Standard Model tests and searches with photons at the LHC

We report on the sensitivity of the LHC experiments to the Standard Model predictions for W±gamma and Zgamma productions in pp collisions with final states containing electrons, muons and photons. The studies use detector simulation data at sqrt{s}=14 TeV including calibration and alignment corrections. The results show that the cross-section measurements of W±gamma, and Zgamma can be established with significance better than 5 sigma for the first 0.1 fb-1 of integrated luminosity. The sensitivities to anomalous triple gauge boson couplings is also estimated. The measurements can be significantly improved with 1 fb-1 of data over the results from the Tevatron.