Usually the better lens are. If it is weathered seal it should be air tight like the L lens. As for fogging it is harder as there are too many factor that can affect that.
LOL you really think L lenses are airtight? Please read up a bit more.
Usually the better lens are. If it is weathered seal it should be air tight like the L lens. As for fogging it is harder as there are too many factor that can affect that.
L Lens should be. Cause I have seen someone on Line leaving the whole Canon 7D and L-Lens under his shower for testing. If water can go in air too will.
Splash-proofing a lens is VERY different from "air-tight". BTW, the physical properties of water and air are very different too.
Ha ha ha ha.... Every day we learn something new.... thks.
L Lens should be. Cause I have seen someone on Line leaving the whole Canon 7D and L-Lens under his shower for testing. If water can go in air too will.
Most of us learn this in primary school...
I don't understand why don't the lens manufacturer design the lens in such a way that it's air tight and doesn't cause fogging. cool right? Maintenance free.
Wah, which Primary school are u in??? I didn't know they teach about zoom Lens.
They teach about the different properties of water and air, and the surface tensile strength of water.
They teach about the different properties of water and air, and the surface tensile strength of water.
Hahaha, what u have referred is suface tension not tensile stregth.
Ha ha, so u really think they are so different?
For a air and water they are different but very close, as long as air can flow in water will too. The different is so small and only if u look at it from the micron level than u will be able to seperate water and air. Only way control this at constant pressure and testing parameters is to use a membrane where the pores of the membrane is so so so small in the scale of micro level that it only allow air in and not water. This material is so expansive and heavily patent that I am sure no camera company will use it in their lens.
So u think the camera maker is a membrane manufacturer?:bsmilie:
if L lens is water proof ...
i think i bathe with my lens everyday haha ...
den i can bring my camera + lens go snorkling WITHOUT buying EXPENSIVE underwater casing haha ... can save alot money + take WONDERFUL photo :bsmilie:
I don't understand why don't the lens manufacturer design the lens in such a way that it's air tight and doesn't cause fogging. cool right? Maintenance free.
Usually the better lens are. If it is weathered seal it should be air tight like the L lens. As for fogging it is harder as there are too many factor that can affect that.
L Lens should be. Cause I have seen someone on Line leaving the whole Canon 7D and L-Lens under his shower for testing. If water can go in air too will.
Then should be Water Resistant not water proof like:bsmilie::bsmilie:
Water Resistant does not mean you can go diving also... they are classified by their degree of water resistance to indicate how well can it is sealed against ingress of water + pressure.
L Lens (same type of Lens) will have diff price with diff. degree of water resistance.
30m +200
60m +350
150m +600
200m +850
This material is so expansive and heavily patent that I am sure no camera company will use it in their lens.
So u think the camera maker is a membrane manufacturer?:bsmilie:
The design is quite simple and a bit dated. Just look how much space there is between lens barrel and front element (which is rotating and extending during focusing).my new 50 1.8 has more dust than my zoom lenses. no idea why.