My1stLeicaCam Posted November 25, 2023 Share #1 Posted November 25, 2023 (edited) Advertisement (gone after registration) Here’s the scenario. i’m trying to take a pic of someone(date) seated on the same table opposite of me. There are 2 subjects, my date and the food on the table. I would like to have both subjects to be in focus. I’ve tried f16 and all types of focusing available on the Q3 but unable to have both subjects in focus. The following methods were tried to have both subjects to be in focus. (1) asking my date to move very close to the food. (2) leaving my seat and move further away. Both the methods are kinda “odd”. Thus I would like to seek advice from fellow members on how can I take a pic of both subjects to be in focus when I’m still seated on the same table and my date does not need to peer closely to the food. Thanks Edited November 25, 2023 by My1stLeicaCam Link to post Share on other sites More sharing options...
Advertisement Posted November 25, 2023 Posted November 25, 2023 Hi My1stLeicaCam, Take a look here Q3 Dining photography help/advice needed . I'm sure you'll find what you were looking for!
dem331 Posted November 25, 2023 Share #2 Posted November 25, 2023 Where is your focus point? If you focus on the closest point you want in focus and are say 1.5 metres away with a 28mm lens at f16 the depth of field behind the focus point is very large. Are you sure you are not getting motion blurr? If the light is not very strong at f16 you must be using very high ISO or low shutter speed. First make sure that there is something in focus in your image. Link to post Share on other sites More sharing options...
jaapv Posted November 25, 2023 Share #3 Posted November 25, 2023 Use focus stacking https://shotkit.com/focus-stacking-lightroom/ 1 Link to post Share on other sites More sharing options...
My1stLeicaCam Posted November 25, 2023 Author Share #4 Posted November 25, 2023 39 minutes ago, dem331 said: Where is your focus point? If you focus on the closest point you want in focus and are say 1.5 metres away with a 28mm lens at f16 the depth of field behind the focus point is very large. Are you sure you are not getting motion blurr? If the light is not very strong at f16 you must be using very high ISO or low shutter speed. First make sure that there is something in focus in your image. I’ve tried focusing on the food in front of the person and also on the person. The environment is brightly light afternoon tea. I’m seated probably around 1.2meters opp of my date. I can only get a sharp pic on either the person or the food. Example is f5.6. Iso 1250. When I crop into the pic, will start to see there’s so blurry on my date. The food in front is still in focus. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/385138-q3-dining-photography-helpadvice-needed/?do=findComment&comment=4920421'>More sharing options...
My1stLeicaCam Posted November 25, 2023 Author Share #5 Posted November 25, 2023 39 minutes ago, jaapv said: Use focus stacking https://shotkit.com/focus-stacking-lightroom/ I don’t have Lr. Only affinity photo. So what is the limitation to take a pic with 2 subject over dining table? I suppose the iPhone has built in sw to do this stacking process since the focal length is 24mm Link to post Share on other sites More sharing options...
jaapv Posted November 25, 2023 Share #6 Posted November 25, 2023 Yes, that is the way DOF works. The closer you get, the more shallow. The more you magnify, the more shallow. DOF is the area of acceptable unsharpness. The only thing that is really sharp in your image is the plane of focus. So what you are trying to achieve is technically impossible. 1 Link to post Share on other sites More sharing options...
jaapv Posted November 25, 2023 Share #7 Posted November 25, 2023 Advertisement (gone after registration) 1 minute ago, My1stLeicaCam said: So what is the limitation to take a pic with 2 subject over dining table? The only limitation is your tolerance of unsharpness. Or sharpen the image up by using Topaz Sharpen AI. But it will be artificial sharpness. 1 Link to post Share on other sites More sharing options...
jaapv Posted November 25, 2023 Share #8 Posted November 25, 2023 11 minutes ago, My1stLeicaCam said: I don’t have Lr. Only affinity photo. https://digital-photography-school.com/how-to-focus-stack-in-affinity-photo/ 1 Link to post Share on other sites More sharing options...
My1stLeicaCam Posted November 25, 2023 Author Share #9 Posted November 25, 2023 (edited) 15 minutes ago, jaapv said: Yes, that is the way DOF works. The closer you get, the more shallow. The more you magnify, the more shallow. DOF is the area of acceptable unsharpness. The only thing that is really sharp in your image is the plane of focus. So what you are trying to achieve is technically impossible. So our phones actually does the stacking post processing? I tried recreate the scene at home(pic taken by iPhone). I’m only able to take a sharp focus of both subjects using the Q3 if I move back around 2-3metres. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Edited November 25, 2023 by My1stLeicaCam Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/385138-q3-dining-photography-helpadvice-needed/?do=findComment&comment=4920438'>More sharing options...
