From a618efe7826f725b26389698f2fd9922c0fa7293 Mon Sep 17 00:00:00 2001
From: Lawrence Lee <45837045+Lawrence37@users.noreply.github.com>
Date: Sun, 3 Sep 2023 15:30:42 -0700
Subject: [PATCH] Fix Lensfun corrections not available

Also search by exact match of lens model and name.
---
 rtengine/rtlensfun.cc | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/rtengine/rtlensfun.cc b/rtengine/rtlensfun.cc
index 58f3d12a3..3b5124947 100644
--- a/rtengine/rtlensfun.cc
+++ b/rtengine/rtlensfun.cc
@@ -455,6 +455,16 @@ LFLens LFDatabase::findLens(const LFCamera &camera, const Glib::ustring &name) c
     LFLens ret;
     if (data_ && !name.empty()) {
         MyMutex::MyLock lock(lfDBMutex);
+        if (!camera.data_) {
+            // Only the lens name provided. Try to find exact match by name.
+            LFLens candidate;
+            for (auto lens_list = data_->GetLenses(); lens_list[0]; lens_list++) {
+                candidate.data_ = lens_list[0];
+                if (name == candidate.getLens()) {
+                    return candidate;
+                }
+            }
+        }
         auto found = data_->FindLenses(camera.data_, nullptr, name.c_str());
         for (size_t pos = 0; !found && pos < name.size(); ) {
             // try to split the maker from the model of the lens -- we have to