Archived posting to the Leica Users Group, 2002/07/18
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]"When f 1.0 is too much out of focus!" Hi Gang, An interesting observation when using the Noctilus at f 1.0 creating a "too much out of focus look" that actually becomes a distraction compared to the same situation at f 2.0! Same lens but stopped down to f 2.0. As many of you are aware I'm Bigtime into using M7 and the Noctilux on my new medical project, women in medicine. Today when editing negatives shot at f 1.0 during an eye examination at an Ophthalmologist's office I found something I'd not experienced before. A couple of shots were very interesting, but the depth of field at f 1.0 created a weird look, a visual distortion of out of focus that was distracting, compared to a few frames of the same scene but shot at f2.0 . Where there was just enough sharpness, read "less out of focus" to carry the background to an acceptable sharpness of recognition content. It's something I've not encountered in my many years of using a Noctilux and I'm sure it's merely the clothing and angle of focus that added to this strange out of focus look. I just thought you might find it interesting that sometimes weird visual phenomena can occur when using some lenses under certain angles and wide open apertures. ted - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html