Forums
New posts
Search forums
What's new
New posts
New media
New media comments
New profile posts
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Nikon DSLR Cameras
D7100
EV values in display?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="WayneF" data-source="post: 308410" data-attributes="member: 12496"><p style="text-align: left"><span style="color: #000000"></span></p> <p style="text-align: left"><span style="color: #000000"></span></p> <p style="text-align: left"><span style="color: #000000">One can, and certainly I do and did, and will continue. EV is about numerical camera settings for equivalent exposure, and is NOT about any specific resulting exposure or light value. </span> It is about a NAME for the Equivalent Exposure combinations.</p> <p style="text-align: left"></p> <p style="text-align: left">.</p> <p style="text-align: left"></p><p></p><p></p><p>EV is much older than 20 years, Wikipedia says "The EV concept was developed in an attempt to simplify choosing among <strong>combinations of equivalent camera settings</strong>, by the German shutter manufacturer <a href="http://en.wikipedia.org/w/index.php?title=Friedrich_Deckel&action=edit&redlink=1" target="_blank">Friedrich Deckel</a> (<a href="http://de.wikipedia.org/wiki/Friedrich_Deckel" target="_blank">de</a>) in the 1950s".</p><p></p><p>i.e., EV is about camera settings.</p><p></p><p>Wikipedia (and others) say the Formal Definition is:<p style="margin-left: 20px"><img src="http://upload.wikimedia.org/math/3/6/7/367d07c30fbf0be40e354b3ba4a6bbb2.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="margin-left: 20px">where</p> <p style="margin-left: 20px"></p> <p style="margin-left: 20px"> N is the relative aperture (f-number)</p> <p style="margin-left: 20px"> t is the exposure time (“shutter speed”) in seconds[</p> <p style="margin-left: 20px"></p> <p style="margin-left: 20px">EV 0 corresponds to an exposure time of 1 s and a relative aperture of f/1.0. If the EV is known, it can be used to select combinations of exposure time and f-number, as shown in Table 1.</p> <p style="margin-left: 20px"></p><p></p><p></p><p>Of course, all of this is without any mention whatsoever of ISO or light value or exposure. Just how it is. EV is about numerical camera setting combinations, independent of ISO or light value.</p><p></p><p></p><p>But yes, sadly, I have to agree that we have greatly corrupted this original meaning since the internet, with all the newbies now throwing in their own comprehension problems with it. Not everyone gets it right, and then they confuse the rest. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> If we can't make sense of the original concept, then we do seem to imagine it must say ISO 100 somewhere (but it does not mention ISO). <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>So yes, this original correct definition is becoming unquestionably in the minority now, but here are a few sites that still understand it correctly:</p><p></p><p><a href="http://pixelogist.me/2012/09/04/exposure-value-and-exposure-compensation/" target="_blank">Exposure Value and Exposure Compensation | pixelogist.me</a> "So, you can always know that f2.8 and 1/15 will always be EV7."</p><p></p><p><a href="http://www.network54.com/Forum/258889/thread/1382701601/The+value+of+light...+Exposure+Value+defined" target="_blank">Photography Techniques and Equipment discussion: The value of light... Exposure Value defined</a> "<span style="font-family: 'Verdana'"><span style="font-size: 12px"><span style="font-family: 'Verdana'"><span style="font-size: 10px">In photography, the Exposure Value (EV) is a relationship between the f-stop and the shutter speed independent of ISO and Light Value"</span></span></span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 12px"><span style="font-family: 'Verdana'"><span style="font-size: 10px"></span></span></span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 12px"><span style="font-family: 'Verdana'"><span style="font-size: 10px"><a href="http://www.weatherscapes.com/techniques.php?cat=general&page=ei" target="_blank">Photography techniques: The EI (exposure index)</a> "It is important to note that the exposure index is <em>not</em> a direct measure of how well your film will be exposed, since it is independent of film speed." </span></span></span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 12px"><span style="font-family: 'Verdana'"><span style="font-size: 10px"></span></span></span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 12px"><span style="font-family: 'Verdana'"><span style="font-size: 10px"><a href="http://en.wikipedia.org/wiki/Exposure_value" target="_blank">Exposure value - Wikipedia, the free encyclopedia</a> (of course)</span></span></span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 12px"><span style="font-family: 'Verdana'"><span style="font-size: 10px"></span></span></span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 12px"><span style="font-family: 'Verdana'"><span style="font-size: 10px"></span></span></span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 12px"><span style="font-family: 'Verdana'"><span style="font-size: 10px"><span style="font-size: 12px">I too do prefer to honor the original correct definitions. