Just published in DAP is a comparison of the Canon EF 100mm f/2.8L IS to the Zeiss ZE 100mm f/2 Makro-Planar. Why not subscribe to DAP today?
I previously reviewed the Canon 100mm f/2.8L IS back in November and had two bad samples (brand-new). I must be a glutton for punishment, because this third sample is also bad, obviously so. Canon’s quality control apparently has taken a serious downturn, or perhaps the EF 100/2.8L IS is simply an optical design that cannot be built reliably.