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  • Ikelite | Underwater Housings for Super Zoom Cameras
    more Size Super zoom cameras have to be bigger to accommodate larger diameter telescoping lenses This makes the housing large and bulky leaving less room in your luggage for lighting and other necessities like clothes Wide Angle Adding a wide angle wet lens to a compact camera housing is highly desirable underwater These lenses must be as close as possible to the lens of the camera for crisp and clear images Super zoom cameras change a lot in overall length throughout their zoom range while other cameras change very little If the wide angle lens is very far from the camera s lens the image will be blurry and will look like you re shooting through a port hole The Canon PowerShot SX30 s 24 840mm zoom lens moves a lot compared to the Canon PowerShot G7X s 24 100mm zoom lens Macro Zooming into the telephoto range 70mm and up makes small subjects appear larger in your image Shooting around a 100mm focal length is very popular underwater because it makes those nudibranchs and shrimps fill the frame Focal lengths above 200mm are rarely used underwater because the camera has to be farther away from the subject to obtain

    Original URL path: http://www.ikelite.com/support/articles/super-zoom-cameras-underwater.html (2016-02-17)
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  • Ikelite | Canon PowerShot G7X Dive Guide
    provide great versatility underwater while allowing external lenses to be effective A wide angle lens attached to the G7X will show a porthole effect at 24mm which can be left in for creative effect or cropped out to maintain maximum resolution and clarity Vignetting goes away around the 35mm equivalent mark and provides a wider angle of coverage than the native lens Use of the porthole effect at 24mm 2015 David Haas Vignetting is eliminated around 35mm equivalent zoom 2015 David Haas The Canon s lens is also overall brighter across its zoom range than the Sony competitor An astounding maximum aperture of f 1 8 at 25mm and f 2 8 at 100mm allows you to capture more light Great low light performance is important underwater as the sun s light is quickly absorbed as it passes through water making shooting at depth similar to shooting in a dimly lit room The RX100 Mark III is still the choice if video is your 1 focus But if you re really looking for a camera that does both stills and video well underwater then you won t be disappointed 2015 David Haas Take full control Manual exposure controls are essential in a high end point and shoot Canon provides the now expected front and rear control wheels to quickly change the most common settings in between shots for example shutter speed and aperture in Manual mode New to the GX7 both dial controls are gear driven in the housing This brings them into thumb and index finger reach of your right hand making exposure bracketing a breeze On the surface Canon gains a slight edge over Sony for ergonomics with larger buttons on the back of the camera that are a bit easier on big thumbs Unlike the other cameras

    Original URL path: http://www.ikelite.com/support/articles/dive-guide-canon-g7x.html (2016-02-17)
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  • Ikelite | Inside a Dräger Flashover Simulator
    and provides the only safe way to experience a flashover and recognize the signs that lead up to it Like the simulator our educational videos also teach flashover preparedness It s the sort of thing that saves lives A Dräger flashover simulator looks like two shipping containers welded together into a split level Because the bottom three feet of the unit could go up to 300 degrees fahrenheit trainees can be safe for a limited amount of time providing their safety gear is tight air tanks are filled and under NO circumstances do they stand up Firefighters casually refer to fire as The Beast and hopefully a flashover simulator will be the closest they ever come to it Here they learn to outsmart the beast and prevent flashover from taking their lives How not to melt your camera My challenge was straight forward capture photos and video of flashover without melting my equipment in the radiating heat In a first phone meeting Greg asked So you re really going to take your camera in there Sure I replied matter of factly Well GOD BLESS YOU This unit never saw flames it was used to test the Ikelite s temperature limits Apparently I wasn t the first to ever try this It was rumored that a major Hollywood studio built a 100 000 rig burned it on their first try and gave up completely I enlisted the support of a firefighter friend to help me find a system A quick YouTube search taught us that a number of firefighters had taken GoPros inside A GoPro in a flashover generally yields pretty bad footage no offense GoPro you re good at other things But at least some not all firefighters managed to escape without wrecking their equipment Since GoPros are designed to

