Because I refuse to use filters to "protect" the lens (although I do use them for other purposes when appropriate), I like to keep a cap over the lens between shots. This isn't possible with Sigma's lens hood, so I purchased a Chinese replica Contax GG-2 lens hood and cap finished in silver on eBay for cheap money and then painted them satin black to (sort of) match the DP-1. Here's a photo of the setup on my DP-1 along with the Voigtlander 28mm finder...
And here's a photo of it with the cap off...
The Contax hood is slightly deeper than the Sigma hood (which is a plus) and the inside has light dispersing rings milled into it and has been painted flat black (also a plus) as compared to the Sigma's unpainted, reflective plastic. On the other hand, a round hood is potentially less effective than a rectangular one, but I've used the Contax hood for a week now in the bright Arizona sun and have no complaints about its performance, so I'm not sure how much any of this really matters.
|Meet at HKCC Rain or Shine by pen araneae|
from Your City - Rain Down on Me
|Pregnancy Is Beautiful by sye46|
from Women's World
|Criss-Cross Traffic by PEB|
from Best Use of Motion
|Picking a Star in the Milky Way by vbuhay|
from My Best Photo of the Week