Camera lense question

[WeeDee]

It's also worth remembering, Dean, that the sensor on your 40D increases a lens' range by a factor of 1.6.

 

So a 28mm-135mm lens will perform like a 45-216mm lens.

 

You loose on the wide angle and gain on the telephoto.

[Tony Croft aka hamadryad]

not if he goes for ef-s rsange lenses! which are made specificaly for aps sized sensors!

[Dean Lofthouse]

Now I am confused

[WeeDee]

not if he goes for ef-s rsange lenses! which are made specificaly for aps sized sensors!

 

You are correct, Hama, about the dedicated design of the EF-S cameras - but the lens (even the EF-S ones) is still labelled in the 'traditional' form ie. for 35mm or fill sized sensors.

[Tony Croft aka hamadryad]

Basicaly dean your camera has a sensor the size of an old aps format film negative. whereas from a canon 5d upwards you get a full frame (35mm film format) sized sensor.

 

if you use ef lenses designed for the old film sizes you get a 10% gain at the telephoto end and a 10% loss at the wide end of the lenses range.

 

EF-S range lenses are designed to remove this issue, so you should buy these, but the ef lenses will still operate on your camera.

[Tony Croft aka hamadryad]

You are correct, Hama, about the dedicated design of the EF-S cameras - but the lens (even the EF-S ones) is still labelled in the 'traditional' form ie. for 35mm or fill sized sensors.

 

no they are not, hence the EF-S macro is a 60mm and the EF is 50mm!

 

EF-S 90mm

 

ef 100mm etc etc

[PeteB]

I got a Sigma DG 70-300 to fit my Canon 400D which is good if you are a long way away or bloody close to use the macro side. Good value and I was advised to get Sigma rather than Canon.

[Dave Martin]

And before we go any further can we just get this straight ... its LENS not LENSE

[John Hancock]

At the moment I'm looking for another lense for my camera, but dont know what I want, I do know I want a zoom with Image stabilisation

 

I have got a Canon 40d with a Sigma 17-35mm lense for portrait close up stuff

 

I am wanting something like 20-100 I think for longer range stuff ??

 

In other words what do I need

 

I’ve just bought a 70-200 Nikon Dean, its got image stabilisation and so-far the results are good. I was tempted to go for the pro model (all manufactures have a pro range) but couldn’t justify the big spend at the time.

[Dean Lofthouse]

Sorry LENS

 

I want to spend about £250 second hand but I reckon I'm going to struggle to find something on ebay at that