farnz Posted October 3, 2017 Share #101 Posted October 3, 2017 Advertisement (gone after registration) (I think I’ve done this one before but never mind) What’s the volume of a pizza of radius z and depth a? Volume 22 of the Encyclopaedia Britannica. Pete. (PS, no I'm not going to fall for: pi*zz*a.) Link to post Share on other sites More sharing options...
Advertisement Posted October 3, 2017 Posted October 3, 2017 Hi farnz, Take a look here Leica 75mm Noctilux to be realised in 2017.... I'm sure you'll find what you were looking for!
Peter Kilmister Posted October 3, 2017 Share #102 Posted October 3, 2017 As it is 51 years since I left school, my guess is: Pi Z squared x A Having worked with computers since 1967 I have no idea how to present a formula in any other way than as shown above. (which is meant to show embarrassment, not love. ) Link to post Share on other sites More sharing options...
LocalHero1953 Posted October 3, 2017 Share #103 Posted October 3, 2017 The late lamented Terry Pratchett described the mail sorting machine designed by BS Johnson. It included a wheel that, for simplicity's sake, he designed with pi=3. To meet the design, it tapped through the space-time continuum. Although it was so effective that it sorted mail which hadn't been written, let alone posted, it was considered too dangerous to approach. Link to post Share on other sites More sharing options...
Michael Geschlecht Posted October 3, 2017 Share #104 Posted October 3, 2017 Hello Everybody, Well, that is interesting. I was going to say: Excluding the crust: Mostly tomatos, mozzarella & basil. Best Regards, Michael Link to post Share on other sites More sharing options...
sillbeers15 Posted October 4, 2017 Share #105 Posted October 4, 2017 pi times z square times a = volume of pizza, so equals,... Link to post Share on other sites More sharing options...
sillbeers15 Posted October 4, 2017 Share #106 Posted October 4, 2017 pizza Link to post Share on other sites More sharing options...
luigi bertolotti Posted October 4, 2017 Share #107 Posted October 4, 2017 Advertisement (gone after registration) (PS, no I'm not going to fall for: pi*zz*a.) LOL (what is the longest word in English Language ?) Link to post Share on other sites More sharing options...
farnz Posted October 4, 2017 Share #108 Posted October 4, 2017 LOL (what is the longest word in English Language ?) "Smiles"? (There's a mile between the s's. ) Pete. Link to post Share on other sites More sharing options...
Guest NEIL-D-WILLIAMS Posted October 4, 2017 Share #109 Posted October 4, 2017 "Smiles"? (There's a mile between the s's. ) Pete. PeteYou already know that I am the wordman. If anyone is looking for spelling help....... I’m your man Sent from my iPhone using Tapatalk Link to post Share on other sites More sharing options...
luigi bertolotti Posted October 4, 2017 Share #110 Posted October 4, 2017 "Smiles"? (There's a mile between the s's. ) Pete. GOT ! (the equivalent in Italian is MUCH more longer... but vaguely related to Leica ...and to England, too...) Link to post Share on other sites More sharing options...
onasj Posted October 4, 2017 Share #111 Posted October 4, 2017 Not to interrupt our discussion of... pizza, but WHEN do people think this 75/1.25 will be released??? Link to post Share on other sites More sharing options...
pgk Posted October 5, 2017 Share #112 Posted October 5, 2017 Has anybody actually done the maths to see if the RF base is long enough to allow for accurate focusing with a 75mm f/1.25? I would be very surprised if Leica build an RF coupled M lens which cannot be accurately focussed using the RF system simply because inaccuracy with the RF will result in innumerable complaints from those who don't want to use LV to focus it. The Summilux can be tricky but possible, but a shallower dof will make it even more difficult. Just a thought . Link to post Share on other sites More sharing options...
Paul J Posted October 5, 2017 Share #113 Posted October 5, 2017 Has anybody actually done the maths to see if the RF base is long enough to allow for accurate focusing with a 75mm f/1.25? I would be very surprised if Leica build an RF coupled M lens which cannot be accurately focussed using the RF system simply because inaccuracy with the RF will result in innumerable complaints from those who don't want to use LV to focus it. The Summilux can be tricky but possible, but a shallower dof will make it even more difficult. Just a thought . going from 1.25 to 1.4 isn't going to change much in that regard. In use, I doubt it will be noticeable difference. Link to post Share on other sites More sharing options...
lct Posted October 5, 2017 Share #114 Posted October 5, 2017 Has anybody actually done the maths to see if the RF base is long enough to allow for accurate focusing with a 75mm f/1.25? [...] No problem on full frame Ms when using the formula b = e*f^2/k*z where b is the critical RF base length, e the visual acuity (0.0003), f the focal length, k the aperture and z the circle of confusion (0.03 for FF, 0.022 for APS-H). M8 and M8.2 would need a 1.40x or 1.50x magnifier though. Link to post Share on other sites More sharing options...
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