Chii Fei will probably be able to tell you but I think most CV hood has some sort of 'bayonet' mount so may not be able to use. You can try buying the screw-on hood that came with Elmar50mm (Product code 12550(black) or 12549(chrome)) or a generic screw-on one offered by heavystar on eBay: http://cgi.ebay.com/New-Metal-39mm-...78999QQcmdZViewItemQQ_trksidZp1742.m153.l1262
Hope this helps.
Got to see the external thread size. LH-1 & LH-2 screw on to the external thread of the lens mount. While, LH-4, LH-5 are bayonet mount that only fits 35/f2.5 PII & 40/f1.4 & 35/f1.4.