i went zaloon yesterday, he say hopefully will come in before cny, so jimlim, dun missed this out...else will be after cny

ps: I tested the 50mm sigma 1.4, duno if its worth it or not....zzz

so nice, bring tripod  , can i know shutter speed ?

yes bring tripod popfish!

EXIF f/8 | 13s | ISO 100 | Focal Length 16mm

Note that in the 3rd pic the background is the darkest. You can't do it with a pop up. You need to use manual & HSS mode. the light wouldn't be powerful enough to light up the background. You've gotta experiment though. Maybe 1/250 or 1/320 etc.

ur comment is correct, but the answer to the 3rd pic is wrong.

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Added on January 4, 2012, 9:34 pm

hi stinky, we all onces at your position, thinking, "range" covered by "range"... everyone once think but 18200 we dont need anymore lens.

you see, DSLR or interchangeable lens system, are designed in a way, LENS are for a Intend Purpose. each lens are design for a purpose, and if that purpose meet ur requirement, its the best lens for ur needs

the 1650 will give u very diff 'feel' of photo at 1650 working distant compare to 18200. well instead of telling u good to get or not, why not try discover why do u need 1650 by discovering the limitation of the 18200 and can be solve by 1650, then only that 1650 is worth investment else its waste of money.

ermm, flash in low-light and indoor-based
put it that way, i'm trying to fully utilize the built-in flash without creating the boring flattening/washout image

so, can i safely assume that with an external flash and proper settings, all the problem faced above can be minimized?

u are half right, half wrong. u understand the formula/theory but used it wrongly.

the pop up can last depending on iso, up to F16 for distant of 1 meter. so if i were to shoot 1/160 F16 iso800, i can get picture like the shown image, why need HSS?

Hmm, theorically it sounds logic. But practically? I'm not really sure. Meaning small aperture + higher ISO + 1/160 also can get same results as HSS?

Depend on working.distant, light fallout behave differently. Since you are near to subject, and in water behave diff (light travel slower) The setting I mention work but for normal situation, the formula work differently again. Like I mention, diff situation, diff setting.

Speed of light doesn't change wherever you go. It's just less light reaching underwater.

Speed of light doesn't change wherever you go. It's just less light reaching underwater.

Wrong.. the speed of light actually does change when travelling through different mediums where the density of the mediums differ...

ieR : Why u always got pretty model to shoot? I jelly!!!

Physics fail

C, the constant for speed of light is based in vacuum. Different density of the medium it is passing through gives different multiplying factor which slows the light down.

It is because of this you have your CA, fringing and what not, rainbow included. Because lens have different density than air (like duhh)..

Physics fail

C, the constant for speed of light is based in vacuum. Different density of the medium it is passing through gives different multiplying factor which slows the light down.

It is because of this you have your CA, fringing and what not, rainbow included. Because lens have different density than air (like duhh)..