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In which I continue to seek part time employment as the ruler of the world.

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Sunday July 01 2012

I mean these ones:

image

Taken by me yesterday, in North East London, across the Regents Canal, on a day when the sky was especially dramatic.  But does anyone know how I can make those gasometers go straight up in the air instead of converging so violently?  I use PhotoStudio 5.5.  Just the technical term or the function I need to look for would help.

In pre-CS2 versions of Photoshop you can use the perspective checkbox in the crop tool to correct perspective: http://www.kenrockwell.com/tech/perspective.htm

Posted by Thomas on 02 July 2012

Thomas

Many thanks for that.  I don’t have Photoshop, but the thing you link to describes my problem far better than I did.  Anyone confused about what I am asking for might want to look at that.

Now I will try looking in the vicinity of cropping in PhotoStudio.

Posted by Brian Micklethwait on 02 July 2012

Brian,

I misread Photostudio on your post, apologies. Looking at this manual it seems that Photostudio has a Transform tool (see p.22) which has a perspective mode. That will enable you to distort the image to correct the vertical perspective.

http://www.scribd.com/doc/55604184/PhotoStudio-5-5-QSG

Thomas

Posted by Thomas on 02 July 2012

Wonderful.  Many thanks.  I’ll see what I can do.

If I can make this work, my life will be significant improved.

Given that Photoshop is by far the market leader in this field, it is not surprising that you assumed I use it, once you saw “Photo”.  Funny how the mind works, but mine definitely does things like that also.

Thanks again.

Posted by Brian Micklethwait on 02 July 2012

Once the perspective is corrected, there may be remaining “barrel distortion”, meaning the uprights will appear to curve outwards in the middle (like a barrel). In Photoshop at least there is a tool to also correct this, PhotoStudio may have one too.

Posted by Friday Night Smoke on 02 July 2012

I would use the ‘transform’ tool in Gimp, using its perspective function, so sounds like that’s the place to look.

Gimp is excellent and completely free, incidentally. I don’t know of PhotoStudio, but recommend Gimp if you’re looking for an alternative.

Posted by Stewart on 02 July 2012

Maybe this is because I spend too much time staring through cameras, but I think this gasometer photo looks fine just as it is.

What exactly does a gasometer do though?  They litter the English landscape. We don’t have them in Australia. Why, exactly?

Posted by Michael Jennings on 02 July 2012

What does it do? I imagine it is like a FIFO in computer science. The input is not perfectly synchronised with the output so a buffer is needed to store the temporary surplus and smooth things out. The real question is: why don’t you need them in Australia? Or are they there, but hidden?

Posted by Rob Fisher on 03 July 2012

What Brian needs is a perspective control lens: http://www.nikonusa.com/Nikon-Products/Product/Camera-Lenses/2168/PC-E-NIKKOR-24mm-f%2F3.5D-ED.html

;-)

Posted by Rob Fisher on 03 July 2012

I will second Stewart’s recommendation for GIMP.  GIMP is an awsome, FREE tool and it is very powerful.  The “transform tool” in GIMP will do the trick.

Posted by Brian Mullins on 07 July 2012

Thanks again for all this help.

Michael, I agree that the photo looks pretty good now.  I was asking more because I have tried several times lately to do this trick with other photos, and I generally want to know.

I seem to recall taking a look at Gimp, long ago.  I will take another look.

Posted by Brian Micklethwait on 08 July 2012

These are the gasometers in on the Regent’s Canal in Hackney just east of Broadway Market and just west of Mare Street, aren’t they. That’s an interesting little neighbourhood.

Posted by Michael Jennings on 09 July 2012

Try using the tools in ‘Hugin’. It’s actually for stitching panoramas but has all sorts of distortion correctors.

Freeware. Google & download There’s extensive help documentation, as well

Posted by perdu on 13 July 2012
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