My1stLeicaCam Posted November 25, 2023 Author Share #10 Posted November 25, 2023 9 minutes ago, jaapv said: https://digital-photography-school.com/how-to-focus-stack-in-affinity-photo/ Thanks so much! I followed your link and tried affinity photo focus merge. Works perfectly!!! Finally I’ve have appetite to eat my dinner! Link to post Share on other sites More sharing options...
dem331 Posted November 25, 2023 Share #11 Posted November 25, 2023 31 minutes ago, My1stLeicaCam said: I’ve tried focusing on the food in front of the person and also on the person. The environment is brightly light afternoon tea. I’m seated probably around 1.2meters opp of my date. I can only get a sharp pic on either the person or the food. Example is f5.6. Iso 1250. When I crop into the pic, will start to see there’s so blurry on my date. The food in front is still in focus. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! What Japp says is correct of course. But independently of whether you decide to go for stacking, I would take the time to understand what’s happening with the depth of field. A calculator like this one is very helpful: https://www.dofmaster.com/dofjs.html Now f5.6 at 1.1m is very different to f16 at 1.5m. The first gives you DOF behind focus point of 24cm, the second 3.35m (with Japp’s caveats about acceptable sharpness). This is what is happening to you. Now you can either focus stack or step back 40cm and stop down a bit ( you don’t need f16) 1 Link to post Share on other sites More sharing options...
My1stLeicaCam Posted November 25, 2023 Author Share #12 Posted November 25, 2023 (edited) 31 minutes ago, dem331 said: What Japp says is correct of course. But independently of whether you decide to go for stacking, I would take the time to understand what’s happening with the depth of field. A calculator like this one is very helpful: https://www.dofmaster.com/dofjs.html Now f5.6 at 1.1m is very different to f16 at 1.5m. The first gives you DOF behind focus point of 24cm, the second 3.35m (with Japp’s caveats about acceptable sharpness). This is what is happening to you. Now you can either focus stack or step back 40cm and stop down a bit ( you don’t need f16) Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Thanks. I understand better with the graphical explanation. So is there any DOF ios app for Leica Q3? Canon 1D with 28mm is the best candidate? Thanks! Edited November 25, 2023 by My1stLeicaCam Link to post Share on other sites More sharing options...
dem331 Posted November 25, 2023 Share #13 Posted November 25, 2023 29 minutes ago, My1stLeicaCam said: Thanks. I understand better with the graphical explanation. So is there any DOF ios app for Leica Q3? Canon 1D with 28mm is the best candidate? Thanks! I chose that one because it is full frame like the Q3. I do not think this tool takes into account the sensor MPs, I am not even sure I can answer the question “How does MP count affect DOF perception?” My off-the-cuff answer is “Not much”, but I may be totally off the mark. I will leave that to more technically minded people. 1 Link to post Share on other sites More sharing options...
jaapv Posted November 25, 2023 Share #14 Posted November 25, 2023 DOF becomes sharper defined and thus appears to be less. Dof does not jump into focus at the limit but is a gradient. Link to post Share on other sites More sharing options...
dem331 Posted November 25, 2023 Share #15 Posted November 25, 2023 1 minute ago, jaapv said: DOF becomes sharper defined and thus appears to be less shallow. Do you mean there is more apparent DOF? (“Less shallow”) Link to post Share on other sites More sharing options...
jaapv Posted November 25, 2023 Share #16 Posted November 25, 2023 No shallow was a typo. It appears less. Link to post Share on other sites More sharing options...
dem331 Posted November 25, 2023 Share #17 Posted November 25, 2023 5 minutes ago, jaapv said: No shallow was a typo. It appears less. Yes, that’s what I would’ve thought. However, I have no clue how to calculate that, and I haven’t come across an online DOF calculator that does it. Link to post Share on other sites More sharing options...
dem331 Posted November 25, 2023 Share #18 Posted November 25, 2023 I mean, I can theoretically see how one would do it – redefine the circle of confusion etc., but I am not up for doing the math. Link to post Share on other sites More sharing options...
jaapv Posted November 25, 2023 Share #19 Posted November 25, 2023 Calculating DOF is imprecise to put it mildly. It depends on subject structure, subject distance, subject contrast, magnification, resolution , viewing distance and the subjective evaluation of the viewer. Making DOF calculators a rough guesstimate at best. Math depends on too many assumptions to be meaningful. Link to post Share on other sites More sharing options...
dpitt Posted November 25, 2023 Share #20 Posted November 25, 2023 3 hours ago, My1stLeicaCam said: I don’t have Lr. Only affinity photo. So what is the limitation to take a pic with 2 subject over dining table? I suppose the iPhone has built in sw to do this stacking process since the focal length is 24mm Actually the iPhones do not use focus stacking. The standard lens of an iPhone is roughly 28mm equivalent, but the sensor is very small compared to FF as in the Q. Typically normal models have crop 5x now and the latest iPhone is only 3.5. When using an iPhone, you are actually shooting with a 6mm lens. Everything will be sharp easily. Getting a shallow DOF is almost impossible. That is why they use software on Pro models to simulate shallow DOF in portrait mode. 3 1 Link to post Share on other sites More sharing options...
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