Sekonic l-358 Lightmeter Question

Discussion in 'Exposure Discussion' started by Rinthe, Sep 6, 2009.

  1. Rinthe

    Rinthe Member

    Messages:
    215
    Joined:
    Sep 6, 2009
    Location:
    California
    Shooter:
    Medium Format
    Hello, i just got this used lightmeter from someone. I have a question about the aperture. It's currently on shutter priority mode right now, when i measure, theres a smaller number that shows up next to the aperture. the manual says its the 1/10 F Stop. But im a little confused, whats the point of that?

    any help would be great. Thanks
     
  2. MikeSeb

    MikeSeb Member

    Messages:
    1,062
    Joined:
    Jun 12, 2005
    Location:
    Prospect (Lo
    Shooter:
    Medium Format
    What, your camera doesn't have 1/10 stop increments? Loser!

    :smile:

    Good question. I think you can throw one of those little dip switches in the battery compartment to choose smaller increments--maybe 1/3?

    I guess some people need 1/10 stops, especially when metering studio strobes. But for us mere mortals, it does seem like overkill.

    I used to own that meter; when it was stolen I bought the L-758---and have been wishing ever since that I'd just replaced the smaller, more compact and simpler 358.
     
  3. Rinthe

    Rinthe Member

    Messages:
    215
    Joined:
    Sep 6, 2009
    Location:
    California
    Shooter:
    Medium Format
    thanks MikeSeb.

    "and have been wishing ever since that I'd just replaced the smaller, more compact and simpler 358." what? im a little confused here.
     
  4. Christopher Walrath

    Christopher Walrath Member

    Messages:
    7,114
    Joined:
    Dec 30, 2005
    Location:
    In a darkroo
    Shooter:
    Multi Format
    Wirelessly posted (BBBold: BlackBerry9000/4.6.0.167 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/102 UP.Link/6.3.0.0.0)

    He's just remarking on the 758's complexity. The owners manual will tell what those dip switches in the battery compartment will make the meter do in differet combinations.
     
  5. benjiboy

    benjiboy Subscriber

    Messages:
    8,120
    Joined:
    Apr 18, 2005
    Location:
    U.K.
    Shooter:
    Multi Format
    You can download the instruction book here http://www.sekonic.co.uk/Brochures.htm, as Mike says Its the way you configure the dip switches in the battery compartment so it reads to the nearest half stop, I use a 358 and it's a wonderful meter, enjoy.
     
  6. benjiboy

    benjiboy Subscriber

    Messages:
    8,120
    Joined:
    Apr 18, 2005
    Location:
    U.K.
    Shooter:
    Multi Format
    I chose the 358 because the L 758 has no ability to take general reflected readings only spot, I bought the 1 degree spot attachment for the 358, so I have the best of both worlds.
     
    Last edited by a moderator: Sep 6, 2009
  7. Rinthe

    Rinthe Member

    Messages:
    215
    Joined:
    Sep 6, 2009
    Location:
    California
    Shooter:
    Medium Format
    thanks guys for the help, yes i found the switches in the battery place.
     
  8. Andrew Horodysky

    Andrew Horodysky Member

    Messages:
    220
    Joined:
    Mar 18, 2009
    Location:
    Northern New
    Shooter:
    Multi Format
    Hi Rinthe,

    My apologies for going a little off-track here -- I don't have an answer to your question. My question is to you (and anyone else with experience with the L-358), and a little more self-serving... How do you like the meter, so far, as I'm looking to purchase the same one -- for ambient, incident readings, with potential for mixed ambient/flash, later on?

    Thanks.
     
  9. Rinthe

    Rinthe Member

    Messages:
    215
    Joined:
    Sep 6, 2009
    Location:
    California
    Shooter:
    Medium Format
    a.horodysky: np. I just got this meter 2 days ago so i haven't had much time to play with it. But i got a really good deal for it, only $50, i took it asap :smile: But i did do a lot of research on it, seems like most people are very happy about this meter. people here can probably tell you more :tongue:
     
  10. MikeSeb

    MikeSeb Member

    Messages:
    1,062
    Joined:
    Jun 12, 2005
    Location:
    Prospect (Lo
    Shooter:
    Medium Format
    In my first post I was bemoaning the larger size, more awkward handling, and greater complexity of the 758 vs. the 358. They are both very accurate and reasonably rugged, but if I were buying today I'd go with the 358.
     