    Original URL path: http://www.ikelite.com/support/articles/inside-drager-flashover-simulator.html (2016-02-17)
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  • Ikelite | The Shot | Clownfish
    e dual strobes The easiest way to set up for these will be to use two strobes pulled in close to your lens Then stop down the camera s aperture increase in f number as far as you dare and based on the power of your strobes Hopefully this will be around f 16 to f 22 or least f 11 because you need the depth of field to be as large as possible Depth of field is the range of distances from your camera s lens which are in focus and it might be only an eighth of an inch That means the center of the anemone is in focus but not the front or back of it Depth of field The tips of the anemone are in focus the clownfish slightly out of focus I use two powerful strobes Ikelite DS160s so I choose a low ISO between 100 and 160 and a shutter speed between 1 125 and 1 160 second Start out by wasting a frame Take a shot and preview it to make sure the anemone is well lit and gorgeous Now it s a waiting game these clownfish never stop moving so you will waste a lot of frames getting tail shots or heads turned This is where a DSLR will really shine because there is zero shutter lag With a DSLR you are looking through a glass window not at an LCD monitor so when you pull the shutter it s instant The clownfish will move in and out of focus depending on how far they are away from the lens Your key focus point should be the eye When previewing your work on these subjects learn how to zoom in on it If it isn t sharp you ll hate yourself for

    Original URL path: http://www.ikelite.com/support/articles/the-shot-clownfish.html (2016-02-17)
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  • Ikelite | Understanding Camera Settings | Aperture
    s aperture can still help you manipulate your results even when shooting in automatic scene modes Wide angle photography Our primary method of shooting wide angle involves fixing the camera s ISO and shutter speed then varying the aperture to balance the available light Whatever is in the foreground will be automatically properly exposed using your strobes TTL exposure as long as you re close enough Here are 3 different treatments of the same type of subject same time of day only the Aperture has changed None are wrong or right just different exposures When you think of aperture think of the water column available or natural light behind your subject A larger aperture smaller f number will provide a lighter background while a smaller aperture larger f number will provide a darker blue background Varying aperture from larger left to smaller right Edge sharpness In some cases a smaller aperture improves the edge sharpness of wide angle photos This is particularly useful to know when shooting with an external wide angle wet lens A photo taken at f 14 will have sharper edges than a photo taken at f 4 Macro photography The traditional macro approach is to stop down the aperture increase in f number as much as possible to increase the depth of field which is to say the range of distances which is in focus Typical apertures for macro photography are between f 16 and f 22 A small aperture lets very little light into the camera so your strobes will need to be powerful and close to your subject Varying aperture from larger left to smaller right Blacked out backgrounds A small aperture is also used to create those stunning shots of small critters on soft corals with black backgrounds The key is to choose

    Original URL path: http://www.ikelite.com/support/articles/understanding-camera-settings-aperture.html (2016-02-17)
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  • Ikelite | The Truth About Underwater Strobes
    average underwater strobe with a straight flashtube and no diffuser measures around 70 across a flat surface Underwater strobes with round flashtubes generally have a wider angle of coverage around 90 100 Measuring angle of coverage of the same beam pattern on a curved surface left versus a flat surface right It s probably no surprise that a straight flashtube produces a rectangular beam pattern and a circular flashtube produces a circular beam pattern The angle of coverage of a strobe with straight flashtube is narrower top to bottom than its quoted angle of coverage side to side This seems like a good thing because we shoot mostly rectangular images However our strobes are typically extended out at some angle from the housing The rectangular flashtube is usually positioned at some angle in relation to our frame This affects our effective angle of coverage A circular flashtube covers more area overall and maintains its full angle of coverage regardless of its orientation to the camera Wide angle lenses fit a lot more in a frame than macro lenses So in practice the difference is more obvious when attempting to evenly light a wide angle scene than a close up scene Beam patterns of two strobes with the same angle of coverage straight flash tube left versus a circular flash tube right With strobes angled at 45 the straight flashtube covers less area in top right and lower left corners of the frame Recycle Time The one big secret of the great underwater photographers they take A LOT of pictures Your odds of getting the shot will increase with the number of shots you take of any given subject The number of photos you can take depends on the shutter lag of your camera practically a non issue these days and the recycle time of your strobe Recycle time is the time it takes for a flash to charge up its capacitors and be ready to fire again for the next photo The recycle time is most affected by the type batteries the strobe is powered by We use AA batteries everywhere in our computer mouse our TV remote our flashlights and more In fact they re probably the most popular battery in the world for low draw electronic devices A strobe is a different animal though Unlike electronic devices strobes draw a huge amount of pulse current You can only get so much pulse current read energy power output out of even the best AA batteries The recycle time of a strobe powered by AA batteries will be in the 3 4 second range at best That s OK in systems where your strobe triggers off of the camera s flash which also takes a relatively long time to recycle For close up work a slow recycle time is less of a problem Many small critters will keep you waiting a while in between shots until they look just the right way A smaller strobe powered by AA batteries is

