... ). 49mm was a Pentax size, 52mm for Nikon etc. Obviously very wide, long or fast lenses would have bigger filters for each system. Rob P.S. If you use a rubber lens hood you can 'distort' the hood with your hand while shooting if the sun is to one side. Easy to check the pic and take another if you were a little too heavy handed. posted: 27 Feb 2018 22:08 from: Rob Manchester Local Landscape this morning, blurry detail is due to the cheap phone 2001_271655_090000000.jpg This used to be the route by which the MS&LR( Manchester, Sheffield and Lincolnshire Railway) gained access to Manchester Central station. There was talk back in the 1950's of electrifying it to link with the Woodhead route electrics but it came to nothing. This link line closed completely in 1988 having been goods only for quite a while. Conversion to a cycle/foot route followed. Now its best use is as a pleasant 3 mile walk to Sainsburys for light shopping trips and a run for one of the ...