orthophotographically

The story

1. Proto-Indo-European*h₃er-
2. Proto-Indo-European*dʰeh₁-
3. Proto-Indo-European*h₃érdʰeti?
4. Proto-Indo-European*h₃erdʰ-
5. Proto-Hellenic*ortʰwós
6. Ancient Greekὀρθός (orthós)
7. Englishortho-
8. Proto-Indo-European*bʰeh₂-
9. Proto-Indo-European*bʰéh₂os
10. Proto-Hellenic*pʰáwos
11. Ancient Greekφᾰ́ος (phắos)
12. Ancient Greekφῶς (phôs)
13. Ancient Greekφωτο- (phōto-)
14. Proto-Indo-European*gerbʰ-
15. Proto-Hellenic*grə́pʰō
16. Ancient Greekγρᾰ́φω (grắphō)
17. Frenchphotographie
18. Englishphotography
19. Englishorthophotography
20. Englishorthophotographic
21. Proto-Indo-European*h₂el-
22. Proto-Indo-European*h₂élisder.?
23. Proto-Indo-European*leyg-
24. Proto-Germanic*līką
25. English todayorthophotographically

From orthophotographic + -ally.