All Forum Comments
Comment by SteveEveritt posted on Sigma 600mm mirror at 30/06/2012 - 10:10
A TC adds glass which impacts your IQ unless you use good quality lenses with it.
To give you an idea here are some shots taken with a Sigma 600mm f8 mirror.
link
And here are some shots with a Sigma 70-200 f2.8 and a Kenko 2x TC
link
BTW The 600mm and/or the 2x TC could be for sale if your interested
Comment by SteveEveritt posted on mirror lens or a 2x converter at 29/06/2012 - 19:40
Thanks Mark it's a gem.
Steve
Comment by SteveEveritt posted on FS: Pentax-FA 1:1.4 50mm at 25/06/2012 - 20:01
Comment by SteveEveritt posted on FS: Pentax-FA 1:1.4 50mm at 21/06/2012 - 23:27
Comment by SteveEveritt posted on Even more falconry at 07/06/2012 - 22:37
Comment by SteveEveritt posted on Lemurs - Up Close & Personal at 07/06/2012 - 22:36
Example shot, I particularly like this image as there were people on the beach in the foreground that really emphasised the scale of the fireworks.
There are more examples on my flickr.

Comment by SteveEveritt posted on Firework Flops at 07/06/2012 - 22:19
Comment by SteveEveritt posted on Pentax AF 140c ring flash at 02/06/2012 - 16:08
Cheers
Steve
Comment by SteveEveritt posted on Pentax AF 140c ring flash at 31/05/2012 - 21:07
Comment by SteveEveritt posted on Soligor 400mm f6.3 M42 at 28/05/2012 - 23:17


Sigma Mirror Telephoto 600mm f8 S/N 204216
This lens is in very good / Excellent condition throughout, the bodywork is nice and clean with some normal usage marks.
Optically the lens is free of dust, fungus or scratches and is in full working order.
The lens comes with the original front and rear lens caps, lens hood and Sigma carry case which includes a bag of silica to prevent moisture which can lead to fungus when kept in warm dark environments, and the original instruction booklet.
Mirror lenses have the distinct advantage of being extremely compact and light in comparison to their equivalent focal lengths of standard lens design.
Great for wildlife and sports shots especially when combined with Catch in Focus.
When used on any of the APSC reduced-sensor Pentax digital SLR's this lens will equate to a 900mm telephoto.
Manual focus only - works in Manual Exposure Mode with a fixed aperture of f8 so good light required, although with the K5, Kr & K30 higher ISO capabilities this lens should be usable in less light.
Weight - 850g
Length (min / max) - 130mm / 145mm
Rear Filter Size – 22.5mm
Minimum Focus (in close focus (macro) mode) - 2.0m (achieves 1:3)
Aperture Range - F8 fixed
Price £120 inc. RMSD
Link to genuine shots taken with this lens
Lens pic
Comparison pic at 50mm
Unedited shot at 600mm from the same spot.