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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 30 May 2012 (Wednesday) 19:39
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sekonic l358

 
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May 30, 2012 19:39 |  #1

just another odball question .. just purchased a new L358 and I was wondering when not useing the lumagrid where do you store so it won't get lost (no room in the case) .. or when useing it where do put the lumasphere ????


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Curtis ­ N
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May 30, 2012 20:08 |  #2

The lumigrid is in a little pocket on my camera bag. It's never been used.


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Eldorf_Dragonsbane
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May 30, 2012 20:09 |  #3

I actually store mine in the case with my L358. It will fit. Put the L358 in the case (lumisphere at the top of the case). Once its in you should have just enough room to fit the lumigrid into the case. while using the L358 I keep the lumigrid in the bottom of the case. The Lumigrid will also fit in the bottom of the case with the L358, though you will have the L358 extended slightly above the top of the case, though when you close the flap it will be covered and the velcro will catch and hold the flap shut.


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May 31, 2012 09:59 as a reply to  @ Eldorf_Dragonsbane's post |  #4

Dunno where mine is. Probably in the cupboard where I keep my camera gear.


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May 31, 2012 16:49 |  #5

Never used it, it is still in the box. :)


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Eldorf_Dragonsbane
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May 31, 2012 20:40 |  #6

I have used my Lumigrid a few times photographing some artwork that a friend painted, she was planning on having a virtual gallery of her artwork, unfortunately she never got around to getting the site made.

The Lumigrid is for reflective metering (like you cameras build in meter, reading all light being reflected back at the camera from your subject) where as the lumisphere is an incident metering (reading all light from the subjects position facing the camera).

The lumigrid works better on flat subjects such as paintings or clothing (hanging flat on a hanger and not on a subject) then using the lumisphere (when lighting with a constant light source). It is for these subjects that I chose to use the Lumigrid, where as for 3 dimensional subjects (people, buildings, still life, etc...) I use the lumispere (if I am using off camera lighting via flash).

Typically though my lumisphere stays either in the bottom of my L358 case or packed in next to the lumigrid (which is mounted on the meter). As I said the grid will fit int he case with the meter either in the bottom or next to the head of the meter.


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Jun 01, 2012 17:38 as a reply to  @ Eldorf_Dragonsbane's post |  #7

This is another reason why I like my 558 over the 358. There is nothing to lose.

Spot meter comes in handy also. :grin:


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Jun 01, 2012 17:44 |  #8

Eldorf_Dragonsbane wrote in post #14513801 (external link)
The lumigrid works better on flat subjects such as paintings or clothing (hanging flat on a hanger and not on a subject) then using the lumisphere (when lighting with a constant light source). It is for these subjects that I chose to use the Lumigrid, where as for 3 dimensional subjects (people, buildings, still life, etc...) I use the lumispere (if I am using off camera lighting via flash)..

Methinks you are confusing the need for a flat disk diffuser (LumaDisk) for photography of flat art; you do not use the Lumagrid for that.


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Eldorf_Dragonsbane
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Jun 01, 2012 19:34 |  #9

Wilt you are correct, what I meant to say was the Lumisphere is used in the retracted position for the paintings and other "flat" objects where as the Lumisphere extended is for the people, still life, etc... (metered from the subjects position). The Lumigrid is used to meter landscape, highly reflective surfaces or objects that create their own light (such as neon lights). I know its no excuse but I was tired from a long day at work and being caught in traffic (an hour drive took me 2 1/2 hours due to a traffic jam) and wasn't thinking straight (at the time it all sounded good when I was typing it out, now going back I can see my mistakes and that not all of what I typed {or though I typed} came out).

The Lumigrid does have its uses, as I have correctly stated above it is for landscape, if you cant get to your target to meter it due to distance or another reason, reflective objects and objects that generate light.

The lumisphere can be used to meter your off camera lighting, or "flat" objects such as art work (when the sphere is retracted, along with metering brightness differences and illumination levels in the retracted position). Most the time though you will be using the Lumisphere, though there will be times such as if you are trying to meter the above mentioned neon sign or say an office building that is composed of primarily windows,

Again I apologize for my incorrect post above stating the Lumigrid was used for "flat" objects, I did mean to say the Lumisphere in the retracted position. I was tired and again I know that is not a good excuse.


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Wilt
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Jun 01, 2012 21:56 |  #10

Excuse another correction, Eldorf. You seem to be blurring these modes in your explanations (and I want to clarify these points so as to avoid confusing others, who read this thread, with erroneous factoids)...


  1. 'incident light reading of normal scenes' (using the LumiSphere in extended position, 'incident light
  2. 'incident reading of individual intensities from multiple light sources' (using LumiSphere in retracted position)
  3. 'incident light reading for flat art photography' (using the LumiDisk)
  4. 'reflected light reading' of normal scenes (using Lumigrid)
  5. 'reflected light reading of flat objects' (using Lumigrid)


In practice there is no difference between 4 and 5. The real disadvantage of both 4 & 5 is that reflected light readings are subject to 'subject failure' (Kodak's term for subjects which are not averaging 18% tonality) induced meter error...and that occurs regarless of whether real world scene or flat art!

Your mention of neon signs is indeed a correct use of the LumiGrid, as in that case it is being treated as if it is effectively 'reflecting' light to the lens, and not the used of a light source which casts illumination upon a subject.

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