difference result from bandpass and filter

I used 'bandpass' to design filter and return filtered data as shown

[filtered,df] = bandpass(az_croped,[0.5 1.5],100);

After I use that filter to filter the same signal with 'filter' function as below

filtered = filter(df,az_croped);

Then I compare 2 Signal, It seem very difference from each other as shown in picture.

Thank for your help.