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-   -   calculating the focal lenght (https://forums.steves-digicams.com/canon-21/calculating-focal-lenght-37280/)

Scrat Squirrel Nov 5, 2004 5:21 PM

Hey there !

I'm kind of a newbie and I was hoping to find here an answer. I have an A80 and I'm trying to figure out how to calculate the focal lenght of its lens. I've searched on the net .. but found nothin really convincing.

I would have to add that now I've purchased a wide lens along with 3 macro lens (+1, +2, +4). How does focal lenght modifies ?

Thanks in advance.

Scrat Squirrel Nov 7, 2004 6:38 PM

Hello ?? Will someone please answer my question ? At least tell me what's wrong. Is the question stupid, or is it just me ? :sad:
I would just like to know wether the question I'm asking is right and makes any sense ... if not, just tell it to my face ! :mad:I can handle it ... :shock:

Thanks to anyone who dares to answer my question ?

doru Nov 13, 2004 1:20 AM

I don't know how to calculate/ evaluate the effect of additional lenses but... why do you need this ?

the focal lenght of a "naked" A80 is 7.8-24.3mm which in 35mm equivalent is 38– 114mm so... from here I guess you can insist on the net...

http://www.navitar.com/zoom/cctv_how.htm

http://www.navitar.com/buhl/conversi...culations.html






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