Archived posting to the Leica Users Group, 2003/07/20
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]>I just checked out the Alpa web site and found this reference; > >http://lux.technologies.free.fr/Pano%20en.htm > >Does anyone have any experience with this 15mm f/22 lens in a Leica or >other 39mm mount camera? > >I suspect the price may be on the stratospheric level. Maybe Rich >Pinto knows ( Rich?). > >David David This lens, in fact a 15mm f:11 a perspective orthoscpic and with an 110 angle of view is produced by Lux Technologies a busines specialized in thermocolormeters, and it hasn`t diaphragm nor focusing knob; it's a fixfocus whose design is made with two tiny elements and with a weight of 65 grams. It's, as I mentioned, a f:11 but a T/22 of photometric value. A trick is made for avoiding vignetting: micropoints on the lens create a dregraded similar to the Xpan filters, limiting the ammount of light crossing the center zone of the lens; otherwise the vignetting woud have been two diaphragms. This explain the T/22 value.Distortion not bigger than 0,4%. Contrast average and sharpness is very truly modest. Three years ago his price was over 800 ˆ (US $880 I believe). I, by far, prefer and own a CV Heliar 12mm f:5.6 or, better, a Hologon 15mm f:8 (On my G2 camera) Felix - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html