Plustek 8200i - handle large scans

[jokris]

Advertisement (gone after registration)

Hello, my first post here

I have been scanning negatives with Plustek 8200i, in 7200 dpi and 48-bit color (Vuescan). The black borders are cropped, images (tiff) are color adjusted, and the file size is around 450 MB each.

Had anyone done the same, and if so, what were your next steps?

I want the images to be shown on a 8k TV in the future. But is it worth keeping this resolution, or should I scale down to perhaps 50% of the current image size? Besides changing size, is there any other way to reduce file size without losing image quality?

 

[jokris]

Now I also noticed that when editing and saving files, the tiff file size doubles. The files are almost 900 MB large. Does anyone know why?

[frame-it]

10 hours ago, jokris said:

Hello, my first post here

I have been scanning negatives with Plustek 8200i, in 7200 dpi and 48-bit color (Vuescan). The black borders are cropped, images (tiff) are color adjusted, and the file size is around 450 MB each.

Had anyone done the same, and if so, what were your next steps?

I want the images to be shown on a 8k TV in the future. But is it worth keeping this resolution, or should I scale down to perhaps 50% of the current image size? Besides changing size, is there any other way to reduce file size without losing image quality?

 

on an 8k TV but from what source?

a file via HDMI?

a 8k video source?

an OLED 8k TV like the latest LG??

 

 

[jokris]

A file via HDMI

[frame-it]

53 minutes ago, jokris said:

A file via HDMI

so you're playing off a computer, connected to an 8k tv via HDMI...the computer might struggle with 900mb TIFF files playing one after another, jpeg is definitely better

i would take a laptop with different file sizes [not x/y size, but size in megabytes], and an hdmi cable and go to a tv shop and try it out

its also good to check out the colors of the tv, in case it needs adjustments and blue skies look cyan or skin tones look radioactive

 

Edited July 1, 2023 by frame-it

[250swb]

16 hours ago, jokris said:

Hello, my first post here

I have been scanning negatives with Plustek 8200i, in 7200 dpi and 48-bit color (Vuescan). The black borders are cropped, images (tiff) are color adjusted, and the file size is around 450 MB each.

Had anyone done the same, and if so, what were your next steps?

I want the images to be shown on a 8k TV in the future. But is it worth keeping this resolution, or should I scale down to perhaps 50% of the current image size? Besides changing size, is there any other way to reduce file size without losing image quality?

 

I always smell a rat when scanner manufacturers mention optical resolution. The Plustek 8200i does have a maximum optical resolution of 7200 dpi, but it ceases to improve after 3600 dpi and only adds 'noise' up to 7200 dpi to make bigger files (if you really need bigger files). But I did a search and found a clear discussion specifically about the Plustek 8200i on another forum

https://www.naturescapes.net/forums/viewtopic.php?t=252133

In essence you'd be better scanning at 3600 dpi and if you need vastly bigger files beyond 90mb use Lightroom or Photoshop to upsize them.

Edited July 1, 2023 by 250swb

[tom.w.bn]

Advertisement (gone after registration)

vor 16 Stunden schrieb jokris:

Now I also noticed that when editing and saving files, the tiff file size doubles. The files are almost 900 MB large. Does anyone know why?

You probably saved your editing layers in the TIF file. Reduce (flatten) the layers to 1 before saving the file.

[George Collier]

About adjustment layers and file size. It's a personal priority, but I don't flatten the image until I want to print it, for a couple of reasons:

The basic image (background layer) remains unchanged until flattening and executing the adjustments. The first adj layer contains a duplicate of the background layer, then all other stacked adj layers use that layer for viewing (I average anywhere from 3 -10 layers, for curves, etc, but mostly for individual masked adjustments- like burning and dodging in the darkroom).  This roughly doubles the size of the file.

Every time you execute an adjustment, the file is resampled - the quality remains highest if this happens only once.

I store my images on an external drive with 2 backups (Time Machine on a Mac). If I go back months later, and feel differently about an image, I can keep making adjustments until I'm done (like going back into the darkroom months later and printing a neg differently.)

This comes from early recommendations by Fraser and Blatner, highly respected Pshop experts back in the day.

The last reason is that (regarding file size) hard drive space is one of the cheapest things in this whole deal, at least to me.