Ducati Sporting Club UK > General > Idle Chat > Photo kit tips please

[YMFB]

Originally Posted by FiscusFish

That 170-500 also has a correction factor of 1.5 to be applied because of the the 400s smaller sensor doesn't it? That means you be getting a 250-750 zoom (1.5 correction?). That's piggin' huge... You'd have to be using a tripod to be getting anywhere near sharp pictures, which takes away the spontaneity a little. Lot of money to be spending if you get a real high proportion of blurry shots...

Modern tele-converters are supposed to be real good and would have to be a lot cheaper, plus lighter. Just a thought...

Darren

Is the correction factor of 1.5 only applicable to the lenses that were on the old camera ? or is that EF lenses and should I be looking for EFS lenses to get the best results ?

What is the difference between EF & EFS lenses

[Mutters]

Originally Posted by YMFB

Is the correction factor of 1.5 only applicable to the lenses that were on the old camera ? or is that EF lenses and should I be looking for EFS lenses to get the best results ?
What is the difference between EF & EFS lenses

I think the factor is 1.6 and gives the apparent focal length of any lens on the digital body, when compared to the same lens on a 35mm film body. So a 50mm appears to be 80mm, a 300 appears to be 480 ( and my 17mm acts like a 27 @rse! ).

The newer digital canons have a smaller mirror set further back into the body and can take the EFS lenses. These are physically longer and so can use smaller rear lens elements and so are a bit cheaper to make. But they wont fit all cameras- my 30D takes them but my 10D won't.
HTH

[YMFB]

Originally Posted by Mutters

I think the factor is 1.6 and gives the apparent focal length of any lens on the digital body, when compared to the same lens on a 35mm film body. So a 50mm appears to be 80mm, a 300 appears to be 480 ( and my 17mm acts like a 27 @rse! ).

The newer digital canons have a smaller mirror set further back into the body and can take the EFS lenses. These are physically longer and so can use smaller rear lens elements and so are a bit cheaper to make. But they wont fit all cameras- my 30D takes them but my 10D won't.
HTH

so what happens if i use my old zoom lense, is it better/worse than before, do I need a longer lense for motor racing and if i do how do you tell whether its the old type or new. sorry for somany q's

[Mutters]

Your zoom on the 400D will appear to be a 120mm - 480mm , fine for motor sport. You probably wont want anything longer. What costs is when you want wider appeture lenses- then it starts to get expensive.
EFS are always marked up as such and simply wont fit the older bodies.

[YMFB]

thats great news, will be testing it out at the first opportunity !