Rollei IR400 not as sensitive?

Few weeks ago I shot a roll of Efke IR820. I liked the Woods effect but found it a tat grainy. Some of you mentioned the Rollei IR400 having finer grain. I gave it a shot and though I like the fine grain, I feel like the Wood effect is less visible. Could be due to using a different camera though.

________________________________________
Developed in Maco Ecoprint 1+100 Stand development 90´

사진작가:
sandravo
업로드:
2013-09-01
태그:
hoya ir park r72 summer sun villa white
카메라:
Fujifilm GA645 Professional
필름:
Rollei Infrared 400
도시:
haasdonk
국가:
Belgium
Year:
2013
Time:
afternoon
앨범:
More white greens!
More photos by sandravo