From 6234b68b7e2769c7fa74093b05a9baaf11e7e738 Mon Sep 17 00:00:00 2001
From: Elijah Parker <elijahparker@gmail.com>
Date: Thu, 4 Aug 2022 16:05:22 -0500
Subject: [PATCH] adding Sony A7IV

---
 camera/ptpjs/drivers/olympus.js | 3 ++-
 camera/ptpjs/drivers/sony.js    | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/camera/ptpjs/drivers/olympus.js b/camera/ptpjs/drivers/olympus.js
index 231a8274..24c12519 100644
--- a/camera/ptpjs/drivers/olympus.js
+++ b/camera/ptpjs/drivers/olympus.js
@@ -34,7 +34,7 @@ function exposureEvent(camera) {
     if(!camera._expCache) camera._expCache = {};
     var update = false;
     for(var k in camera.exposure) {
-        if(camera.exposure[k].ev != camera._expCache[k]) {
+        if(camera.exposure[k] && camera.exposure[k].ev != camera._expCache[k]) {
            camera._expCache[k] = camera.exposure[k].ev;
            update = true; 
         }
@@ -1078,6 +1078,7 @@ driver.setFocusPoint = function(camera, x, y, callback) {
 
 driver.setLiveviewSize = function(camera, w, h, callback) {
     var liveviewSize = camera.config.liveviewSize;
+    if(!liveviewSize) return callback && callback("not supported");
     liveviewSize.x = w;
     liveviewSize.y = h;
     var newSize = (w << 16) | h;
diff --git a/camera/ptpjs/drivers/sony.js b/camera/ptpjs/drivers/sony.js
index c2dc219a..b9849270 100644
--- a/camera/ptpjs/drivers/sony.js
+++ b/camera/ptpjs/drivers/sony.js
@@ -69,6 +69,7 @@ driver.supportedCameras = {
     '054c:0d2b': { name: "Sony A7C",      supports: { shutter: true, aperture: true, iso: true, liveview: true,  destination: true,  focus: true,  _bufTime: 2500, newISO: true  } },
     '054c:0d9f': { name: "Sony A7R IV A", supports: { shutter: true, aperture: true, iso: true, liveview: true,  destination: true,  focus: true,  _bufTime: 2500, newISO: true  } },
     '054c:0da3': { name: "Sony FX3",      supports: { shutter: true, aperture: true, iso: true, liveview: true,  destination: true,  focus: true,  _bufTime: 2500, newISO: true  } },
+    '054c:0da7': { name: "Sony A7 IV",    supports: { shutter: true, aperture: true, iso: true, liveview: true,  destination: true,  focus: true,  _bufTime: 2500, newISO: true  } },
 }
 
 var properties = {