Location class |
This week’s research for location is more about the use of flash, in this case a monobloc unit, as a main source with daylight being used as a fill source. In other words, correct exposure will be based on the flash and daylight will be underexposed by two stops. 3.Flash exposure is affected/controlled by your choice of shutter speed. True / False?
§ You are photographing a subject in daylight where you wish the flash to be the main source and the daylight to be the fill at two stops less exposure than the flash exposure.
1. Using a light meter (as opposed to “oh I don’t know, any old exposure will do because I’m lazy or confused from a night out”) you calculate the ‘correct’ daylight exposure to be 60th @ f32.
2. Set up your monobloc as a main source and adjust the output and/or distance (and using your light meter) until correct flash exposure is f32.
3. Describe the resultant lighting if you exposed for daylight together with the flash on these settings.
4. Describe how you could now reduce the daylight exposure by two stops without affecting the flash exposure. Hint: don’t even think about touching the monobloc unit for this, the answer is much simpler. change the
5. Having done this, now describe the resultant image in terms of what the subject looks like and what the background, which is lit by the daylight, looks like. Oh come on, I’ve just about given you the answer. Lastly’ have a look at just about any editorial portrait and you’ll see this technique being used. |
| Studio class
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| § Do some basic research on tabletop small product photography and post this to your blog. Small products are things like electrical items, toys, kitchen/bathroom products, groceries but NOT raw or plated food items. Post a few different types of shots and comment on the lighting used. |
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Monday, August 29, 2011
Week 3 research
Week 2 research
Location class |
| 1.What does the term ‘bounce flash’ mean and why would you use this technique? bounce flash is a technique used that you direct the flash unit to be pointed at a white or light colour wall, and when it is set off it reflects the flash discharge in a different angle. you would use this because a flat flash straight is unappealing, we naturally dont look directly into lights 2.What does the term ‘fill-flash’ mean and why would you use it?. fill flash is the where you have a darker section on you image and use a flash to light the darker areas. you do this because if their is some unsightly shadow or the other light source is to strong 3.When working in daylight, how could you use flash as a main light and daylight as a fill, describe it? you can have your subject face you wile looking away from the sun so it causes them to be back lit, and use a soft flash to light there other side, this is would be a good example of fill flash. |
| Studio class
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| 1.When employing multiple flash exposures to a moving subject (like the Edgerton strobe photos) why is it important to photograph against a black background? it is important because every time the flash goes off it exposes and back ground, and if you have black background it reflects way less light as a white back ground. so if shooting on a white background every time the flash goes off it exposes the image more and more 2.In a given situation when one flash discharge is used the correct f-number to achieve correct exposure is f8. How many identical discharges would you need to achieve correct exposure when using f32?........... 5? 3.Explain your answer in the last question
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folio proposal
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Monday, August 15, 2011
week 1 questions
1.What shutter type is found in almost all small format DSLR cameras? (your camera)?There are 3 mian types of shutters the interlens shutter (leaf shutter), focal plane shutter and the sensor shutter. Most small format use the focal plane shutter, they use this shutter because its extremely accurate and reliable
2.What does the term flash synchronisation mean? The term flash synchronisation means how quickly the flash responds to the shutter being activated
3.What is the flash synchronisation speed for your camera?
4.What is the typical colour temperature (in Kelvins) of an electronic flash discharge? The typical range for kelvins for a flash is around 6000.This is according to my in camera information
5.What is the typical flash discharge duration of a contemporary portable flash unit? The typical duration for a portable flash is something around 1/250 anything flaster than this shutter speed you will see the shutter in the image
1.In terms of a studio flash unit, is there a difference between a generator and a power pack? there is no differences they are both the same thing
2.What is the unit or units of measurement that describes a studio flash output level? wats jouls/seconds
3.What is the difference between symmetrical and asymmetrical flash power output?A symmetrical flash power output is when generators can power two or more flash units and is measured in watt seconds and the total amount of power available is split equally between each flash unit. An asymmetrical flash power output is where each flash unit can be set to have different amounts of power which is also measured in watt seconds




