FIELD: photomaterials. SUBSTANCE: method involves addition to bromo-iodo-silver emulsion with 3 mol.% AgJ at mean size of silver halide microcrystals d = 0.08-0.18 mcm, pH = 5.9-6.3; pBr = 3.1-0.1 but before sensitizing dye 3,3'-di-γ-sulfopropyl-5,5'-dimethoxy-9-ethylthiacarbocyanine betaine (I) 
and activating agent (II) C2H5NH where K - 
or 1,1'-diethylquinomonomethine cyanine where 
; 
- TOS sensitizing agent (III) 
and activating agent (II) 
where: 
- TOS; 
or sensitizing agent (IV) C2H5 where R - 
; n = 1 or (V) 
and activating agent (II) 
at amount 1 mole activating agent per 1 mole sensitizing agent, and sensitizing agents (I) 
, (III) 
and (V) 
were added at amount 192 x 10-6 mole/mole AgHal. After addition of sensitizing agent (I) 
and activating agent (II) 
to emulsion pyridine salt of 3.3'-di-γ-sulfopropyl-9-methylthiacarbocyanine betaine (V) 
and activating agent (II) 
were added to emulsion at molar ratio 1:1, and sensitizing agents (I) 
, (II) 
, (III) 
, (IV) 
, (V) 
were added to emulsion at amount (128-750) x 10-6 mole/mole AgHal. Sensitization maximum of panchromatic fine-grained and superfine-grained emulsion is 650-660 nm. EFFECT: enhanced light sensitivity of emulsion. 3 tbl, 2 dwg
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