    Original URL path: http://www.ikelite.com/support/articles/the-truth-about-strobes.html (2016-02-17)
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  • Ikelite | Documenting Sea Shepherd Society
    Image 2014 Tim Watters To visit such places was a dream come true for a keen and relatively new photographer and on all of these trips I ve made sure not to pass up the opportunity to check out what lies below so I ve always brought my Ikelite gear along with me From all of my dives two stand out above the rest In 2011 I took a number of dives around the Galapagos Islands in search of sharks I was there to make a documentary on Sea Shepherds work in assisting the local authorities in upholding and enforcing the laws of the Galapagos Marine Reserve a place where thousands of sharks are illegally killed each year for the brutal and destructive shark fin trade Prior to a dive around the famous Kicker Rock we stopped by a shoreline and those new to diving submerged for the first time testing their gear Seeing a playful group of Sea Lions I decided to jump in with my camera and see if they were up for a play and they sure were Over the next 40 minutes I ducked and dived as multiple Sea Lions approached me playing with me projecting past me and one even stopping to offer me a recently caught and definitely dead fish I m not a fan of seafood so I kindly declined Only when the Captain of the boat yelled out to me did I leave my new friends It was probably the most fun I ve had underwater Image 2014 Tim Watters My most interesting dive took place in Antarctica over the Southern summer of 2013 2014 For over 100 days I sailed deep into the Ross Sea and the Southern Ocean Whale Sanctuary aboard the Sea Shepherd vessel the Steve Irwin as one

    Original URL path: http://www.ikelite.com/support/articles/documenting-sea-shepherd-society.html (2016-02-17)
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  • Ikelite | Cambodia De-Miner Divers
    the CMAC in conjunction with the Golden West Humanitarian Foundation has selected a strong group of de miners from 40 hopeful volunteers to become Cambodia s first elite salvage diving unit Background During the early 1970 s ships carrying large stockpiles of explosive ordinance to supply the Khmer Republic where sunk in the Mekong and Tonlé Sap rivers by the Khmer Rouge Many of these boats sit on the bottom of the Mekong river with unexploded ordinance inside This is not only a threat to local fishermen but also national and regional security Image 2014 Charles Fox Training The selected de miner are being trained not only to dive and recover but how to do so completely blind With depths of up to 30 meters and strong currents the Mekong and Tonlé Sap rivers are hostile conditions requiring both physical and mental strength and dexterity Photographer Charles fox has been working regularly in Cambodia since 2006 and relocated full time in 2012 Charles has followed the divers training for the last 18 months To be able to fully tell the story Charles needed to get into the water and dive down into the depths however this is only possible on training dives due to visibility which in the Mekong river will be virtually zero Charles needed to clearly capture the divers training in the sea and in the swimming pool and that s where Ikelite equipment came in handy To be able to really tell this story I had to be able to experience what the divers feel and understand the conditions The low visibility was certainly an issue but it makes for the perfect tone you look at the images and its dark moody and inhospitable I wanted to go some way to show how difficult this job is

    Original URL path: http://www.ikelite.com/support/articles/cambodia-de-miner-divers.html (2016-02-17)
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