Photography

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c/photography is a community centered on the practice of amateur and professional photography. You can come here to discuss the gear, the technique and the culture related to the art of photography. You can also share your work, appreciate the others' and constructively critique each others work.

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Why are tele converters so extremely expensive? (www.bhphotovideo.com)

submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]

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I got the new Sony 70-200 mm F4 Macro G OSS II and it's amazing, even though very expensive. Anyway while looking at all those YouTube videos about it people were very often mention that it's compatible with tele converters and you'd get basically double the size lens (with half the light) + 1.0 macro instead of 0.5. Sounds amazing, and it looks like just a little bit of a short pipe which makes the lens to be a bit further away from the sensor.

I was thinking that it would be neat to get one, but when I looked at the prize, oh my god, $548. I don't get it, so what makes it so expensive?

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[–] Zak 12 points 1 year ago

It isn't a pipe; it's a lens. 8 elements in 5 groups, and it has to be sharper than the average lens to minimize the impact on image quality since it's doubling the size of any imperfections.

Simple tubes with electronic passthroughs let you focus closer, but do not directly magnify the image. Those cost $30 for cheap ones and $100 for fancy ones for your mount on Amazon.