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> </span></span></span></span></span></p><p></p><p>I'm sure neither of us is ever going to agree, so let's just leave it there. Nothing is going to change.</p><p></p><p></p><p>I will add this, from the 1700 page "Focal Encyclopedia of Photography", 1969 edition (45 years). Essentially all that was known at that time. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> The definition has been this way a long time.</p><p></p><p><img src="http://www.scantips.com/g2/ev.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p> </p><p>Hope it is readable (click it for slightly larger version). It shows exactly the SAME information as Wikipedia.. i.e., there is absolutely no mention of ISO or film speed. It is NOT about light value or absolute exposure. </p><p></p><p> EV is a name for the equivalent exposure combinations of numerical values of shutter speed and f/stop. Period. Most web sources today are simply wrong, which may be their preference to think they know, but we can't have newbies making up stuff. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="WayneF, post: 308410, member: 12496"] [LEFT][COLOR=#000000] One can, and certainly I do and did, and will continue. EV is about numerical camera settings for equivalent exposure, and is NOT about any specific resulting exposure or light value. [/COLOR] It is about a NAME for the Equivalent Exposure combinations. . [/LEFT] EV is much older than 20 years, Wikipedia says "The EV concept was developed in an attempt to simplify choosing among [B]combinations of equivalent camera settings[/B], by the German shutter manufacturer [URL="http://en.wikipedia.org/w/index.php?title=Friedrich_Deckel&action=edit&redlink=1"]Friedrich Deckel[/URL] ([URL="http://de.wikipedia.org/wiki/Friedrich_Deckel"]de[/URL]) in the 1950s". i.e., EV is about camera settings. Wikipedia (and others) say the Formal Definition is:[INDENT][IMG]http://upload.wikimedia.org/math/3/6/7/367d07c30fbf0be40e354b3ba4a6bbb2.png[/IMG][/INDENT] [INDENT]where N is the relative aperture (f-number) t is the exposure time (“shutter speed”) in seconds[ EV 0 corresponds to an exposure time of 1 s and a relative aperture of f/1.0. If the EV is known, it can be used to select combinations of exposure time and f-number, as shown in Table 1. [/INDENT] Of course, all of this is without any mention whatsoever of ISO or light value or exposure. Just how it is. EV is about numerical camera setting combinations, independent of ISO or light value. But yes, sadly, I have to agree that we have greatly corrupted this original meaning since the internet, with all the newbies now throwing in their own comprehension problems with it. Not everyone gets it right, and then they confuse the rest. :) If we can't make sense of the original concept, then we do seem to imagine it must say ISO 100 somewhere (but it does not mention ISO). :) So yes, this original correct definition is becoming unquestionably in the minority now, but here are a few sites that still understand it correctly: [URL="http://pixelogist.me/2012/09/04/exposure-value-and-exposure-compensation/"]Exposure Value and Exposure Compensation | pixelogist.me[/URL] "So, you can always know that f2.8 and 1/15 will always be EV7." [URL="http://www.network54.com/Forum/258889/thread/1382701601/The+value+of+light...+Exposure+Value+defined"]Photography Techniques and Equipment discussion: The value of light... Exposure Value defined[/URL] "[FONT=Verdana][SIZE=3][FONT=Verdana][SIZE=2]In photography, the Exposure Value (EV) is a relationship between the f-stop and the shutter speed independent of ISO and Light Value" [URL="http://www.weatherscapes.com/techniques.php?cat=general&page=ei"]Photography techniques: The EI (exposure index)[/URL] "It is important to note that the exposure index is [I]not[/I] a direct measure of how well your film will be exposed, since it is independent of film speed." [URL="http://en.wikipedia.org/wiki/Exposure_value"]Exposure value - Wikipedia, the free encyclopedia[/URL] (of course) [SIZE=3]I too do prefer to honor the original correct definitions. :) [/SIZE][/SIZE][/FONT][/SIZE][/FONT] I'm sure neither of us is ever going to agree, so let's just leave it there. Nothing is going to change. I will add this, from the 1700 page "Focal Encyclopedia of Photography", 1969 edition (45 years). Essentially all that was known at that time. :) The definition has been this way a long time. [IMG]http://www.scantips.com/g2/ev.jpg[/IMG] Hope it is readable (click it for slightly larger version). It shows exactly the SAME information as Wikipedia.. i.e., there is absolutely no mention of ISO or film speed. It is NOT about light value or absolute exposure. EV is a name for the equivalent exposure combinations of numerical values of shutter speed and f/stop. Period. Most web sources today are simply wrong, which may be their preference to think they know, but we can't have newbies making up stuff. :) [/QUOTE]
Verification
Post reply
Forums
Nikon DSLR Cameras
D7100
EV values in display?
Top
