BeBu Lamar
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Everything posted by BeBu Lamar
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Not only being worn out I doubt that any mechanical shutter is accurate to 1/10 of a stop especially at high shutter speed like 1/1000 and up.
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If you do zone focusing then the chances are you never have a picturs in sharp focus. They may be OK focus but not tack sharp.
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How do you do it with the Canon lens? Besides why do you need to do zone focusing? You want to shoot very fast without having to focus?
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One thing I think that Pentax should make this film camera in Japan in order to have the kind of prestige assodiated with the Leica. Besides the film camera market is bigger in Japan and I think the Japanese like to bu Japanese made products.
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I know that the focal plane shutter has rolling shutter problem too but less so than many cameras electronic shutter. I really do not like the mechanical shutter but I wonder why by now only Nikon makes camera without mechanical shutter. (well I don't count things like cell phone or some P&S).
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So the Z8 is the second camera that has no mechanical shutter. So far I haven't heard of anyone complained about rolling shutter on the Z9 so electronic shutter works fine even without global shutter. I wonder when Canon and Sony will follow.
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Ambient + continuous lighting - Calculating EV
BeBu Lamar replied to blopin's topic in Lighting Equipment
In your example it's relatively easy as you give both the ambient and the light source EV8. The answer is EV9. But if you give them different values the calculation is much more involved. Let assume the EV value with all light source on is EVT, The first light source is EV1, second is EV2 and so on then the formula is EVT= log(2^EV1 + 2^EV2 + 2^EVn...)/log(2) -
To eliminate the mechanical shutter the readout must be very fast and I guess there is a trade off somewhat between dynamic range and readout speed.
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So it's the same with the Z9 which is good.
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I didn't see the frame rate for the Z8. What are they?
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My Beseler CB7 with dichroic head. I installed a color measuring system in it so it function more like the computerized version of the 45 dichroic head.
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The world doesn't stand still it turns around.
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The DW-30 cost as much as the F5 with the DE-30.
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I doubt that Ricoh/Pentax will be sucessful (Pentax didn't make any camera I would want since the transition to AF in the late 80's) but Leica has been sucessful. As I said Nikon customers are not those who would want such cameras.
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Didn't I say DARE? They lack the courage not technical know how because all those things requires less technical not more. For years to survive Leica had to market their products to certain type of customers and those customers are more likely to buy those cameras. Nikon customers (or Canon, Sony) are not like those and thus they don't dare to introduce camera like that.
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That is why so far only Leica could do it. I am not sure how sucessful Pentax will be. I am sure Nikon doesn't dare to go that route. The Nikon Df is as far as they dare to go. I knew it back in 2013.
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Yes you adjust for this 1/2000 mechanically and then after that you adjust for the 1/60 via a potentiometer. This potentiometer is supposed to set the shutter speed of 1/60 5 stops slower than 1/2000.
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The 1/2000 can't be released without battery power but it timed mechanically and not depend on the electronic time delay. To adjust for this speed it involves adjusting the spring tension and not electronic.
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I think Nikon counts on people like you who would definitley not want a monochrom only camera nor camera without AF or LCD. The cameras they offer today aren't all that difference from the one you bought before the Nikkormat.
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Leica doesn't have the problem because they have a business model that works well with low volume sales. I guess now that Pentax can't sell a lot any way they can do the low volume thing.
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When the electronic shutter speed control on the F3 fails it shoot at 1/2000. The 1/2000 is kind mechanical one.
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Film and B&W kinda have to stick together thsese days. It makes little sense if you shoot film and don't do your processing and doing your color processing today it's near impposible. I gave up when B&H stopped shipping RA-4 chemistry. There are certain things Nikon doesn't dare to to and I think monochrome is one of them and the other is a digital camera without the LCD and still another is a digital camera with no AF.
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You have your flash on?
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I don't think so. If they wanted they would have done it before when Leica had their Monochrome.
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I wonder how do they know that all speeds above 1/60 fire at 1/2000? Did they have a shutter tester?
