Stacked Teleconverters - Page 2
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Old 04-28-2013   #11
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Default Re: Stacked Teleconverters

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Of course the big issue with stacking TC's is the light loss. Shooting at F/16 may be acceptable, but what ISO was needed to get acceptable shutter speeds? I see some small amount of noise in the shots, and was curious.

That in no way degrades these shots, it is awesome to try and know and the shots ended up coming out great. That loss of contrast and even that minor CA is a complete non-issue with today's photo editing software.
ISO 400, f/16, 1/50
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Old 04-30-2013   #12
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Default Re: Stacked Teleconverters

I love goofing with teleconvertors, you got some decent results. I've had lesser images come out of extreme circumstances but here's an image I took with a 80-200 2.8 mounted on a tamron/kenko 2x and 1.4x set of teleconverters. I shot it handheld bracing myself on a rock from a few miles away and heavily cropped it. Total math was 200*1.5*2*1.4=840mm on a D90, not including cropping in post. after a 12x crop it's basically the view from a 10080mm focal length.

While the image SUCKS...I got the image. I managed to find the vantage point and subject on google earth and it was about 5 miles from me.




I have other images that are better I believe but I just wanted to chime in that it's fun to try. I want to do more neat stuff with my 500mm mirror but since it's image quality is already pretty degraded by design, I haven't much initiative.
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Old 05-19-2013   #13
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Default Re: Stacked Teleconverters

My dream is to someday own a 200mm f2.0 and I would try to stack 2 teleconverts
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Old 05-20-2013   #14
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Default Re: Stacked Teleconverters

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My dream is to someday own a 200mm f2.0 and I would try to stack 2 teleconverts
I've had the 200mm F/2.0 VRII on my camera several times now... add a sturdy tripod to your dream, either that or wish for arms like Arnold so that you can hold it for more than 10 shots... lol


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