What's Exactly Is An Acromat And...?

Polanski

Polanski

Well-known member
I've been listening to the word achromat... I know it is a kind of a lens (macro) of whatever, but what is exactly its function in an adapter?
Does a camera having a macro or super-macro function need this too?
Please, I would really appreciate an explanation on this.

Thanks
 
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an achromat is similar in purpose to a macro filter in the sense that its allows you to shoot tiny objects very close to the front element of your camera lens. Its difference is that achromats are composed of more than 1 glass element and are specially coated to counter chromatic abberation, thus the name achromat.
A macro filter, when used with lens adapters produce soft edges and chromatic abberation (CA) in the sides of the image, this is characterized by a bluish purple and greenish or yellow outlines in the part of the image with strong contrast, such as a white shirt against dark background.

hope that helps.

Ted
 
So it is better to use an achromat instead of the macro that comes with the camera? If so...which is the best one on the market today?

Thanks
 
for certain cameras the macro on the camera lens might not be enough and the achromat is needed, like the DVX, FX1, HVX, HD100 and those with big lens threads.

For small camcorders, the achromat is not necessary.
 
theachromat is actually 2 macros, and a concave element that fits over one of them. it basically does what a macro alone does, but like glasses it re corrects teh rays of light through itself to eliminate CA.
 
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