Hi! It is quite an informative email. I never knew the details of the lighting in a stadium until I recieved your mail.
On Mon, 1 Jul 2002, Bob Walkden wrote: > Hi, > > According to Michael Freeman in his book "Light" all stadiums that have > TV coverage use multi-vapour lamps, because these produce a colour quality > close to normal daylight. He suggests that for ISO 400 film at 1/60 or 1/125 > you will need an aperture of f/2.8. So, it means that 400 ISO film is not enough. One has to use atleast 1600 ISO film provided that the lens in use is 300 mm f/5.6. > > So to achieve a depth of field of 4m your film needs to be rated at > 12,800. I am shattered. > > However, most of the photographers are probably using digital cameras, > so these calculations may not apply. For example, a nominal 300mm lens > is effectively longer than that, and the f-stop ratio is changed, so > there may be more depth-of-field than I've indicated. These numbers > are for 35mm. Aah! those DIGI-guys are always at an advantage but I don't want to go DIGI. Many thanks for your comment. With best regards, Ayash. - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
