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Author Topic: Nikon lens question  (Read 2205 times)
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« on: August 22, 2012, 08:10 AM »

my grandson looked at my 500mm lens and asked why I just didn't put a telescope eyepiece on it...seen them and don't know anything about them...saw a program showing a movie director holding a lens with an eyepiece on it...guess this is what my grandson was referring to...   any ideas?
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« Reply #1 on: August 22, 2012, 11:02 AM »

A telescope eyepiece would work to a degree.

Mainly, you must match these 2 parameters:

1 The distance from the final lens glass to the sensor

2 The final lens useful diameter so that you will cover the entire sensor

When you do both of those things, you will have your 500mm lens, not

a telescope eyepiece.

I am open to corrections as it has been a while since I worked with optics.

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« Reply #2 on: August 22, 2012, 01:23 PM »

I misunderstood.

It read as if you wanted to use a hunting rifle type telescope lens to your camera.

My apology.

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« Reply #3 on: August 22, 2012, 03:23 PM »


Pretty sure it's not helping  Roll Eyes... but they did make a 'thing', the Nikon lens scope converter & apparently they're hard to get as well...

Yep pretty sure I'm not helping Wink


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« Reply #4 on: August 22, 2012, 04:20 PM »

Love this paragraph in the link above:

"If you are an idiot you can use it to make your 16mm fisheye into a potent 1.6x telescope, and your 8mm fisheye into an 0.8x reducer, and your exotic 10mm OP fisheye into a 1.0x scope. A better way to make a 1x scope is to use a toilet paper tube and no glass!"


"I haven't failed. I've just found ten-thousand ways that won't work."   -Thomas Edison
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