Mirror Lenses?

Searching around I ran into these mirror lenses.  Specifically http://www.bhphotovideo.com/c/product/652411-REG/Vivitar__Series_1_500mm_f_6_3.html

I'm pretty new to photography and shoot a lot of motorsports.  I don't want to invest 1000s into a crazy zoom lens.  How would this compare? Has anyone ever used these before?  Should I just sell my first born to feed my craving to get good motorsports photos.  My longest lens right now is a Sigma 70-300 cheapo that I got at a consignment store.

Logged


If you haven't used one of those super expensive lenses; I might suggest renting one to see what the hype is all about. Once you've used one you'll want to save your money for a while and buy something you'll be happy with for a long time to come.
Logged

-John
Sarcasm, frustrating the clueless since 3000 b.c.
"There is no Un-Suck filter" David duChemin

Check out the new blog. http://www.jklebphoto.wordpress.com

but for a couple hundred bucks if it does the job right now.  Photography is a hobby and I look for something that gets good results without being expensive.  I won't have the money for one of those $6k lens anytime soon.
Logged


I haven't personally used a mirror lens, but I've never heard much good about them.  If money is a major issue, I guess you do what you have to do, but I think you'll end up unsatisfied in the long run.  The optics are not designed well for them at all.  I don't know what type of system you use, but there are some pretty good 400MM zooms for $1650 and less.  Still not as good as a prime, or even a top end zoom, but very good nonetheless.  They are still expensive, but not $6K.

Try looking into these:
http://www.bhphotovideo.com/c/product/207360-USA/Nikon_1996_80_400mm_f_4_5_5_6D_ED_AF.html
http://www.bhphotovideo.com/c/product/162616-USA/Canon_2577A002AA_100_400mm_f_4_5_5_6L_IS_USM.html
http://www.bhphotovideo.com/c/product/549256-REG/Sigma_737306_150_500mm_f_5_6_3_DG_OS.html
http://www.bhphotovideo.com/c/product/549248-REG/Sigma_728306_120_400mm_f_4_5_5_6_DG_OS.html
Logged


I thought about doing this, but after some research I found out that you really need A LOT of light for them to work well. In my overcast town, that's not going to happen. You also get some funny vignetting and A LOT of chromic aberrations.
Logged


For some reason I didn't see those sigma lenses.  This is why I always ask first.  $1000 is a lot more doable than $6,000. I'm a gotta have something now person usually but I think I'll be patient and get something I will be happier with for a longer time.

Thanks for the help!

Logged


I've used them a lot. They require more light than a traditional lens and there is a "funny" spot in the dead center sometimes. I have a celestron C5 telescope that doubles as a 1250mm lens. For you and what you shoot, ** This Lens ** you will love, Lets meet up and you can shoot with mine and see if you like it.
Logged

-----------------------------------
Between two evils, I always pick the one I never tried before. -- Mae West

Chattanooga Portrait Photographer BobEdens.com