Canon 350D Multiplier Effect?

[just4uerik]

I recently purchased the Canon 350D with kit lens as well as a Canon 28-135IS. I love the camera and everything but i was told that the Canon 28-135 would perform like a 44-216mm because of the multiplier. I then compared it to my fathers old 1970s Nikon (which has a 70-210mm) lens on it and it wasn't even close. I comapred the different distances and my camera was actually performing like a 28-135. So how does the 1.6x multiplier come into effect? And why is it not effecting me? Could someone give me some ideas. Thanks.

[timmciglobal]

It does work as such...

Compare the 44 mm to the 70 mm setting it should be close.

Remember the viewfinder isn't same magnification so you would have to compare prints not viewfinder coverage/view size.

Tim

[just4uerik]

what do you mean that the magnification on the viewfinder is not the same. I thought that SLRs show you exactly what you are looking at through the lens. Is there some weird magnification on the viewfinder? I compared my 70mm on the 28-135 to his 70mm and they were basically identical. is the viewfinder not acurate? thanks

[timmciglobal]

The 70 MM setting on the BARREL of the 28-135 was same view as the 70 on the 35mm?

Well that's impossible don't ask me, your sure the magnification is the same, IE: the same "things" shown in the viewfinder? At one edge you see one thing exactly same as other?

It isn't true for my 28-135.

Tim

[just4uerik]

No, i was just looking at the size of the items. We were focusing in on a small clock. And at my barell 70mm it was the same as his 70mm. But maybe i am not understanding the 1.6x rule. Do things still look the same size on both but my field of view will be different? So i wounldn't be able to see as much on the sides of my pictues? I think that is what it is? can you verify that. Thanks.

[Warin]

The focal lengths dont change, just the apparent field of view.

With the 70-210 set at 100 degrees, the field of view will be 24.1 degrees.

With your 350D set at 100 degrees, the field of view will be 15.4 degrees.

If you are seeing the clock with the same amount of "stuff" around it, I am utterly flabergasted. I use an F80 and a D70s, and there is an obvious difference when swapping lenses between the two cameras.

The cool thing that I found is that the FOV crop gives me a free upgrade for my 300mm f/4 AFS lens, kind of like getting a 1.5 teleconverter!

[cwphoto]

what do you mean that the magnification on the viewfinder is not the same. I thought that SLRs show you exactly what you are looking at through the lens. Is there some weird magnification on the viewfinder? I compared my 70mm on the 28-135 to his 70mm and they were basically identical. is the viewfinder not acurate? thanks

Must be the viewfinder magnification then. It's quite common for cameras not to show the full captured frame - even down to around 90% (pro cameras come close to 100%).

The only other thing could be incorrect labelling on the lenses. Otherwise what you are describing is impossible.

[akysiev]

The 350D has about a 95% viewfinder coverage area. I know for a fact that on my 350D the 1.6 conversion factor does exactly what it says, multiplies the focal lengths rated on my lenses. I can't see how what you are describing is possible unless it is a misprint.

Edit: The effective focal lengths that is. Not like the lens actually multiplies everything by 1.6.

[RiCoChEt]

The 350D has about a 95% viewfinder coverage area. I know for a fact that on my 350D the 1.6 conversion factor does exactly what it says, multiplies the focal lengths rated on my lenses. I can't see how what you are describing is possible unless it is a misprint.

I totally agree from what information I have gathered. It most likely is a mistake.

[D70FAN]

Do I see chains being yanked here? :rolleyes:

[scalia]

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