What is the best way to straighten a street light with a conical form?

[Biff]

Lightroom Version Number

11

Operating System

1. Windows 10

What is the best way to straighten a conical form, e.g. a street light? It is quite hard to find the middle line to position a guide line.

E.g.:

 

[Johan Elzenga]

True, but it's the only way. Or use some other line vertical line (like the edge of a wall), because it shouldn't matter which line you choose.

 

[Biff]

To get (a line of) the grid in the useful position is too inconvenient. It would be good if one could postion a (or two) vertical line in the middle (to the left and right) of the object.

 

[clee01l]

I pick an imaginary line that goes through the center of the cone at the top and bottom

 

[Johan Elzenga]

I pick an imaginary line that goes through the center of the cone at the top and bottom

Me too, but that is apparently what Biff finds to be difficult.

 

[Biff]

Yes, me too (because I do not know another way), yes, very difficult, respectively hard to decide what is straighten and what is not.

 

[clee01l]

Yes, me too (because I do not know another way), yes, very difficult, respectively hard to decide what is straighten and what is not.

Due to perspective parallel lines (lampposts) will converge on a vanishing point. If you vanishing point is somewhere above the lampposts, the all lamp posts will lean in toward the vanishing point. Try “Guided” transformation with several lamp posts. If a single vertical line does not solve your sense of uprightness.


Sent from my iPad using Tapatalk

 

[Biff]

OK, I will try that, thank you.

 

[Rob_Cullen]

"Straighten" does not mean to make a 'curved' subject 'straight'.
In Lr-Classic jargon "Straighten" means to 'Make Vertical in the image.'

You will need to 'Warp' in Photoshop to get that "conical" pole 'straight'

 

[Biff]

Sorry, I do not want to get conical or curved lines straight but the object itself.

In Lr-Classic jargon "Straighten" means to 'Make Vertical in the image.'

Yes, that is what I want. The question is how to achieve it the easiest way.

 

[Rob_Cullen]

Photos that show my 'curved' stomach are the problem for me! :laugh:
"easiest way?" Hmmmm -[Auto] button?
And I guess the easiest way might depend very much on the subject content of the image.
Some tutorial links that might be helpful-
https://www.youtube.com/watch?v=jlp8iXoWvU8
https://www.youtube.com/watch?v=32XsI-Pp3Uc

 

[Biff]

Thank you very much for the tutorials. Very helpful.

It appears the auto and level buttons mostly or almost always do not perfectly straighten the images correctly here, to 100 %, So the guide lines seem to be the best / only way. And it indeed seems one just has to fiddle about more (like me) or less to straighten images with such conical objects. Simply as that.

 

[clee01l]

Thank you very much for the tutorials. Very helpful.

It appears the auto and level buttons mostly or almost always do not perfectly straighten the images correctly here, to 100 %, So the guide lines seem to be the best / only way. And it indeed seems one just has to fiddle about more (like me) or less to straighten images with such conical objects. Simply as that.

In the end, what looks upright and when it doesn't remains in the photographer's eye.

I have a artificial horizon turned on in my EVF which I line up before I click the shutter. This helps me to remove the tilted camera problem and know that anything I see in the photo is a result of perspective.