I am new to Tri-X and have been bracketing shots - one a full stop under, one a half-stop under, one at what I think the exposure should be, one a half-stop over, and one a full stop over. Developed in D76 1+1 @68-69 degrees for 10 mins.

To be honest, I see very little difference in the resulting negatives. Is that just a function of the "latitude" that is associated with this film?

For reference, and in the event it matters, exposure was determined by measuring the darkest area in which I wanted to retain shadow detail with a one-degree spotmeter and stopping down two stops.

Thanks in advance for any thoughts.