Resizing Issues

No Resizing Required

That's right, we no longer require club members to resize their photos for our bi-monthly competitions. So why have a web page about resizing your photos? Several reasons.

The Projector

The hardware device we use to display photos in our club competitions can only display 1920x1080 pixels. Whether a photo is 10x10 pixels or 10,000 x 10,000 pixels, the projector always displays 1920x1080 pixels. No more, no less.

Now, if your photo is 10,000 x 10,000 pixels, something must be done to squeeze it into those 1920x1080 pixels that the projector shows.
That photo must be resized.

Luckily, Lightroom, the application we use to judge photos in our club competitions, automatically resizes photos that are bigger than the size of the projector's hardware. So, no resizing is necessary.
But, the story doesn't end there.

Lightroom's resizing

Lightroom doesn't always display photos full screen. For various reasons, the projectionist may display photos at smaller sizes. If so, some of that beautiful resolution in your photo is not visible.

Small photos look small

Plus, Lightroom does not resize photos that are smaller than the screen. So, if your photo is 960x640, it will be displayed about four times smaller than if it were 1920x1080. Here's an example. smallphotoss.jpg The small picture doesn't entirely fill the screen so it's harder to see its details.

Pixelation

Lightroom can enlarge a photo, but if it is small to start with, the result becomes more pixelated as it gets larger.

The small star (20x20 pixels) on our home page normally looks fine, but when greatly enlarged, individual pixels show up as squares. smallstar.jpg

Tips for Best Results

  • Big, 16x9 aspect ratio photos are automatically resized to fit on the screen and are displayed as big as is possible.
  • Avoid entering a really small photo. Small photos will be displayed as small pictures on the 1920x1080 screen.
  • Tall-skinny and short-wide photos will only fill a part of the screen as in the following narrow portrait and wide panoramic image.

    portnpans.jpg

    These may be at a bit of a disadvantage when judged because they display smaller than photos with a 16:9 aspect ratio.

  • Aspect Ratio

    Defined

    When Lightroom squeezes your photo to fit inside the 1920x1080 box, it usually retains the Aspect Ratio of the photo. An aspect ratio describes the relationship of an object's width to its height. Aspect ratios are written as mathematical expressions, like
    width : height
    or sometimes
    width x height
    example: 1920x1080
    A 1920x1080 pixel photo has an aspect ratio of 16:9.
    1920 / 120 = 16
    1080 / 120 = 9

    If the aspect ratio is not retained, the photo will be distorted. distorteds.jpg My apologies to Colby.

    Page Updated 10 04 2019