Subal Zoom ring - 4ZCS860 for Sigma 12-24/4.5-5.6 EX DG ASP. HSM
For manual focus and manual zoom lens tooth rings must be applied. SUBAL avoids the fastening with screws - and therefore deformation and damage of the lens with precise adjustment.
for Subal C40 / C50 / CD3 / CD5MII / CD500 / CD7