MamiyaJen: a word of warning to you and other messy housekeepers:
Your picture demands a response other than 'under the clip' and most will benefit from this caveat.
There is a LOT of dust in the back of your camera. Remember, the tiny 24 x 36 area is going to be greatly enlarged, along with all that dust, should some find a home on your film. I advise both you and all the others to look closely at the backs of your respective cameras with a magnifying glass in order to see how dirty your 'clean' camera really is! And do this FREQUENTLY. Without that magnifying glass you will be deceived!
And any who do not think that this is sound advice should suffer forever in a pool of Spotone. A brush and a breath works wonders but it has to be done frequently. Learn to be 'small', like that negative, and you will see many gremlins which deserve to be destroyed. - David Lyga