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12-07-2022, 05:37 PM | #31 | |||
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12-07-2022, 05:40 PM | #32 | |||
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12-07-2022, 05:40 PM | #33 | |||
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12-07-2022, 05:51 PM | #34 | |||
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12-07-2022, 06:04 PM | #35 | ||
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FG-X, does the Standard have a fixed lighting spec for boudoir photography - or is it a table based on BMI/age?
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12-07-2022, 06:47 PM | #36 | ||
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12-07-2022, 10:10 PM | #37 | ||
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As others have pointed out, your lighting design depends on its purpose. AS/NSZ 1680 provides a guide for this. While one has to pay for the standard, the most critical table is readily available on the internet. For example here;
https://australianbuildingservices.w...ghting-levels/ For example, if the garage is used for storage, the light level only needs to be around 80lx. If doing fine machine work, you will need around 600lx over the work area. Paint retouching, you will need around 800lx. The type of use determine how much light you will need. Keep in mind that it is OK to have, say, 80lx in most of an unused garage and a set of lights that gives 600lx over a workbench. The tricky bit is that light output is given in lumens and the light that falls on a worksurface is measured in lux. Fortunately, there are a number of online calculators that help do the maths. Like this one here ... https://www.rapidtables.com/calc/lig...alculator.html As an example, we have a garage that is 10 metres by 8 metres (80m2). For this exercise, we break that up into four areas, 5m x 4 m (20m2). Next, we select a typical 9W LED downlight from Bunnings. Looking on the side of the box we see it has an output of 740 lumens. Using the online calculator, we type in 740 lumens, set the area to be in square metres, set the surface area to be 20 m2, and hit calculate. The result returned is 37 lux, which is a bit low for a general garage. We probably want double that. If we break up the garage into eight areas (this means eight LED downlights); 2.5 x 2m (5m2), and re-run the calculation, we get an answer of 137 lux per square meter. This is well over 80 lux and more than acceptable. Just say there is a workbench at one end, with a work area of 4m by 1m (4 square metres). For a workbench we need the lighting level to be over 600 lux. We divide the bench into 4 blocks, each 1m2 (this means four LED down lights immediately above the bench). If we rerun the calculation, we get around 740 lux per square meter (which is above our target lux). Some tips; The lightning levels quoted in the standard are a minimum. It is better to have more light than less. The finer the work, the more light is needed. This is because your eye works on the same principle as a camera lens. More light allows the pupil to contract, increasing the depth of field that an object stays in focus. The older one gets, the more light is needed. This is because the eye looses its flexibility to adapt to a shallower depth of field. It is far better to have multiple lower power light sources than one very bright light source. |
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13-07-2022, 09:18 AM | #38 | ||
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An incredible amount of information has been given here, there's some real passion on this topic
to the OP let us know what you go out an buy
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13-07-2022, 09:34 AM | #39 | ||||
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13-07-2022, 12:11 PM | #40 | |||
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https://www.worksafe.vic.gov.au/reso...rk-environment Even though its in a compliance code with Worksafe Victoria they're only 'guidelines' and not 'law', they're 'recommendations' and if you follow said 'recommendations' you'll be complying with OHS legislation. I've worked in a dimly lit glorified 4000m2 Bunnings shed in the past with just a bunch of old-skool metal halide 400W high bay lights, what is barely adequate for a warehouse doesn't cut the mustard for an automotive workshop when you can't see what you're doing and even ends up with eye strain and migraines. |
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13-07-2022, 12:43 PM | #41 | ||
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Not that anyone ever actually reads the front of a standards book, but in there theres a bit for terminology. So the terms should and shall. Should is the recomended, but not law. Shall, thats the you have to do it.
Eye strain however. Theres a bit towards that really. So for example, lets use an automotive workshop. You grab tools from your toolchest which is well lit from above, you duck under the car on the lift that you are working on. So your eyes have to adjust because its dark under the car. So not so much an issue if you have what you need and arent constantly going from light to dark. Yes torches are great, but even still, theyre static sorta so leave ypur work light under the car then duck over to grab whatever, your eyes still need to adjust. Thats why i like headlamps. Yeah they are no fashion statement having one of them on your noggin, but it creates a constant, your eyes dont need to adjust as frequently. So from my proffesional experience predominantly working comercial. The people who 'complain' about eye strain are the ones sitting on the ends of work stations. They arent complaining. Its not too uncommon for offices to have dark carpet tiles to hide the fact the workers are grubs, yet the desk tops are white. So the persons on the end of the workstation, their eyes are constantly adjusting from when they look over to the dark carpet then back to the white desk. So the remidy for that isnt rocket surgury. Either put a dark mat thing on the desk, or a partition on the edge of the desk. You typically do not find as many eye strain issues with say an office that has brown woodgrain looking desks and beige or brown carpet compared to white desks and dark carpets. |
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