In the camera app you can change between back and front camera, by default it uses the back camera until you have a 3D touch capable iPhone and you use 3D Touch on the camera app where one option is "Take a Selfi", then it will automatically be set to the front camera. I don't think in KNFB Reader you have a choice, it uses the back camera. Always remember that sighted people want to see what they are taking a picture of on the screen, therefore the back camera is normally used when taking a picture of anything that is in front of you, you look at the screen and the camera points towards whatever you are taking a picture of. If you are taking a selfi you still look at the screen, but then of course the camera has to be facing you and if you were to turn the phone around so the back camera would be facing you then a sighted person couldn't see what the camera shows on the screen. The front camera which is used for selfis or during Facetime or other video calls doesn't have to have the same good resolution because at best you are taking a selfi which is really close up and not something further away which a sighted person may want to enlarge digitally which is when the number of pixels matters. If you enlarge an image with fewer pixels it gets grainier more quickly.
Regards, Sieghgard From: [email protected] [mailto:[email protected]] On Behalf Of Richard Turner Sent: Saturday, November 12, 2016 11:32 AM To: [email protected] Subject: RE: Focus automatic in camera Hi, If you are wanting a good quality picture, you want the back camera, which is the one on the back side of the phone, not on the screen side. If you want to take a selfy, that is the front camera and it is lower quality than the back camera, so not good for quality photos or OCR. Richard From: [email protected]<mailto:[email protected]> [mailto:[email protected]] On Behalf Of Andrew J. LaPointe Sent: Saturday, November 12, 2016 11:23 AM To: [email protected]<mailto:[email protected]> Subject: Re: Focus automatic in camera Hi, I always get confused....The side of the camera, is it front or back?? From: Sieghard Weitzel<mailto:[email protected]> Sent: Saturday, November 12, 2016 1:08 PM To: [email protected]<mailto:[email protected]> Subject: RE: Focus automatic in camera Hi Sandra, There is absolutely no reason why a picture or KNFB result should be any different whether screen brightness is 0% or 100% or if the screen curtain is on especially with the rear camera. The camera takes the picture and the screen displays it so at best a sighted person would not see the picture very good if screen brightness was very low and it was bright outside and of course they wouldn't see anything if screen curtain was on. Just to make sure I am not spouting nonsense I just did 2 tests: 1. I took a picture of a printed page with KNFB Reader, first with screen brightness at around 46%, then manually set to 0% and then with screen curtain on and still at 0% brightness. All 3 scans were read equally well and I could not detect any difference. 2. I asked one of my employees to take a picture, again first at a normal brightness level, then with brightness at 0% and then with screen curtain on. Afterwards I put brightness back to auto brightness, opened the Photos app and asked her to look at the 3 pictures, she said they all were the same. The above is true for both the back and front camera. One thing I wasn't sure about is whether the front camera which uses the LED backlighting for the flash would actually flash if the screen curtain was on. We went into a dark room and tried a picture with Flash set to automatic with the front camera once without and once with screen curtain on. My employee said the flash went off both times and the pictures looked the same. Best regards, Sieghard From: 'Sandratomkins' via VIPhone [mailto:[email protected]] Sent: Saturday, November 12, 2016 9:02 AM To: [email protected]<mailto:[email protected]> Subject: Re: Focus automatic in camera hi, I may be wrong, but certainly screen brightness will affect your photograph. for examples, to get a good shot with KNFB reader, I have to remember to turn brightness right up, Normandy, it is zero. this isn't true of all camera apps, but very difficult to predict which ones it affects and which ones it doesn't. same with the screen curtain, some barcode apps don't work when the screen curtain is turned on. just my observations, Sandy sent from the dark side of the moon On 12 Nov 2016, at 16:22, Sieghard Weitzel <[email protected]<mailto:[email protected]>> wrote: Hi Afik, The screen curtain has no effect on taking pictures with the camera app which uses the back camera or, if you take selfis, the front camera. The only time screen curtain needs to be off is when you take a screenshot or, of course, if a sighted person is taking the picture or if you want a sighted person to help you line up a good shot. Regards, Sieghard From: [email protected]<mailto:[email protected]> [mailto:[email protected]] On Behalf Of Afik Sofir Sent: Saturday, November 12, 2016 7:55 AM To: [email protected]<mailto:[email protected]> Subject: RE: Focus automatic in camera Hi sieghard, The screen curtain have to be on or off when using the camera? Thanks for this email. From: [email protected]<mailto:[email protected]> [mailto:[email protected]] On Behalf Of Sieghard Weitzel Sent: Saturday, November 12, 2016 5:30 PM To: [email protected]<mailto:[email protected]> Subject: RE: Focus automatic in camera Hi Todd, The iPhone’s camera, just as many point and shoot cameras, is an auto focus camera. This means it automatically focuses on what is in the centre of the picture. This is why Voiceover say “Focus unlocked” it simply means focus is not locked to anything outside the auto focus area which is in the centre of the screen. As a blind person all you can do is to try and focus the camera so whatever it is you are taking a picture of is hopefully about in the middle of the screen where the auto focus area will do its job. If you take a picture of a person Voiceover will tell you when it sees the face and if the face is centred and if it says “face near left edge” you can try to move the phone a tiny bit to try and get it to be in the centre where the auto focus area is located. You can force the camera to focus on something that is not in the auto focus area in the middle of the screen by tapping on it, but obviously this is a photography feature which is of limited or no use to a completely blind person. Note that if a sighted person taps on something off to the side, maybe a flower or person that is not in the centre of the frame then the camera will still use auto focus and focus will still be “unlocked”. A sighted person can also “lock” the focus on an object or person on the screen by tapping and holding on the object or person instead of tapping it just once. If somebody did that and then you turned on Voiceover it would say “Focus locked” instead of “focus unlocked”. I have not yet discovered a way to “lock” focus when Voiceover is running, a double tap and hold doesn’t seem to do it, I tried a double tap and hold and then to tap with another finger and I tried force touch. On the other hand, if I toggle Voiceover off with a triple click of the home button and then touch and hold somewhere on the screen and the turn Voiceover back on, Voiceover will then say “Focus Locked”. There are also third-party apps which allow for “manual focus” instead of “auto focus”, but once again these would be of no use to a blind person and the same applies to adjusting the exposure which you can do even with Voiceover running if you double tap and hold and then slide a finger up or down on the screen. Of course you don’t really know what exposure will be best and here it is simply best to let the camera of the iPhone which is a very good camera do it’s job and let it auto focus and auto expose the picture. For anybody who is interested to learn a bit more about how photography in particular on the iPhone works even if many of the features require you to see what you are doing, the below article explains this quite nicely: http://iphonephotographyschool.com/focus-tips/ Best regards, Sieghard From: [email protected]<mailto:[email protected]> [mailto:[email protected]] On Behalf Of Todd Patkus Sent: Saturday, November 12, 2016 6:49 AM To: [email protected]<mailto:[email protected]> Subject: Focus automatic in camera For those who have experienced taking photos using the iPhone’s camera, how do I make the camera before taking a photo made to automatically focus on an object when facing the camera in front of it? What does it mean when it says Focus unlocked image? That is concerning iPhone 6S iOS 10.1.1. Please let me know. Thank you. Todd -- The following information is important for all members of the V iPhone list. 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