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PostPosted: Fri Apr 20, 2012 6:39 pm 
First this strange looking 500mm thing from samyang, would it be good or astrophotography?

And would these macro lenses be any use,do they need another lens to attach to, keep in mind that i'm not that concerned about pro looking photos just yet, i just want to experiment.

This one for wide field astro?


PostPosted: Fri Apr 20, 2012 7:24 pm 
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Joined: Sun Nov 05, 2006 11:08 pm
Posts: 8003
Location: Germany
Hello lifeofbrian, and welcome to the friendly Camera Labs forum!
To enjoy your stay here please have a look at the house-rules!
If you are not too concerned with image quality you may very well experiment with this lenses.
An a more specific note:
- a 500mm mirror lens can actually be quite good as my review here reveals. But there are differences in image-quality from different manufacturers. And: this is a manual-focus lens only!
- close-up lenses that are cheap are almost sure to disappoint. Better get a so-called apochromatic close-up filter like the Canon 500D. It also pays to have a lens of 150-300mm focal length for using a close-up filter otherwise you will not see much of an effect. Btw.: sometimes those are called close-up filters as you screw them to the front of your lens. Wwatch out for getting a close-up filter with a filter-thread matching your lens!
- fixed focal lenses are pretty easy to build so almost anybody can manufacture something decent. But you never know. There are always people/companies out there that only want your money and don't deliver.
So as a final remark: I'd only buy if you can give the items back without a prohibitive "restocking fee" if you're not satisfied.

Good luck!

Thomas (beware: Nikon-fanboy and moderator!) My Lens Reviews, My Pictures, My Photography Blog
D810+assorted lenses

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