  11. Rinthe

    Rinthe Member

    Messages:
    215
    Joined:
    Sep 6, 2009
    Location:
    California
    Shooter:
    Medium Format
    thanks for the clarification. :smile:
     
  12. Brandon D.

    Brandon D. Member

    Messages:
    204
    Joined:
    Jul 4, 2008
    Location:
    USA
    Shooter:
    Medium Format
    They are there for accuracy, i.e., for picky people like me, who use fractions of f-stops.

    For example, let's say I'm out shooting flowers on a roll of Ilford Delta 100 and so is my friend, Bob. Bob rates his Ilford Delta 100 normally, at E.I. 100. However, I prefer to rate mine at E.I. 160 which is 2/3 of a stop higher than E.I. 100 (or approximately 6/10 of a stop higher, which is the way the meter understands it).

    With the L-358 set at ISO 100, Bob meters the light falling upon a flower, and the meter provides an incident reading of 1/125th @ F/5.6. But because I rate my film at E.I. 160, I could not use that reading because the meter is set for ISO/E.I. 100. Instead of using F/5.6, I would "close down" the aperture 2/3 of a stop to F/7.1.

    If I move the meter's "ISO 1" dial from 100 to 160, the meter will read "F/5.6 & (6/10)" (because we have added 6/10 of a stop to F/5.6) which is F/7.1.

    Let's say that another friend, Carol, joins us. And let's say she rates her film at E.I. 125. In relationship, she rates her film 1/3 higher than Bob but 1/3 lower than me. If we set the meter's "ISO 1" dial to 125, the aperture reading will change to "F/5.6 & (3/10)" which is F/6.3.

    From memory, here are some approximate equivalents:

    F-STOP = SEKONIC READING
    F/2.0 = F/2.0
    F/2.2 = F/2.0 & (3/10)
    F/2.5 = F/2.0 & (6/10)
    F/2.8 = F/2.8
    F/3.2 = F/2.8 & (3/10)
    F/3.5 = F/2.8 & (6/10)
    F/4.0 = F/4.0
    F/4.5 = F/4.0 & (3/10)
    F/5.0 = F/4.0 & (6/10)
    F/5.6 = F/5.6
    F/6.3 = F/5.6 & (3/10)
    F/7.1 = F/5.6 & (6/10)

    F/8.0 = F/8.0
    F/9.0 = F/8.0 & (3/10)
    F/10.0 = F/8.0 & (6/10)
    F/11.0 = F/11.0
    F/13.0 = F/11.0 & (3/10)
    F/14.0 = F/11.0 & (6/10)
    F/16.0 = F/16.0
    F/18.0 = F/16.0 & (3/10)
    F/20.0 = F/16.0 & (6/10)

    ... and so on!
     
  13. Rinthe

    Rinthe Member

    Messages:
    215
    Joined:
    Sep 6, 2009
    Location:
    California
    Shooter:
    Medium Format
    thank you brandon for the detailed explanation, i think i'm starting to understand this. but not all cameras have 1/3 stops right? i have a canon ae-1 and it looks like i only get 1/2 stops. Also, theres a switch on the back of l-358 that i can turn on to make it display 1/3 stops. so it'll display, 4.5, 5, 5.6, 7.1 etc.. i guess the 1/10 is for even more precision? maybe sometimes it'll show 1/10 or 2/10? sorry if these are stupid questions, im a newbie :tongue:
     
  14. Sponsored Ad
  15. Nick Zentena

    Nick Zentena Member

    Messages:
    4,679
    Joined:
    Nov 21, 2004
    Location:
    Italia
    Shooter:
    Multi Format
    Some one asked about the 358in general. I have the 358 and the newer 558 [558??] In my mind the only reason to buy the 358 instead of the 558 is if you are SURE you'll never need a spot meter. he mentioned 1degree adapter for the 358 adds a fair bit of cost to the 358. I don't see the point with the release of the 558. The 358 OTOH is great if you don't need a spot meter.
     
