Pen F keystone compensation example

Same image, in-camera keystone correction

To me the building looks a bit "overstretched" and seems to be "falling" to the left side (especially in the upper half). The rectangular railing on the upper left looks a bit "fancy" compared to the rectangular railing on the right. Also the left column somehow seems to "take a bow" to the left side, i.e. it doesn't go straight upwards.

Probably I wouldn't have even noticed these minor imperfections, if I didn't know that the image was key-stone-corrected. Still I would have corrected the image a little bit less, so that it still looked "natural". Otherwise I also think this is a  very nice feature to have in camera.

I agree with the others that it is a bit over corrected. the building looks like it starting to lean towards the left, is there any adjustment of how much it can correct?

I normally use LR to correct any percieved perspective distortion but try to maintain some balance, I have seen many high rise building being so keystone corrected that they lost the natural vanishing point of the perspective.

I've used this correction tool in Lightroom (I shoot raw) and find that 100% vertical lines don't always look quite right.  I usually leave a bit of keystoning to keep the image looking somewhat natural.

The image was made on the run, no tripod. It was done through the viewfinder rather than on the larger LCD. It may well be a bit overcorrected. Is anyone willing to give me points for effort? 

James Pilcher wrote:

I'm fairly old school when it comes to digital cameras: aperture, shutter speed, ISO, focus, snap. I admit that I can become overwhelmed with all of the features in the newest cameras. I expect feature bloat to continue unabated well into the future.

One feature that Olympus put in the Pen F is keystone correction/compensation. I started using it a few months back and I have to admit, I really like it. Here are two versions of the same image, one from raw, and one the jpg that the camera generated after I engaged keystone correction. Take a look and I'll finish up my post below:

Pen F, M.Zuiko 12mm f/2 - uncorrected

Same image, in-camera keystone correction

I think the corrected image is 100% better! I believe this new feature can truly improve any images where you must tilt your camera up (or down). Yes, it takes a few seconds to do, but the results can be worth it. I'm using it enough that I've assigned the Fn2 button on my Pen F to activate this feature.

Try it. This is a useful feature.

Jim Pilcher
Bonita Springs, FL, USA
Life is a breeze by the sea

James Pilcher wrote:

The image was made on the run, no tripod. It was done through the viewfinder rather than on the larger LCD. It may well be a bit overcorrected. Is anyone willing to give me points for effort?

James Pilcher wrote:

I'm fairly old school when it comes to digital cameras: aperture, shutter speed, ISO, focus, snap. I admit that I can become overwhelmed with all of the features in the newest cameras. I expect feature bloat to continue unabated well into the future.

One feature that Olympus put in the Pen F is keystone correction/compensation. I started using it a few months back and I have to admit, I really like it. Here are two versions of the same image, one from raw, and one the jpg that the camera generated after I engaged keystone correction. Take a look and I'll finish up my post below:

Pen F, M.Zuiko 12mm f/2 - uncorrected

Same image, in-camera keystone correction

I think the corrected image is 100% better! I believe this new feature can truly improve any images where you must tilt your camera up (or down). Yes, it takes a few seconds to do, but the results can be worth it. I'm using it enough that I've assigned the Fn2 button on my Pen F to activate this feature.

Try it. This is a useful feature.

Jim Pilcher
Bonita Springs, FL, USA
Life is a breeze by the sea

I don't know how to make the adjustment in your Pen-F to reduce the over correction, I would try to make it not so straight vertical, it is not so obvious in your shot, but it does gave the impression or illusion of a wine glass effect, where the buildings top is wider than the bottom.

I worked in 3D rendering for architecture for many years, and the common problem with setting up the perspective view of high rise building is at street eye level looking up, my client always insist having the line 100% vertical (bit of a cliche), upon seeing the finish rendering, they would always ask why the building looks strange, I have to explain to them because the natural vanishing point has been distorted too much.

example of over correction in 3D rendering. it is perfectly straight, but have a strange top heavy feel.

better example, more convincing with a slight vanishing towards the top,

Your illustrations were very useful. Thanks.

Jim Pilcher
Bonita Springs, FL, USA
Life is a breeze by the sea

Yes, of course. Maybe my comment sounded a bit harsher, than it was meant to be. Maybe I should apologize. No need to justify your picture. Everything is fine, I just wanted to share my observations (also on the run). Please excuse any discourtesies of mine, have fun and keep on shooting (and experimenting).

James Pilcher wrote:

The image was made on the run, no tripod. It was done through the viewfinder rather than on the larger LCD. It may well be a bit overcorrected. Is anyone willing to give me points for effort?

James Pilcher wrote:

I'm fairly old school when it comes to digital cameras: aperture, shutter speed, ISO, focus, snap. I admit that I can become overwhelmed with all of the features in the newest cameras. I expect feature bloat to continue unabated well into the future.

One feature that Olympus put in the Pen F is keystone correction/compensation. I started using it a few months back and I have to admit, I really like it. Here are two versions of the same image, one from raw, and one the jpg that the camera generated after I engaged keystone correction. Take a look and I'll finish up my post below:

Pen F, M.Zuiko 12mm f/2 - uncorrected

Same image, in-camera keystone correction

I think the corrected image is 100% better! I believe this new feature can truly improve any images where you must tilt your camera up (or down). Yes, it takes a few seconds to do, but the results can be worth it. I'm using it enough that I've assigned the Fn2 button on my Pen F to activate this feature.

Try it. This is a useful feature.

Jim Pilcher
Bonita Springs, FL, USA
Life is a breeze by the sea

M_G wrote:

Yes, of course. Maybe my comment sounded a bit harsher, than it was meant to be. Maybe I should apologize. No need to justify your picture. Everything is fine, I just wanted to share my observations (also on the run). Please excuse any discourtesies of mine, have fun and keep on shooting (and experimenting).

Oh, I felt no discourtesy coming from the comments in this thread. They all seemed very honest. I thank everyone that participated, and I did glean a couple of good tidbits for future experimentation.

And certainly, I will keep having fun and shooting. 

Jim Pilcher
Bonita Springs, FL, USA
Life is a breeze by the sea

Thomas Traub wrote:

James Pilcher wrote:

The image was made on the run, no tripod. It was done through the viewfinder rather than on the larger LCD. It may well be a bit overcorrected. Is anyone willing to give me points for effort?

to the OP: 10 points😊👍

Thank you, Thomas. That's a grand total of...well...10 points so far! 

Jim Pilcher
Bonita Springs, FL, USA
Life is a breeze by the sea

boxerman wrote:

Nice examples. They agree with my predilections. That is, I almost always find that in situations of fairly extreme vertical convergence, I prefer less than "natural," but not fully corrected. So, that seems to mean that, since in-camera is not adjustable, I will always have to manually correct

Don't give up just yet. I don't know where you get the idea that in-camera keystone correction is not adjustable. It is quite adjustable, about 10 steps in each direction from uncorrected.

Jim Pilcher
Bonita Springs, FL, USA
Life is a breeze by the sea

larsbc wrote:

I've used this correction tool in Lightroom (I shoot raw) and find that 100% vertical lines don't always look quite right. I usually leave a bit of keystoning to keep the image looking somewhat natural.

Yep, same thing with DxO, 100% vertical lines makes it look overcorrected somehow. I always leave a bit too.

For jpeg shooters outhere, I think it is great to have such posibilities in camera, it's really important, and Olympus does offer a lot in terms of in-camera processing.