diff --git a/src/main/java/com/umc/naoman/domain/photo/controller/PhotoController.java b/src/main/java/com/umc/naoman/domain/photo/controller/PhotoController.java
index bb7e941..06aebf4 100644
--- a/src/main/java/com/umc/naoman/domain/photo/controller/PhotoController.java
+++ b/src/main/java/com/umc/naoman/domain/photo/controller/PhotoController.java
@@ -26,6 +26,7 @@
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.validation.Valid;
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.domain.Sort;
@@ -44,6 +45,7 @@
 
 @RestController
 @RequestMapping("/photos")
+@Slf4j
 @RequiredArgsConstructor
 @Tag(name = "03. 사진 관련 API", description = "사진 업로드, 조회, 삭제, 다운로드를 처리하는 API입니다.")
 public class PhotoController {
@@ -56,7 +58,10 @@ public class PhotoController {
     @Operation(summary = "Presigned URL 요청 API", description = "Presigned URL을 요청하는 API입니다.")
     public ResultResponse<PreSignedUrlListInfo> getPreSignedUrlList(@Valid @RequestBody PreSignedUrlRequest request,
                                                                     @LoginMember Member member) {
+        long startTime = System.currentTimeMillis();
         List<PreSignedUrlInfo> preSignedUrlList = photoService.getPreSignedUrlList(request, member);
+        long finishTime = System.currentTimeMillis();
+        log.info("PhotoServiceImpl.getPreSignedUrlList() 수행 시간: {} ms", finishTime - startTime);
         return ResultResponse.of(CREATE_PRESIGNED_URL, photoConverter.toPreSignedUrlListInfo(preSignedUrlList));
     }
 
@@ -71,7 +76,10 @@ public ResultResponse<SamplePhotoUploadInfo> uploadSamplePhotoList(@Valid @Reque
     @Operation(summary = "사진 업로드 API", description = "Presigned URL을 통해 업로드한 사진을 데이터베이스에 저장하는 API입니다.")
     public ResultResponse<PhotoUploadInfo> uploadPhotoList(@Valid @RequestBody PhotoUploadRequest request,
                                                            @LoginMember Member member) {
+        long startTime = System.currentTimeMillis();
         PhotoUploadInfo photoUploadInfo = photoService.uploadPhotoList(request, member);
+        long finishTime = System.currentTimeMillis();
+        log.info("PhotoServiceImpl.uploadPhotoList() 수행 시간: {} ms", finishTime - startTime);
         return ResultResponse.of(UPLOAD_PHOTO, photoUploadInfo);
     }
 
@@ -131,7 +139,10 @@ public ResultResponse<PagedPhotoInfo> getEtcPhotoListByShareGroup(@RequestParam
     public ResultResponse<PhotoDownloadUrlListInfo> getPhotoDownloadUrlList(@RequestParam List<Long> photoIdList,
                                                                             @RequestParam Long shareGroupId,
                                                                             @LoginMember Member member) {
+        long startTime = System.currentTimeMillis();
         PhotoDownloadUrlListInfo photoDownloadUrlList = photoService.getPhotoDownloadUrlList(photoIdList, shareGroupId, member);
+        long finishTime = System.currentTimeMillis();
+        log.info("PhotoServiceImpl.getPhotoDownloadUrlList() 수행 시간: {} ms", finishTime - startTime);
         return ResultResponse.of(DOWNLOAD_PHOTO, photoDownloadUrlList);
     }
 
@@ -144,7 +155,10 @@ public ResultResponse<PhotoDownloadUrlListInfo> getPhotoDownloadUrlList(@Request
     public ResultResponse<PhotoDownloadUrlListInfo> getPhotoDownloadUrlListByProfile(@RequestParam Long shareGroupId,
                                                                                      @RequestParam Long profileId,
                                                                                      @LoginMember Member member) {
+        long startTime = System.currentTimeMillis();
         PhotoResponse.PhotoDownloadUrlListInfo photoDownloadUrlList = photoService.getPhotoDownloadUrlListByProfile(shareGroupId, profileId, member);
+        long finishTime = System.currentTimeMillis();
+        log.info("PhotoServiceImpl.getPhotoDownloadUrlListByProfile() 수행 시간: {} ms", finishTime - startTime);
         return ResultResponse.of(DOWNLOAD_PHOTO, photoDownloadUrlList);
     }
 
diff --git a/src/main/java/com/umc/naoman/domain/photo/service/PhotoServiceImpl.java b/src/main/java/com/umc/naoman/domain/photo/service/PhotoServiceImpl.java
index 1fa0ebf..fe5c0ba 100644
--- a/src/main/java/com/umc/naoman/domain/photo/service/PhotoServiceImpl.java
+++ b/src/main/java/com/umc/naoman/domain/photo/service/PhotoServiceImpl.java
@@ -28,6 +28,7 @@
 import com.umc.naoman.global.error.BusinessException;
 import io.awspring.cloud.s3.S3Template;
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
@@ -46,6 +47,7 @@
 
 @Service
 @Transactional(readOnly = true)
+@Slf4j
 @RequiredArgsConstructor
 public class PhotoServiceImpl implements PhotoService {
     private final ShareGroupService shareGroupService;
@@ -146,6 +148,18 @@ private SamplePhoto checkAndSaveSamplePhotoInDB(String photoUrl, String photoNam
         return samplePhotoRepository.save(samplePhoto);
     }
 
+    /**
+     * 공유 그룹과 프로필을 검증 - select 쿼리 2
+     * 공유 그룹 get - 1차 캐시에서 가져옴. 쿼리 0
+     * S3에 사진이 있는지 검증 - 쿼리는 안나가지만, 시간이 소요됨
+     * Photo 엔티티 생성 수 save - 사진 개수만큼 쿼리 n
+     * ElasticSearch에 photos_es 벌크 insert - 쿼리 1(또는 0)
+     * 해당 공유 그룹의 프로필 목록 조회 - select 쿼리 1
+     *
+     * @param request
+     * @param member
+     * @return
+     */
     @Override
     @Transactional
     public PhotoUploadInfo uploadPhotoList(PhotoUploadRequest request, Member member) {
@@ -179,9 +193,12 @@ public PhotoUploadInfo uploadPhotoList(PhotoUploadRequest request, Member member
 
     // S3에 객체의 존재 여부 확인 및 DB에 사진을 저장하고 객체를 반환하는 메서드
     private Photo checkAndSavePhotoInDB(String photoUrl, String photoName, ShareGroup shareGroup) {
+        long startTime = System.currentTimeMillis();
         if (!amazonS3.doesObjectExist(BUCKET_NAME, RAW_PATH_PREFIX + "/" + photoName)) {
             throw new BusinessException(PHOTO_NOT_FOUND_S3);
         }
+        long finishTime = System.currentTimeMillis();
+        log.info("amazonS3.doesObjectExists() 수행 시간: {} ms", finishTime - startTime);
 
         Photo photo = photoConverter.toEntity(photoUrl, photoName, shareGroup);
         return photoRepository.save(photo); // 저장된 Photo 객체 반환