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About Ludwig

Lending a helping hand where I can. . . My motto: If it is worth doing, it is worth doing well.

How do I add a distinctive signature to my digital images?

There are many ways to add your signature in a unique and distinctive way. Here is my approach. My tools are Microsoft Paint and Corel PaintShop Pro 2023. Your tools may be somewhat different in the details of how to do the tasks.

First create your signature. You can do it on paper and scan it, or photograph it, or use a tool such as Paint with its large variety of available fonts. Set the image size about 2000 pixels wide by 800 pixels high. Use heavy black lines to form your signature. Save it as a PNG file. Here is an example:

Next modify the signature image to make the white and colored parts, such as guidelines, transparent. One quick way is to use Paintshop Pro or similar tool. Load in your image then make a mask. Click the Mask tool icon and select “From Image …”.

Next select “Any non-zero value”. That masks anything that is not totally black. Colored guidelines and gray areas will thus become transparent. That is what you want.

Then save the image as a PNG file to retain the transparent areas.

Open the signature image up and color it as you like. I make mine gray. This will allow “embossing” of the signature on your art. You may wish to touch up the final image to make it “perfectly yours”.

You are now ready to sign your work of art. Load it into PaintShop Pro (or your tool of choice, keep in mind that the details may be slightly different in another tool).

Select Image – Watermarking – Visible Watermark … – Then in the popup window browse to your signature file and then select the position, size, opacity, and embossing. Play with the levels until you get it exactly your way.

That’s it. PSP will remember your settings so next time it will be quick and easy.

.:. © 2024 Ludwig Keck

How do I manage the layout of text and images in my WordPress posts and pages?

The WordPress world has seen a lot of changes in the past few years, and everything seems new and different. The way the editors work in WordPress has been improved the most. Now everything is done with “blocks”. There are a large number of such blocks. For text with images many options exist. Using the Text and Image blocks is described in more detail here: CloudLadder – Layout with Text and Images.

That article helps you with the basics and allows showing images withing text pretty much as you see in magazines – and other sites. There are many more options and the CloudLadder site has (or will have) additional information.

.:. © 2024 Ludwig Keck

How does a tilt-shift lens correct perspective distortion?

Short answer: It doesn’t. — A tilt-shift lens does not correct the perspective distortion that we often call “falling-over building syndrome”. What it does is to let the photographer avoid the problem.

Here is an illustration of what we are talking about.

The narrowing at the top is just the way imaging works. You see it anytime you look up at a building. Our visual system interprets it for us when we stand in front of the building, but when we see it in a photo it just doesn’t look right.

The problem arises from titling the camera upward. If the plane of the sensor is parallel with the vertical structure, there will be no falling-over building syndrome, “FOBS”.

This photo illustrates how buildings look “right” when the camera is not tilted, held level and aimed so the horizon is in the middle of the frame.

Buckhead

We get way too much sidewalk that way, but it works! Cropping can get us what we want.

Sometimes the camera angle of view does not include all we want when the camera is level. Here is an illustration of that.

The left image models the view with a regular camera lens. The yellow frame simulates the sensor size and shows what the result would be. Note that the building is only partially included.

On the right is an illustration of what shifting of the lens accomplishes. The image is shifted relative to the sensor so all of the building is within the frame. Only the lens shifting is needed for this “correction”, the tilting part of the lens is not used for avoiding the perspective distortion.

There is also a hint there that the image size produced by a tilt-shift lens is much larger than what is produced by a normal lens. The reason, of course, is so different parts of the image can fully illuminate the sensor when the image is moved around. This also makes the optics of such lenses more demanding and expensive.

This is a photo of the Nikon PC Nikkor 19mm 1:4 E ED wide-angle tilt-shift lens. Notice how the whole lens is shifted relative to the lens mount. The range of this lens is 12 mm in either direction. That is half the height of the full frame sensor (about 24 by 36 mm). If you do architectural photography this is a very useful tool.

.:. © 2022 Ludwig Keck