[Iska]

Попробуйте так:

Скрытый текст

Код:

@echo off
setlocal enableextensions enabledelayedexpansion

set sSourceFolder=I:\DCIM
set sDestFolder=L:\Pict

for /f "usebackq delims=" %%i in (
	`2^>nul dir /b /a:-d "%sDestFolder%\*.jpg"`
) do if exist "%sSourceFolder%\%%~ni.DNG" (
	>nul 2>&1 copy /y "%sSourceFolder%\%%~ni.DNG" "%sDestFolder%\" && (
		echo Copy [%%~ni.DNG] from [%sSourceFolder%] into [%sDestFolder%].
	) || (
		echo Can't copy [%%~ni.DNG] from [%sSourceFolder%] into [%sDestFolder%].
	)
) else (
	echo Not found associated file [%%~ni.DNG] in [%sSourceFolder%].
)

endlocal
exit /b 0

[Altollis]

Спасибо, работает! Сейчас буду понимать, как)