|Posted: Sat Dec 16, 2017 1:16 pm Post subject:
|Hmmm. Well, OK. My B4 inquiry appears to have garnered a number of readers but no replies so far. I might as well tell you what I did. Please bear closely in mind as you read this I am "last of the big time spenders".
My FF dreams for Christmas evaporated after the help everyone very generously provided me here:
Following realization there are certain laws of physics even I am unable successfully to disobey or circumvent, I moved forward intent on violating other, different, laws of physics. However the new violation attempts, should I fail and fall short, will have come at FAR lower cost than purchase of a FF camera body. This entire B4 boondoggle is coming in at cost south of US$100. Also I get a new lens (I love lenses) and, some people at least have made a success of this approach! Sadly for me those people are a whole lot smarter than myself. So you can regard this very much as a student project.
First, the B4 lens. It's a beauty, to my eye anyway, but it was extraordinarily poorly described. There are not enough photos of the lens. However, I was able just barely to make out the critical "A" leading the model number. If I'm right, this is a 2/3" lens. If I'm wrong, well, I'm in a really bad spot. Here is the lens:
Click here to see on Ebay
On chance it might not be clear at first glance, that lens is a Fujinon TV-Z 9.5mm-152mm f1.8. I do not know yet exactly which model it is (see below).
Next there was the issue of the B4 adapter for a 2/3" B4 lens. These darn B4 adapters are expensive, but without an adapter you cannot use the lens. I posted yesterday about the great deal I was able to find here in the USA with the thought others might want to participate. Guess not, but here is the link anyway:
So there it is, the grand experiment. Further research indicates I will likely have to stop down to f4 to achieve decent color convergence, that lens being what it is and the laws of physics being what they are. Also, absent a "doubler" (we call 'em "teleconverters") I will not be able to fill my m4/3 sensor. I don't care. I just want to experiment a bit and have some fun. And I LIKE that lens.
For other, more rational, people:
I bought a pig in a poke. I'm hoping the lens is an Eagle II. It's probably not an Eagle lens at all. Clearly the lens is pre-HD and can be expected to be soft. I read somewhere these lenses can only resolve about 30 lines/mm.
However, it IS a parfocal zoom lens and I'm very intrigued by parfocal zoom lenses having zoom ratios over 10 to 1. So I will fool around with the lens, have some fun, and try to learn what I can.