Lentigram 3.1.0

[Giovanni Remigi]

I released one last version of Lentigram:

www.framedlives.com

It is now possible to import two simulation videos into the Video tab and compare them with a split view.

I find this feature useful when I'm tweaking the parameters and comparing the different results.

Enjoy,

Giovanni

[Troy Sica]

Are you also releasing a Mac OS version of 3.1.0?

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[Troy Sica]

Sorry, I see it just got uploaded.

[dighal (null)]

Hi Giovanni,

I always use the “inch” units in Lentigram, however today a question came up from someone using millimeters. I couldn’t find a setting to change from imperial to metric units. Does that exist in Lentigram?

Best regards,

Michael Brown

<8-video.jpg>

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<8-video.jpg>

[Giovanni Remigi]

Lentigram uses inches internally. It is because resolutions are always measured in Pixels per Inch.

That said, the software can be updated to support it. But what about the resolutions, are there any people using pixels per cm? Or are we just talking about the print measures?

I need some feedback from Lentigram users before making any changes.

Giovanni

[dighal (null)]

I am only talking about the print dimensions and registration border. The lenticular sheets should remain LPI.

Sent from my iPhone

On Mar 13, 2026, at 3:54 AM, Giovanni Remigi <g.re...@gmail.com> wrote:

Lentigram uses inches internally. It is because resolutions are always measured in Pixels per Inch.

To view this discussion, visit https://groups.google.com/d/msgid/lentigram/ac0ac5d2-2cda-46f4-bd4d-4739d05d95e2n%40googlegroups.com.

[Giovanni Remigi]

I'm giving it a try, and let's see where it leads me. I got this request a few times in the past.

[dighal (null)]

That looks good. I. Think anyone outside the United States probably prefers metric.

On Mar 13, 2026, at 6:33 AM, Giovanni Remigi <g.re...@gmail.com> wrote:

I'm giving it a try, and let's see where it leads me. I got this request a few times in the past.

To view this discussion, visit https://groups.google.com/d/msgid/lentigram/cbaaa028-e96a-4ded-be67-becbe8ca2e58n%40googlegroups.com.
<units.png>

[dighal (null)]

Hi Giovanni,

Could you also explain “Auto Blend” and “Side images to blend”. I haven’t used either of these options because I don’t understand how they alter the interlaced file.

Best regards,

Michael

On Mar 13, 2026, at 6:33 AM, Giovanni Remigi <g.re...@gmail.com> wrote:

I'm giving it a try, and let's see where it leads me. I got this request a few times in the past.

To view this discussion, visit https://groups.google.com/d/msgid/lentigram/cbaaa028-e96a-4ded-be67-becbe8ca2e58n%40googlegroups.com.
<units.png>

[Giovanni Remigi]

I released version 3.1.1, which supports both imperial (in) and metric (cm) units.

Lentigram-3.1.1.AppImage
Lentigram-3.1.1.dmg
Lentigram-3.1.1.exe

Regards,

Giovanni

[Giovanni Remigi]

This explanation is a bit longer and may require a video.

When you want to add more depth to your lenticular image, the only way is to blur the background. If you do not blur the background, you will see some "jumping" or "discretization" in the far objects that will ruin the lenticular effect.

Auto blend

Auto-blend adds an artificial blur to the background by blending multiple images. For example, if you have a 40LPI and a 600PPI printer, we all know that we can fit 600/40 = 15 images behind each lenticular lens (approximately).

If you give more image that you actually need, Lentigram is able (when auto blend is on) to mix these images together to blur the background. My personal rule is to use a sequence of 128 images.

I think that the auto blend has been superseded by the bokeh feature now. You can blur the images directly, export them, and use them in the interlacing phase. The only reason why you may want to add bokeh into a lenticular image is to fit more depth (perceived) into the same lenticular sheet.

Side images to blends

This is still a very useful feature. When we create a 3D image, we use a sequence of images that are similar to each other, except for the images at the extremes. If you look at a lenticular image, you know that after a certain angle, the image repeats itself. When this happens, it is very common to see banding because the images at the extremes differ significantly.

With side images for blends, we sacrifice a negligible angle of view to slow down the transition at the extremes, removing this unpleasant banding. The number indicates how many images you are willing to sacrifice at the extremes to remove the bangings. With a 40-something LPI and a 600 PPI printer, I achieve total banding removal with 6 images, with unperceivable loss of view.

With the new video-split feature I can show you the difference. On the bottom is an image with side images to blend = 0, on the top is an imagw with side images to blend = 6.

[Giovanni Remigi]

This maybe show the problem better. Can you see the bandings  on the right?

[dighal (null)]

Yes, I do see the banding. Thank you for the explanations.

Best regards,

Michael 

Sent from my iPhone

On Mar 16, 2026, at 8:14 AM, Giovanni Remigi <g.re...@gmail.com> wrote:

This maybe show the problem better. Can you see the bandings  on the right?

To view this discussion, visit https://groups.google.com/d/msgid/lentigram/9f3e380e-f987-49b9-a0ce-53d464af091dn%40googlegroups.com.

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