Compositing in Premiere Pro has very low quality

i new premiere pro, , trying composite 30 different images (one image each light source). have tried using both exr , png file formats. in both cases compositing results has low quality. have settings maximum quality , full rendering quality preview. exported image, shows lot brighter , noisy compared same composite photoshop. need animate colors , brightness produce movie, , thought premiere pro allow me create high-quality composites. have tried same thing in after effects , got similar result. not want resort writing own program output compote frames since time consuming, , can't believe program premiere pro can't produce decent looking composites. shouldn't difficult, add the values each layer. sort of looks premiere pro trying tonemap final composite doing bad job. oddly, when viewing each layer separately (blend mode = normal), looks perfect. it's when start add layers awful image results. please tell me there setting somewhere premiere pro produce same quality photoshop.

 

result compositing in premiere pro cc 2017 blend mode = linear dodge (add):

 

result composting in photoshop cc 2017 blend mode = linear dodge (add):

have tried pushing dynamically linked after effects comp? seems ae might better bet compositing 30 images together. however, agree pp should able handle ps.

 

maybe add screen shot of settings , timeline?

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