There is mounting evidence that supernovae exhibit short term variations, such as UV flashes in their pre-maximum light curves (SN2017cbv; Hosseinzadeh et al. 2017) and rapid variability (SN2014J; Bonanos & Boumis 2016). Given the implications these variations have on their progenitors, we presented results of monitoring the optical light curves of 2 out of 8 bright SNe, primarily using the 2.3m Aristarchos telescope and 1.2m Kryoneri telescope. The supernovae were observed over several nights during the early and late evolution with a cadence of 30-120s and high precision differential aperture photometry was derived. Differential light curves with respect to all comparison stars available on each night, as well as reconstructed light curves after implementing the Trend Filtering Algorithm (TFA; Kovacs et al. 2005) are presented. We derive the decline slope of each supernova on each night and quantify the precision of our photometry and variability in the light curves, after accounting for sources of systematic error.