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Glad to see an informed answer...answer's such as "no", or "I'd...break it" are worthless to people who come here to find answer's from experienced people...I assume the rest either don't really know, or don't feel the obligation to answer a question, but will post an answer just to bump their post count/ reputation, although they offer nothing to the knowledge base of this forum, or help the person with a legitimate question. And I hope I shamed those stupid answers such as "use as table leg's" and the rest, to hold their tongues if they have nothing to offer. Aside from jokes, etc...humor...these type of answers should take away credibility of the poser...er...I mean poster..To give an idea the base lens is 650mm long with an f stop of f8 - and that is fixed, so you can neither open it up wider nor stop it down further should you so desire. That makes it a slow lens at 650mm long.
It gets to the 1300mm by adding a 2*Teleconverter which doubles its focal length, takes away 2 stops of light (so now f16) and significantly reduces image quality.
The base lens itself is little more than a long distance landscape lens at f8 and its overall optical quality is very poor. The 2*TC is almost a total waste as it will really soften the overall image and at f16 your going to need some seriously bright lighting or have long exposures.
Glad to see an informed answer...answer's such as "no", or "I'd...break it" are worthless to people who come here to find answer's from experienced people...I assume the rest either don't really know, or don't feel the obligation to answer a question, but will post an answer just to bump their post count/ reputation, although they offer nothing to the knowledge base of this forum, or help the person with a legitimate question. And I hope I shamed those stupid answers such as "use as table leg's" and the rest, to hold their tongues if they have nothing to offer. Aside from jokes, etc...humor...these type of answers should take away credibility of the poser...er...I mean poster..To give an idea the base lens is 650mm long with an f stop of f8 - and that is fixed, so you can neither open it up wider nor stop it down further should you so desire. That makes it a slow lens at 650mm long.
It gets to the 1300mm by adding a 2*Teleconverter which doubles its focal length, takes away 2 stops of light (so now f16) and significantly reduces image quality.
The base lens itself is little more than a long distance landscape lens at f8 and its overall optical quality is very poor. The 2*TC is almost a total waste as it will really soften the overall image and at f16 your going to need some seriously bright lighting or have long exposures.
I'd rather see a well intentioned, misguided or wrong answer than something as stupid as some of these answers...
J.:er:
Glad to see an informed answer...answer's such as "no", or "I'd...break it" are worthless to people who come here to find answer's from experienced people...I assume the rest either don't really know, or don't feel the obligation to answer a question, but will post an answer just to bump their post count/ reputation, although they offer nothing to the knowledge base of this forum, or help the person with a legitimate question. And I hope I shamed those stupid answers such as "use as table leg's" and the rest, to hold their tongues if they have nothing to offer. Aside from jokes, etc...humor...these type of answers should take away credibility of the poser...er...I mean poster..To give an idea the base lens is 650mm long with an f stop of f8 - and that is fixed, so you can neither open it up wider nor stop it down further should you so desire. That makes it a slow lens at 650mm long.
It gets to the 1300mm by adding a 2*Teleconverter which doubles its focal length, takes away 2 stops of light (so now f16) and significantly reduces image quality.
The base lens itself is little more than a long distance landscape lens at f8 and its overall optical quality is very poor. The 2*TC is almost a total waste as it will really soften the overall image and at f16 your going to need some seriously bright lighting or have long exposures.
I'd rather see a well intentioned, misguided or wrong answer than something as stupid as some of these answers...
J.:er: