation.

I used this software, it's a Photoshop plugin. It works like a charm, truly is. I recommend it.

http://www.andromeda.com/info/lensdoc.html

[PacAce]

I thought I once came across some software, or a PS plugin, that made correcting perspective distortion (from wide angle shots) easy.

Can anyone recommend a plugin, software, or good tutorial?

Thanks alot
With PS you can use the cropping tool and clicking on the perspective option on the tool bar at the top.

[CyberDyneSystems]

I'm telling you,. (And so is Pac Ace)

Photoshop allready does all this without having to buy a plug in.

Make a selection,. go to "Edit" "transform" and work from there...
there are quite a few options,.

[dtrayers]

And when you do use the Transform tool I'd suggest making the grid visible. It's a lot easier to line stuff up.

[karusel]

But, I want to see somebody simulate a circular polarizer... in software!

It can be done to a certain extent... :wink:

[slejhamer]

But, I want to see somebody simulate a circular polarizer... in software!



http://www.outbackphoto.com/reviews/tools/20001115NikColorEfex.html

Can't remove glare, but will cut haze and increase saturation nicely.

[iwatkins]

Yes, I've tried the Nik tool. Yes, it works, sort of.

But I don't think it really does anything you couldn't do with messing about in PS CS, just don't ask me how :D

As slejhamer says it does a nice job but doesn't do anything with reflections from glass or glare.

Cheers

Ian

[maderito]

Can anyone recommend a plugin, software, or good tutorial?

Helmut Dersch developed mathematical transformations that correct various forms of lens distortion. His tools are incorporated in a plugin called PanoTools. Other plugins bsed on Panotools are also available.

If you're interested, Goggle "panotools" and/or see the following sites:

http://www.fredmiranda.com/distortion/
http://www.kekus.com/plugin/

[drisley]

Thanks guys.
Yes, I was aware of using the edit tools, but I found that they often create more distortion in places when you are fixing distortion in other places.

I think lensdoc is indeed the software I was thinking of. I will have a look at that and Panotools.

Thanks again peeps :)