According to evidence filed by the IRD, the photo was taken because the drawer contained a BlackBerry phone.
The search challenge was dismissed by High Court judge Justice Geoffrey Venning last August.
In the Court of Appeal Tauber, Webb, their accountant Maree Bockett and several related companies have claimed the search warrant relied on an inadequate affidavit and that the IRD did not take all practicable steps before undertaking the raid.
Justices Lynton Stevens, Simon France and Forrest Miller presided over yesterday's hearing in Wellington, and questioned the breadth of the tax department's search powers.
The bench asked to see whether the affidavit used to justify the search was in order, and whether all the deletions were appropriate.
Counsel for the tax department, Pauline Courtney, said some information in the affidavit had been redacted to avoid prejudicing future action.
The department was still investigating whether there had been any suppression of income, tax avoidance, or tax evasion, she said.
Webb's lifestyle, which Courtney said did not match the low income he had declared, was a matter of concern for the tax department.
The judges reserved their decision.