on 09/10/2003 2:11 PM, John Begg wrote: > there's a new 43 mm lens for the RZ 67 mamiya claim to be equivalent to > a 25mm when using a 36x36 chip, or a 21mm on 35mm > > there's also a new 26mm lens for the 645, which is equivalent > to a 22mm when using the 36x36 chip, or a 16mm on 35mm
I THINK what Mamiya are claiming for these lenses is the EQUIVALENT angle of view (in 35mm terms) on the 6x7 and 6x4.5 formats respectively. Image diagonals of formats are as follows: 35mm =43mm 40mm sq=57mm 6x6=79mm 6x7=87mm So you can work it out for yourself. A 43mm Lens on 6x7 gives a diagonal angle of view of around the same as a 25mm on 35mm format but on a 36x24 chip it behaves, not unsurprisingly, rather like a... ermm... 43mm lens. Still, 26mm on a 36x24 chip is not bad - just like a 26 on 35mm film. Rumours are that they're not out until the new year anyhow. One of the new 5000x4000 22MP sensors, being bigger than anything previously around begins to give us old RZ owners hope for hanging on to our hardly used RZ kit. However for the forseeable future 6x4.5 looks like the way to go. A Mamiya 645 with the new 26mm and a 22MP sensor begins to look like a really good wide angle option - at last! Cheers, Alan -- Alan Russell ZED Photography Bristol +44 (0)117 9420977 =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
