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> How many here use ev numbers when spot metering a scene? |
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#11
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I've never understood EV's. I know they provide another measure of light, but that's about it.
Can anyone SIMPLY explain why one would use EV's over the usual shutter speed and f-stop readings that are found on all (?) cameras? Terry S |
#12
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With the Rolleiflex I have, an MX-EVS, it's difficult to use the camera without EVs as the shutter speed dial and the aperture dial are both interlinked. Pushing a button in the centre of the aperture dial allows the link to be broken (the later model of MX-EVS has a better method of doing this). My late father's Voitländer Vito B also uses an EV interlock.
The external meter reading is taken and the EV number is dialled into the controls on the camera. As the controls are linked, then changing to a faster speed automatically alters the aperture to match (within the limits of the apertures and shutter speeds available to you camera, which in the case of the Rollei and Vito B isn't very wide). Choosing a slower speed opens the aperture. Changing the aperture alters the speed. It works quite well. |
#13
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Quote:
An EV is a light reading expressed as a number regardless of the shutter-speed/f-stop exposure. The pertinence of EV’s is that it’s simply the measure of light, incident or reflected, no more no less. What you do with it, lies at the heart of every photographer and every photograph.
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MartyNL “Reaching a creative state of mind thru positive action is considered preferable to waiting for inspiration.” - Minor White, 1950 Last edited by MartyNL; 20th October 2020 at 04:51 PM. |
#14
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"Tea is surely the king of all drinks. It helps against the cold, it helps against the heat,against discomfort and sickness, against weariness and weakness". Heinrich Harrer. |
#15
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Quote:
__________________
MartyNL “Reaching a creative state of mind thru positive action is considered preferable to waiting for inspiration.” - Minor White, 1950 |
#16
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I had just assumed that if you had bothered going all the way in to spot metering and EVs that you had already gone through SBRs/Zoning/Film Development. However, that is a massive assumption on my case. Martin |
#17
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Norm's explanation explains it easily to me, but is the amount of stops difference between light and dark the main reason to use EV's? I also understand that it is used in the Zone System, something else I've read about but never practiced, as I generally use rolls of film in 35mm or 120 format. Terry s |
#18
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I see EV's as more of a transferrable shorthand.
After all not everyone's EV12 equates to 1/30 @ f11 with 100ISO. Zoners will use it as a quick method of working out the brightness range and therefore what development changes need to be made for that film/exposure/developer and ultimately the visualisation that took place at the start. Mike |
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