Hi! in your Evalscript you are returning many bands, why don’t you try this example for true color:

Sentinel-Hub custom scripts

True color product

A repository of custom scripts that can be used with Sentinel-Hub services.

      //VERSION=3
function setup(){
  return{
    input: u"B02", "B03", "B04", "dataMask"],
    output: {bands: 4}
  }
}

function evaluatePixel(sample){
  // Set gain for visualisation
  let gain = 2.5;
  // Return RGB
  return usample.B04 * gain, sample.B03 * gain, sample.B02 * gain, sample.dataMask];
}

Thanks for the answer we have an in-house sentinel-2 processing pipeline for few analysis and true colour image is a part of it. I’d prefer get all the bands and do our own processing.

You are returning only 4 bands in your output, in this case you should fix your current Evalscript and set the output to 13 bands,

//VERSION=3

    function setup() {

        return {

            input: [{

                bands: ["B01", "B02", "B03", "B04", "B08", "B05", "B06", "B07", "B8A", "B11", "B12"],

                units: "DN"

            }],

            output: {

                bands: 13,

                sampleType: "INT16"

            }

        };

    }

    function evaluatePixel(sample) {

        return [sample.B01,

                sample.B02,

                sample.B03,

                sample.B04,

                sample.B05,

                sample.B06,

                sample.B07,

                sample.B08,

                sample.B8A,

                sample.B11,

                sample.B12];

    }

Then when you open the TIFF in Qgis, you should double click the layer in the Layers Panel and set in the properties the bands to B4 (Red), B3 (Green) and B2 (Blue) as you can see here:

For more information about the spectral bands, you can check this documentation about the Sentinel-2 L2A:

Sentinel-2 L2A

Use Sentinel Hub Processing API to access atmospherically corrected Sentinel-2 L2A data with 13 spectral bands.

Sorry, that was the wrong evalscript. I return only 12 bands.

So, were you able to fix the problem?

Sorry, I was away! I just managed to manipulate the histogram in QGIS, but the white patches still remain

Hi again!, would it be possible for you to provide the curl request you get in the Requests Builder?

I solved the issue