Image column On Select

LidorD You can use JSON column formatting on image column. Use JSON like: 

{
  "$schema": "https://developer.microsoft.com/json-schemas/sp/column-formatting.schema.json",
  "elmType": "div",
  "customRowAction": {
    "action": "defaultClick"
  },
  "children": [
    {
      "elmType": "img",
      "attributes": {
        "src": "@currentField.serverRelativeUrl"
      },
      "style": {
        "width": "100px",
        "cursor": "pointer"
      }
    }
  ]
}

Documentation: Use column formatting to customize SharePoint 

Note: You can change styling in above JSON as per your requirement.

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