Hi bala,

You can use the below snippets for conversion.

Photoshop.ApplicationClass app = new Photoshop.ApplicationClass();
app.Visible = false; app.DisplayDialogs = Photoshop.PsDialogModes.psDisplayNoDialogs;
Photoshop.JPEGSaveOptionsClass jpgs = new Photoshop.JPEGSaveOptionsClass();
Photoshop.TiffSaveOptionsClass tiffs = new Photoshop.TiffSaveOptionsClass();
jpgs.Quality = 8;
Photoshop.Document ps = app.Open(@"D:\pt.NEF", null); ps.SaveAs("D:\\psaveimage", jpgs, null,2);
ps.SaveAs("D:\\saveImage1", tiffs, null, 2);
ps.Close(null);
ps = null;
app.Quit();
app = null;

hope its useful

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