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#41
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MF resolution question
Michael Scarpitti wrote:
: Gordon Moat wrote in message ... : What I thought, perhaps erroneously, was that we were talking about a : 50mm Hass lens (a WA design) and a 50mm Nikon lens (a standard : design), taking a 24x36mm section of the Hass lens image. : In that case, the Nikon lens will win, because of the smaller film : area that is covered. : Is that or is that not what we are discussing? Not even close and you know it. -- Keep working millions on welfare depend on you ------------------- |
#42
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MF resolution question
There's a reason why 35mm is known as a "miniature" film. :-) I once ran a
test by which I set up a tripod and composed an image and using the same type of film I made a photo with a 35mm, 645, and 4x5 camera. I used a "normal" focal length lens for each camera. I then printed the resulting image on at 11x14. Making the best print I could from each negative. When I show the prints to people everyone of them can plainly tell the difference in quality. ?owser wrote: : There's no need to waste time trying to analyze this mathematically. I've : seen prints using the same film from both formats printed the same size, and : MF wins every time, hands-down. Math be damned, there's no substitute for : viewing prints. : Besides, there a huge flaw in the math. You make the leap from analog to : digital with no consideration for whether or not there actually can be : equivilances. Also, some films print nicely but don't scan well, so where's : the equivilancy? : "Faisal Bhua" wrote in message : om... : Hello, : : I have a question for the folks using medium format. My question is, : does 35mm give identical result to MF up to 8R (8x10) prints? The math : seems to point that way - here's how: : : 35mm frame size = 24x36 mm sq = 1.339203 sq inch : Given, a 300 dpi print is considered to be a "museum quality" print. : 8x10 print = 8x10x(300)^2 = 7,200,000 : Therefore, scan dpi for 35 mm film = sqrt (7,200,000 / 1.339203) = : 2319 dpi : : Now, 35mm film is supposed to have a theoretical resolution of 4000 : dpi. That may be a matter of opinion, but it's certainly more then : 2319 dpi. : : So is there any justification for using MF if 8R is the maximum size : you print? I've read MF guys claiming that old Yashica TLRs : outperforming Nikon SLRs, so I'd like to see some hard evidence behind : this. Feel free to point out any errors I've made - I'm new at this : :-) Also, is film grain a factor? : : About me: beginner, shooting b&w in Minolta X-700, I make my own : prints. Eying MF (esp. TLRs) gear recently. -- Keep working millions on welfare depend on you ------------------- |
#43
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MF resolution question
Faisal Bhua wrote:
: Nick Zentena wrote in message ... : Not only does a MF negative create a better 8x10 but a bigger negative will make : a better print then a MF negative. : Yes, this seems to be the common opinion. That does not answer my : question: why? If 300 dpi is enough for everybody, how can I possibly : gain any advantage? 300 dpi isn't enough for everybody. IT comes down to the amount of information the film can record. -- Keep working millions on welfare depend on you ------------------- |
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