Camera shake is the bane of all photographers. We all have a low-grade "essential tremor" that only worsens with age, caffeine use or stress. This "essential tremor" is not to be confused with Parkinson's disease ! One excellent medical therapy that alleviates "essential tremor" is Inderal (propanolol.) The usual dose is 10 to 20 mg taken one hour before the putative photographic foray. Given inderal's short half-life, repeat doses are required every 6 hours. Please however contact your physician to make sure that this LOW DOSE of inderal is right for you as the medication can aggravate underlying diabetes or worsen a slow heart rate amongst other things. However, it is a very safe medication used therapeutically by tens of millions of people world wide for hypertension therapy.