Why Canon Not Make A General Extreme Zoom For Our SLR Cameras

thats a crazy idea comes to my mind
and i want yr Opinion

Why Canon Not Make A General Extreme Zoom For Our SLR Cameras?
like the Extreme Zoom in the compact camera PowerShot SX30 IS
so we can make some fun with it and it will be more cheaper than the expensive that we know
thanks

The SX30 IS has an sensor that is much, much smaller than the sensors used in dSLRs. This very small format has several disadvantages, but it does make it possible to create lenses with extreme focal length ranges that are no too crazy large or expensive.

An EF format lens covering the same basic AOV range and with the same maximum aperture would be extremely large, heavy and expensive. To start, check out the $2600 EF 28-300L IS to get an idea of what you are wishing for.

You would not want to carry the huge and heavy lens and you probably would not want to pay the price for it. This is assuming that it's made with decent optical quality and a reasonably "fast" maximum aperture like f/2.8 (the PowerShot SX30 IS max aperture is f/2.7).

Coz for that kind of focal range, IQ is compromised. A photographer should use different lens depends on what he is shooting and environment, if one lens is able to do everything, what's the point of DSLR with interchangeable lens feature.

thanks to all

i dont want a big zoom
i want from canon to make a general zoom in a small size

they made the lens:
EF 50mm f1.8 II (cheap and high quality)
they made the zoom:
EF-S 55-250mm f4-5.6 IS (cheap and high quality)

why they dont make a light and small from
24-840 ?
the same in the compact camera but for our full frame and crop sensers?

thanks

moltengold wrote in post #12781745
why they dont make a light and small from
24-840 ?
the same in the compact camera but for our full frame and crop sensers?

thanks

The simple answer is "because it would suck." If you don't care about image quality then you are better off sticking with a small and light super-zoom and skip the whole dSLR thing.

BTW, one very important thing you need to understand is that the aperture depends on the focal lenght and that very few cameras can autofocus unless the lens has an aperture that is at least f/5.6. An 840mm lens with a 5.6 aperture would have a front element that was at least 150mm in diameter so you might as well completely forget about any desires for "small and light." You can forget cheap too because even substandard lens elements that size will be pricey. You would not be able to find even a basic clear UV filter for less than $100.

moltengold wrote in post #12781745
thanks to all

i dont want a big zoom
i want from canon to make a general zoom in a small size

they made the lens:
EF 50mm f1.8 II (cheap and high quality)
they made the zoom:
EF-S 55-250mm f4-5.6 IS (cheap and high quality)

why they dont make a light and small from
24-840 ?
the same in the compact camera but for our full frame and crop sensers?

thanks

You don't want big zoom but you are mentioning 24-840mm ? What?

P&S camera is totally different in optic design, so as internal of the camera.

1000arms wrote in post #12781668
What image were you trying to post? All I can see in post #1 is a notice to "stop stealing bandwidth".

thanks

i removed the link for the image
and i didnt steal anything
this is a product image for the compact camera PowerShot SX30 IS
and u can see it everywhere
thanks again

moltengold wrote in post #12781745
thanks to all

i dont want a big zoom
i want from canon to make a general zoom in a small size

they made the lens:
EF 50mm f1.8 II (cheap and high quality)
they made the zoom:
EF-S 55-250mm f4-5.6 IS (cheap and high quality)

why they dont make a light and small from
24-840 ?
the same in the compact camera but for our full frame and crop sensers?

thanks

The Canon PowerShot SX30 IS camera does NOT have a 24-840 mm lens. It has a 4.3 - 150.5 mm lens. That makes a super-huge difference in how large the lens would have to be for an SLR, especially if you make the maximum aperture f/2.8 or so like I mentioned above.

thestone11 wrote in post #12781775
You don't want big zoom but you are mentioning 24-840mm ? What?

i mean i want a compact small zoom start from 24mm to 840mm
i can use it for our SLR Cameras

Isn't 18-200 is quite extreme?
Or 28-300L IS, 100-400L IS.
I do think it's quite extreme though.

moltengold wrote in post #12781791
i mean i want a compact small zoom start from 24mm to 840mm
i can use it for our SLR Cameras

Read the part I added to my earlier post in this thread. "compact small zoom that goes to 840mm" is simply not possible using currently available technology.

moltengold wrote in post #12781791
i mean i want a compact small zoom start from 24mm to 840mm
i can use it for our SLR Cameras

You are simply not grasping the point I made earlier. The SX30 has a very small sensor. This is why it is possible for the camera to have such a broad zoom range with such a compact lens.

It is not possible to make such a lens for a larger format, and anything even close would be extremely large, heavy and expensive.

That is the answer.

KVN Photo wrote in post #12781803
Isn't 18-200 is quite extreme?
Or 28-300L IS, 100-400L IS.
I do think it's quite extreme though.

they are good
but i dont want to buy a single 400mm or 500mm or 600mm or 800mm or 1200mm
they are Monsters in size

canon must make a compact small zoom with that range
so all canon user can buy it and use it

JeffreyG wrote in post #12781839
You are simply not grasping the point I made earlier. The SX30 has a very small sensor. This is why it is possible for the camera to have such a broad zoom range with such a compact lens.

It is not possible to make such a lens for a larger format, and anything even close would be extremely large, heavy and expensive.

That is the answer.

thanks a lot
but i hope Canon do what i wish