Distortion
Jun 4, 2022 09:39:30 #
StanMac
Loc: Tennessee
raymondh wrote:
Do you suppose that if one were to tilt the lens downward from level, the same level of distortion would occur?
Yes it would, in the opposite direction.
Stan
Jun 4, 2022 11:06:38 #
raymondh wrote:
I certainly appreciate your response & explanation. I am familiar with some of these terms like keystoning . . . but when you read reviews of lens that have improved barrel or pincushion distortion, well these obviously are in a different category of image "flaws" than keystoning.
I’m not seeing any barrel or pincushion distortion, just distortion as all others have said, caused by not being at the same level as the building. I can fix this in about 5 seconds with Capture One (and a similar procedure with LR/PS), and as amfoto mentioned, in the future in this sort of situation, don’t compose quite so tightly as you’ll loose some of the image when you adjust in PP. If you anticipate doing lots of architectural work, you might consider investing in one of Canon’s excellent tilt/shift lenses. Finally, to control CA and barrel/pincushion distortion, I’d suggest enabling lens correction for your particular lens in your post processing application. You can do it in your camera, but my experience is that it slows down the burst speed due apparently to the in-camera image processing overhead.
Jun 4, 2022 13:18:04 #
TriX wrote:
I’m not seeing any barrel or pincushion distortion... (show quote)
Thank you!
Love this forum - so many knowledgeable & talented photographers who can make the science understandable.
Jun 4, 2022 14:16:46 #
RodeoMan
Loc: St Joseph, Missouri
We have the Scheimpflug principle at work here. Tilt and shift lenses were designed to meet such problems. I'm not sure the reason for the first two images of the brick house but I am impressed.
Jun 4, 2022 20:23:39 #
key-stoning effect.
raymondh wrote:
My d-in-law wanted us to check out their newly rem... (show quote)
Jun 4, 2022 21:04:52 #
Jun 4, 2022 21:17:14 #
I'd just like to point out that parallel lines converge as they recede. It doesn't matter how you tilt your head to look at them. If you raise the camera from the ground to the center of the structure then you cut the effect in half with vertical lines now converging both downward and upward.
The best way to improve parallelism is to move the camera farther away and use a longer lens.
The best way to improve parallelism is to move the camera farther away and use a longer lens.
Jul 26, 2022 01:42:10 #
rcarol wrote:
You’re distortion is a result of tilting the lens upward from level. It is not the result of a poorly designed lens.
The solution is to use a longer focal legth lens and back away from the subject. The added seperation between the camera and the subject will allow you to keep the camera more level - the further back the better.
Aug 11, 2022 08:05:34 #
"Tilt Shift lens" this is the must appropriate and germane solution.
btw, I assist many Architectural commercial shooters in my market.
Tilt Shift lens are their tool of choice for this scenario...
They are a considerable investment and their learning curve is steep.
That is why the commercial Architectural shooters command a high fee.
Hope this helps raymondh...
btw, I assist many Architectural commercial shooters in my market.
Tilt Shift lens are their tool of choice for this scenario...
They are a considerable investment and their learning curve is steep.
That is why the commercial Architectural shooters command a high fee.
Hope this helps raymondh...
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