Small sensor Crop factor Q's

Aod · 22 May 2007 at 22:16

i intend to buy an EOS 400d sometime soon (in the next few weeks) and then save up and buy a nice (read: expensive) lens later when i can afford it.

i've been doing some reading and read that the 400D has a smaller sensor that causes a 1.6x crop factor.

so, my question is, does that mean that a lens like the Canon 24-70m 2.8L will become equivalent to a 38.4-112mm lens on a full sensor size camera?

ichabod crane · 22 May 2007 at 22:19

that is correct, i havent found any problems with crop factor so far

glitch · 22 May 2007 at 22:46

Aod said:
so, my question is, does that mean that a lens like the Canon 24-70m 2.8L will become equivalent to a 38.4-112mm lens on a full sensor size camera?

Just to add to what ichabod has said, every lens (yes, even the EF-S range) shows the focal length on a full-frame sensor (or 35mm) and you need to multiply that by 1.6 to get the effective focal length.

Great for getting extra reach out of cheaper zooms and telephotos, rubbish for wide-angle.

King4aDay · 22 May 2007 at 22:50

glitch said:
...rubbish for wide-angle.

Thats why the good folks at Sigma make the 10-20

glitch · 22 May 2007 at 22:53

And the lovely people at Canon make the EF-S 10-22mm. I loved that lens when I had it - really felt like L quality glass without the little red band.

Aod · 23 May 2007 at 02:30

and thats why its a good thing i don't like wide angle photography.

olv · 23 May 2007 at 04:52

Aod said:
and thats why its a good thing i don't like wide angle photography.

blasphemy!

glitch · 23 May 2007 at 06:52

I'll get the flaming torches, olv, you grab the pitchforks and meet me outside.

Aod · 23 May 2007 at 14:43

protects self with Canon 600mm F4L Telephoto lens. *Back you demons, you might want me but you'd never risk the Lens!