Sigma SD15

https://www.photoreview.com.au/reviews/dslr-cameras/advanced/sigma-sd15/

A well-built DSLR camera for photographers who want to work with raw files to obtain maximum image quality.It’s taken a while for Sigma’s SD15 to reach the market. First displayed at Photokina 2008 and then officially announced as a successor to the SD14 on 20 February, 2010, the SD15 has only just gone on sale locally. It offers a few updates to its predecessor but features the same Foveon X3 sensor, which has a focal length crop factor of 1.7x.

Sigma 180mm f/3.5 APO EX DG HSM Macro Lens

https://www.photoreview.com.au/reviews/lenses/full-frame/sigma-180mm-f35-apo-ex-dg-hsm-macro-lens/

A capable and value-priced macro lens with a good working distance for close-ups of invertebrates and other small subjects.Sigma’s 180mm f/3.5 APO EX DG HSM Macro is the only lens in its macro range with an HSM autofocusing motor – but only on the Sigma, Nikon-D and Canon mounts. Designed for use on full frame digital SLR cameras, but can also be fitted to DSLRs with smaller APS-C size sensors, where it covers a similar field of view to a 270mm lens when fitted to Nikon, Pentax and Sony cameras with 1.5x crop factors or 288mm with Canon DSLRs.

Sigma 105mm f/2.8 EX DG Macro Lens

https://www.photoreview.com.au/reviews/lenses/full-frame/sigma-105mm-f28-ex-dg-macro-lens/

An affordably-priced true macro lens with an ideal focal length for portraiture.The 105mm f/2.8 EX DG Macro sits in the middle of Sigma’s range of 1:1 true macro lenses. Keenly priced, it is designed for use with full frame digital SLR cameras, but can also be fitted to DSLRs with smaller APS-C size sensors. It covers a similar field of view to a 158mm lens in 35mm format when fitted to Nikon, Pentax and Sony cameras with 1.5x crop factors or 168mm with Canon DSLRs.