Showcasing hi-res images on 4K HDR TV

[DjangoUntrained]

I have 50 DSLR images that I would like to use in a slide show. I have processed them from RAW, and now have 16bit jpegs in ProPhoto RGB colour space. I can easily crop the images down to 4K, but what is the preferred file format and bit depth, that would bring out the best capabilities of my HDR 4K TV / Xbox one X setup?

Previously I would have used Adobe Premier Pro to construct a video, and then rendered it out as a mpeg, but CS6 only supports HD not 4K output.

 

[Carey Brown]

If it's a smart tv one option is to see if you can install a "Plex" app. Then on your computer install a Plex server and point it at your 4k images. The Plex app can play a slide show.

Always resample you pictures down 3840x2160. If you don't resample your photos you run the risk that the tv may resample them for you, which may not give you the best results.

I tried this with my LG 4K OLED tv and the photos looked stunning. The only thing I ran into is that the tv wasn't aware that the slide show was running and dropped into screen saver mode after a few minutes. I hope they fix that.

 

[sybersitizen]

I have 50 DSLR images that I would like to use in a slide show. I have processed them from RAW, and now have 16bit jpegs in ProPhoto RGB colour space.

Just as a side comment, you might or might not have 16-bit JPEGs. You can certainly work with a 16-bit image in your editor, but it only becomes a JPEG when it's saved as a file; and a JPEG file only supports 8 bits. An exception is the JPEG 2000 format ... so if you're working with that, then congratulations; but watch out for compatibility issues with other applications.

Previously I would have used Adobe Premier Pro to construct a video, and then rendered it out as a mpeg, but CS6 only supports HD not 4K output.

That doesn't sound right. According to this, you can:

 

[DjangoUntrained]

Thanks for the info, will check whether Premier Pro can indeed handle a 4K workflow.

 

[Davi7d777]

Unfortunately huge amount of technical product and standards flux now with increased bit depth and HDR. Easy to buy product that may be dated in just a year or two. I'm personally waiting for exhibition purposes for 65 inch 8K UHD panels to arrive that are set to make appearance Q3 2018. That will have a similar dot pitch to 32 inch 4K. Is your tv one of the newer 10-bit models? As for slideshows, I'd be leary of applications targetting TV or cinema users because they may automatically translate or re-scale images given most consumer images are not likely to be optimized.

https://www.dpreview.com/forums/thread/3821364

Probably ought to first read this thread:

https://www.dpreview.com/news/75352...-world-s-first-open-standard-for-hdr-displays

https://displayhdr.org/certified-products/

Currently I find displaying my 8-bit jpg processed image files on non-HDR Dell Ultrasharp 24 inch and 15.6 displays quite satisfying though on some images subtle banding does result. However I doubt that will matter much to any public audience that I expect will drop their jaws versus what one even see with large format prints from pros in our best galleries. Thus don't plan to try and display my own body of large image work beyond the current 8-bit until more dust settles.

As for slideshow apps, I last I poked around on available apps more than a year ago and did not find any that motivated me to change from simply using the Irfanview 64 freeware slideshow functions that is rather comprehensive in flexibility. It won't modify your images for display. One thing plaguing displays currently is when applications grab monitor or tv display parameters, results are not always as intended because product firmware implementations have been in technical flux. Thus one needs to figure out by trial and error how to set Irfanview up on one's specific display or tv.

You mentioned sizing for the 16:9 display format that necessarily is going to mutilate either by cropping or H versus V rescaling. Better to display a full image with say black borders and then have options for magnification, for instance at 100% pixels or whatever. If an app doesn't support a border mode (like just useless white), one could always create a display image version in Photoshop at 3840x1920 with areas outside image borders filled black.

--
David

 

[DjangoUntrained]

Thanks David,

I had expected this to be a slightly more trodden path. In common with many photographers who morphed from shooting film, and always developed a set of prints, I moved to digital a decade back and printing became a rarity, with images restricted to my PC screen, or tablets/phones.

That's why I had high expectations of the 4K 10bit HDR capable TV, and Xbox One X combination.

I'll try with the Premiere Pro route, as previously I had been satisfied with 1080p video and embedded sRGB jpegs (including support for Ken Burns style effects). Just need to experiment with image format, to see what the absolute best display I can achieve.

 

[Mark S Abeln]

I concur with the others about resizing your images to the exact pixel dimensions of the display, but I also will add that you might need to add some sharpening to your images after the resize.

There are a variety of resizing (or rather, resampling) methods in use, and some give better results than others, and likewise with sharpening. Some images might end up with a moiré or interference pattern after resizing, and so another technique might be used to avoid this.

Basically, you want the image to look crisp from a reasonable distance but you don't want to see the artifacts that cause the sharpening effect.

 

[Guy Parsons]

I'll try with the Premiere Pro route, as previously I had been satisfied with 1080p video and embedded sRGB jpegs (including support for Ken Burns style effects). Just need to experiment with image format, to see what the absolute best display I can achieve.

I've yet to pay for the update but ProShow Gold latest version now makes 4K shows, but mainly my input was triggered by the mention of Ken Burns effect.

Use the effect with understated subtlety as once I made the mistake of using a 24 inch monitor to create a slide show with Ken Burns effects onto DVD. Looked smooth and good on my small screen but when sent to a friend to view on a 40+ inch screen it rather induced sea-sickness (or should that be see-sickness?). Just way too much motion applied for a larger screen.

Absolute image quality actually is hardly an issue with a slide show as the usual 3 to 5 seconds for display plus some moving effects tend to over-ride any real attempts to pixel peep the image by people sitting back at the usual popcorn munching distance from the screen. At that distance they could be 1MP or 2MP images displayed and they would not see the difference.

Regards.... Guy

 

[MarshallG]

With an 8K TV, you’ll get 32 megapixels, so an 8mp, 4K TV is just a temp solution... but still way better than a 2mp, 1080p Set.