Leica User Forum - View Single Post - LEICA ANNOUNCEMENT: New Leica Products

guy_mancuso · 09/14/06, 06:18 PM

Read number 3 carefully . No effect to the raw with lens coding

Leica, obviously keen to solve this problem, took a three pronged approach with the M8:

1) Don't use a full frame sensor - at this time it would be cost prohibitive and too complex to produce a sensor which can cover the entire 36x24 mm frame and still work with rangefinder lenses. For this reason the M8's sensor measures 27x18 mm (or 1.33x crop).

2) Use offset microlenses - instead of placing all microlenses directly over the photodiode they are gradually offset as you get closer to the edge of the frame (see below).

3) Know which lens is being used and apply some software correction - all new M series lenses now carry a six-bit code which allows the M8 to identify which lens is used and (optionally) apply a 'final stage' software based vignetting correction (for RAW images the lens used is simply recorded, no change is made).

09/14/06, 06:18 PM	#20 (permalink)
guy_mancuso Erfahrener Benutzer Join Date: 08/16/05 Location: Phoenix Posts: 8,203	Re: LEICA ANNOUNCEMENT: New Leica Products - LEICA M8 / M System Read number 3 carefully . No effect to the raw with lens coding Leica, obviously keen to solve this problem, took a three pronged approach with the M8: 1) Don't use a full frame sensor - at this time it would be cost prohibitive and too complex to produce a sensor which can cover the entire 36x24 mm frame and still work with rangefinder lenses. For this reason the M8's sensor measures 27x18 mm (or 1.33x crop). 2) Use offset microlenses - instead of placing all microlenses directly over the photodiode they are gradually offset as you get closer to the edge of the frame (see below). 3) Know which lens is being used and apply some software correction - all new M series lenses now carry a six-bit code which allows the M8 to identify which lens is used and (optionally) apply a 'final stage' software based vignetting correction (for RAW images the lens used is simply recorded, no change is made). __________________ Guy Mancuso www.guymancusophoto.com Upcoming GetDPI.com Photographic Workshops "It's not always about what the client will accept but about what you want to deliver to your client."