Export PDF to JPG - PDF Tools API - C#

For the code below, is there a way to define the resolution that the output will be generated?  The API creates a rather low resolution image.  I would like to create a much high resolution image.

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ExecutionContext executionContext = ExecutionContext.Create(credentials);
ExportPDFOperation exportPdfOperation = ExportPDFOperation.CreateNew(ExportPDFTargetFormat.PNG);

// Set operation input from a source file.
FileRef sourceFileRef = FileRef.CreateFromLocalFile(@"exportPdfToImageInput.pdf");
exportPdfOperation.SetInput(sourceFileRef);

// Execute the operation.
FileRef result = exportPdfOperation.Execute(executionContext);