We present an analysis of 18 short-cadence ( SC ) transit lightcurves of TrES-2b using quarter 0 ( Q0 ) and quarter 1 ( Q1 ) from the Kepler Mission . The photometry is of unprecedented precision , 237 ppm per minute , allowing for the most accurate determination of the transit parameters yet obtained for this system . Global fits of the transit photometry , radial velocities and known transit times are used to obtain a self-consistent set of refined parameters for this system , including updated stellar and planetary parameters . Special attention is paid to fitting for limb darkening and eccentricity . We place an upper limit on the occultation depth to be < 72.9 ppm to 3- \sigma confidence , indicating TrES-2b has the lowest determined geometric albedo for an exoplanet , of A _ { g } < 0.146 . We also produce a transit timing analysis using Kepler ’ s short-cadence data and demonstrate exceptional timing precision at the level of a few seconds for each transit event . With 18 fully-sampled transits at such high precision , we are able to produce stringent constraints on the presence of perturbing planets , Trojans and extrasolar moons . We introduce the novel use of control data to identify phasing effects . We also exclude the previously proposed hypotheses of short-period TTV and additional transits but find the hypothesis of long-term inclination change is neither supported nor refuted by our analysis .