  16. benjiboy

    benjiboy Subscriber

    Messages:
    8,120
    Joined:
    Apr 18, 2005
    Location:
    U.K.
    Shooter:
    Multi Format
    The L358 plus the spot attachment if bought new is much cheaper than the L558 or 758, and if Rinthe only paid $50 for a meter that costs about six times that new, since he/she ? is a newbie, and probably wouldn't know what to do with a spot meter anyway, this was a great buy.
     
  17. Rinthe

    Rinthe Member

    Messages:
    215
    Joined:
    Sep 6, 2009
    Location:
    California
    Shooter:
    Medium Format
    yeah i can get the 1" lumigrid if i want to use a spot meter, but incident metering is good enough for now :smile:
     
  18. benjiboy

    benjiboy Subscriber

    Messages:
    8,120
    Joined:
    Apr 18, 2005
    Location:
    U.K.
    Shooter:
    Multi Format
    Ritthe the Lumigrid is the general reflected light reading attachment that should come with the L358 not the spot attachment, check the instruction book.
     
  19. John Koehrer

    John Koehrer Subscriber

    Messages:
    6,055
    Joined:
    Apr 3, 2004
    Location:
    Montgomery,
    Shooter:
    Multi Format
    In fact MOST cameras do not have 1/3 stop indcators.
    1/10 stop change is nice if you're marketing a meter but most people can't use it anyway since neither your shutter or lens is calibrated to use it. Any use of 1/10 is by gosh and by golly or wishful thinking. To explain it a little more easily(?) if the indicated reading is Xsec@f2.2 you're just opening the lens on the camera to f2 & a little bit.
     
  20. benjiboy

    benjiboy Subscriber

    Messages:
    8,120
    Joined:
    Apr 18, 2005
    Location:
    U.K.
    Shooter:
    Multi Format
    I use mine a great deal with studio strobes and as Mike Seb wrote many of the modern ones have the ability to adjust the light output in 1/10 of a stop increments, and since the light several flashes is cumulative it enables precise exposure setting. The full title of the meter is the Sekonic L -358 Flash Master , and I find it to be one of the best flasmeters i've ever used.
     
    Last edited by a moderator: Sep 8, 2009
  21. Chan Tran

    Chan Tran Member

    Messages:
    2,243
    Joined:
    May 10, 2006
    Location:
    Aurora, IL
    Shooter:
    35mm
    Most newer cameras (in the past 10 years or so) do have 1/3 stop increment for both shutter speed and aperture.
     
  22. John Koehrer

    John Koehrer Subscriber

    Messages:
    6,055
    Joined:
    Apr 3, 2004
    Location:
    Montgomery,
    Shooter:
    Multi Format
    You're correct, I forgot the newer cameras have the 1/3 stop settings. But, they still have shutter tolerance that can be as much as 25% +/- and still be within spec.
    The electronic shutters are more consistent and accurate than mechanical but still the probability that you can get exposures within that 1/10 stop is pretty slim.

    With studio flash exposure is done with the lights, not the camera so the exposure can be more accurate.
     
  23. benjiboy

    benjiboy Subscriber

    Messages:
    8,120
    Joined:
    Apr 18, 2005
    Location:
    U.K.
    Shooter:
    Multi Format
    Just about all the leading modern digital meters Gossen , Sekonic, Kenko, can read to 1/10 of a stop, both for ambient and flash light.
     
  24. robertmgray

    robertmgray Member

    Messages:
    21
    Joined:
    Sep 13, 2009
    Shooter:
    4x5 Format
    Hey, if I was to use a meter solely for spot metering, would it be more practical to buy the 358 and the spot add-on, or the 758? I know the 758 has it built in, was just curious as to how they compare in spot.
     
  25. robertmgray

    robertmgray Member

    Messages:
    21
    Joined:
    Sep 13, 2009
    Shooter:
    4x5 Format
    I've calculated it and they're about the same price, so I might end up going with the 758.
     
  26. Nick Zentena

    Nick Zentena Member

    Messages:
    4,679
    Joined:
    Nov 21, 2004
    Location:
    Italia
    Shooter:
    Multi Format
    Compare the features and sensitivy. Sekonic provides all the info. The 758 will have more.