that is me.Originally posted by firefox13
someone's selling off his Nikon TC-E3ED in the Buy & Sell section... can check out.
if you're testing out 3rd party (non-camera manufacturer) teleconverters, check that they perform to specs (or close to). I've tested a number of 2x teleconverters and they are only between 1.3 to 1.8x. Another 2.5x teleconverter easily available is only 1.5x.Originally posted by phero-man
er.... TC-E3ED is 3 X
TC-E2 is 2 X
Eagle is 5 X
there is also one by Tiffen at 2 X
and a Kenko 3 x
Wow! You essentially have a light amplifier! You DIY-ed a telescope?Originally posted by roygoh
The f-stop reduction effect applies for teleconverters that are inserted between the lens and the camera body type. Front-mount teleconverters don't necessarily reduce the f-stop, because there is flexibility in the len design (size, mainly) to compensate for the reduction in light captured when you reduce the angle of view.
From what I know, TC-E2 and TC-E3 are designed with the diameter that maintains the same in-camera f-stop setting. i.e., when you use either of these tele-converters, there is no f-stop reduction.
When I made my own scope for my CP995, the scope actually increased the effective apperture, such that the camera (in aperture priority mode) metered a higher shutter speed with the scope attached.
Yeap. Made one a few months back, using lenses bought from www.surplusshack.com and PVC pipes. The chromatic aberation wass too high. So I bought another front element lens which is supposed to be achromatic, but haven't the time to assemble that yet. You can read about it here:Originally posted by ckiang
Wow! You essentially have a light amplifier! You DIY-ed a telescope?
If you are talking about tele-converters with 2X or less magnification, they aren't really that expensive. I bought my TC-E2 in Singapore in Feb for ~$180. That was at least US$25 cheaper than in the States.Originally posted by chaotic
sounds cool... maybe I should make one instead of buying one.. they seem so expensive! :dunno: