All Forum Comments
Comment by johnriley posted on Police Bullying at 08/01/2014 - 13:09
Comment by johnriley posted on Another pointless thread at 08/01/2014 - 13:06
I find some of them, especially the black and white ones, a bit over-sharp though, with a grainy effect that's almost like reticulation.
So in general I prefer the colour shots.
Comment by johnriley posted on Some Smeggy Slutwalk pics at 08/01/2014 - 11:33
When we come home though I deviate to my favourite route and after a few seconds of "turn around when possible" she adapts very quickly and takes me the way I want.
Comment by johnriley posted on Another pointless thread at 08/01/2014 - 11:30
Comment by johnriley posted on Does an adaptor like this exist? at 08/01/2014 - 11:16
Comment by johnriley posted on Nothing suitable from Pentax, so I've gone Nikon at 08/01/2014 - 08:53
Why didn't I keep the 31mm and 77mm? Limited funds at that time is the simple answer and although I'd bought a number of lenses as a bulk buy the others had to be moved on. Reality of the moment.
Comment by johnriley posted on Consolidating my lens collection . Good Idea? at 08/01/2014 - 08:44
However, on APS-C you are getting the same depth of field with a moderate telephoto lens as you would with a standard lens on FF. The APS-C camera therefore delivers more DOF.
Looked at in reverse, to get a standard view on FF you use your 50mm lens. But for APS-C you use a 35mm lens and therefore APS-C delivers more DOF.
Bigger formats give less DOF, the smaller the format goes you get more DOF.
At the extreme, a Minox "spy camera" uses a 15mm lens to give the field of view of a 50mm on FF. We know 15mm lenses have immense DOF, so the Minox can be fixed focus and give DOF from about 9" to infinity at open aperture.
Comment by johnriley posted on depth of field question at 07/01/2014 - 23:42
I hope you've backed them up!
Comment by johnriley posted on Nothing suitable from Pentax, so I've gone Nikon at 07/01/2014 - 18:30
Comment by johnriley posted on Nothing suitable from Pentax, so I've gone Nikon at 07/01/2014 - 18:21

