jdlaing Posted December 1, 2017 Share #1 Posted December 1, 2017 Advertisement (gone after registration) If I use a lens set to f/1.0 in broad daylight will the addition of a neutral density filter increase the depth of field? Quote Link to post Share on other sites More sharing options...
Advertisement Posted December 1, 2017 Posted December 1, 2017 Hi jdlaing, Take a look here DOF Question. I'm sure you'll find what you were looking for!
pgk Posted December 1, 2017 Share #2 Posted December 1, 2017 No. 2 Quote Link to post Share on other sites More sharing options...
frame-it Posted December 1, 2017 Share #3 Posted December 1, 2017 how many stops does the ND filter compensate and whats the shutter speed ? Quote Link to post Share on other sites More sharing options...
fenixv8 Posted December 1, 2017 Share #4 Posted December 1, 2017 Wont affect DoF. will only change exposure value and maybe image quality. 3 Quote Link to post Share on other sites More sharing options...
jdlaing Posted December 1, 2017 Author Share #5 Posted December 1, 2017 how many stops does the ND filter compensate and whats the shutter speed ? 5 stops and shutter speed unknown. Quote Link to post Share on other sites More sharing options...
evikne Posted December 1, 2017 Share #6 Posted December 1, 2017 (edited) how many stops does the ND filter compensate and whats the shutter speed ? ND2 compensates for 1 f-stop and doubles the shutter speed. So if the correct shutter speed should have been 1/8000 sec., you will need 1/4000 sec. instead with an ND2 filter. ND4 will give 1/2000 sec., and ND8 will give 1/1000 sec. And so on … Edit: Sorry, I misunderstood the question … Edited December 1, 2017 by evikne Quote Link to post Share on other sites More sharing options...
anickpick Posted December 1, 2017 Share #7 Posted December 1, 2017 Advertisement (gone after registration) My favorite nd filters are the B+W XS-Pro filters, as they are (almost) completely color neutral. Most nd filters, incl. B+W F-Pro filters, are not color neutral. Quote Link to post Share on other sites More sharing options...
dkmoore Posted December 1, 2017 Share #8 Posted December 1, 2017 So no matter the shutter speed depth of field is unchanged? I am not sure that is correct. That would mean that aperture is solely responsible for depth of field but I am guessing their are other factors, diameter of glass, shutter speed, etc. I truly don't know the correct answer but I would like a fact based response to resolve my curiosity. Quote Link to post Share on other sites More sharing options...
Keith (M) Posted December 1, 2017 Share #9 Posted December 1, 2017 (edited) This will help! Just select your camera and focal length to see the results at various distances etc. Edited December 1, 2017 by Keith (M) Quote Link to post Share on other sites More sharing options...
pico Posted December 1, 2017 Share #10 Posted December 1, 2017 (edited) how many stops does the ND filter compensate and whats the shutter speed ? B&W makes individual ND filters from one to twenty stops. That's one longer shutter speed for each filter. Edited December 1, 2017 by pico Quote Link to post Share on other sites More sharing options...
anickpick Posted December 1, 2017 Share #11 Posted December 1, 2017 (edited) „So no matter the shutter speed depth of field is unchanged?“ Correct. Focal lenght, aperture and distance define dof. Edited December 1, 2017 by anickpick Quote Link to post Share on other sites More sharing options...
jdlaing Posted December 1, 2017 Author Share #12 Posted December 1, 2017 This will help! Just select your camera and focal length to see the results at various distances etc. I don’t see the part of that chart that gives any ND filter information. 1 Quote Link to post Share on other sites More sharing options...
jaapv Posted December 1, 2017 Share #13 Posted December 1, 2017 If I use a lens set to f/1.0 in broad daylight will the addition of a neutral density filter increase the depth of field? No. DOF is determined by: 1. Subject distance 2. Aperture 3. Focal length in relationship to subject distance 4. Subject structure 5. Subject contrast 6. Sensor or film 7. Magnification through the system (this covers sensor/film size) 8.The falloff of sharpness in the OOF areas in the lens design 9. Print size (see magnification) 10. The tolerance of the viewer for unsharpness. But not by an ND filter, as long as you don't adjust the aperture but the shutter speed. Shutterspeed has absolutely nil effect on DOF. Using a contrast-enhancing filter like a polfilter or a yellow/red one in B&W can have an impact. Don't forget that DOF is not an objective effect. It is the zone of unsharpness that is acceptable to the viewer and depends on the fact that the resolving power of the human eye is limited. Thus it is subjective and not precisely quantifyable. All seemingly objective and precise formulas can only approximate reality - that is why there are a considerable number of different ones. 3 Quote Link to post Share on other sites More sharing options...
pop Posted December 1, 2017 Share #14 Posted December 1, 2017 I don’t see the part of that chart that gives any ND filter information. That's because no filter affects the DOF. 1 Quote Link to post Share on other sites More sharing options...
ECohen Posted December 1, 2017 Share #15 Posted December 1, 2017 jaapv Question ....How do these determine DOF? DOF is determined by: (Post 13) 4. Subject structure 5. Subject contrast Quote Link to post Share on other sites More sharing options...
Exodies Posted December 1, 2017 Share #16 Posted December 1, 2017 Doesn’t an ND filter affect the contrast? Quote Link to post Share on other sites More sharing options...
pico Posted December 1, 2017 Share #17 Posted December 1, 2017 Doesn’t an ND filter affect the contrast? With film, indeed longer exposures can influence contrast. Digital? I don't know. Quote Link to post Share on other sites More sharing options...
ECohen Posted December 2, 2017 Share #18 Posted December 2, 2017 (edited) Just to be sure I'm on the same page We're talking about shooting wide open and using an ND filter for 2 or 3 stops to achieve shallow DOF ?The lack of contrast in film from long exposures is something else. I would agree with jaapv's list. I just don"t understand #4. Subject structure or # 5. Subject contrast. I have always thought DOF was purely an issue of the "Math" and am hoping jaapv will explain how they effect DOF. I appreciate this group and am always learning. Post 13... jaapv's list DOF is determined by: 1. Subject distance 2. Aperture 3. Focal length in relationship to subject distance 4. Subject structure 5. Subject contrast 6. Sensor or film 7. Magnification through the system (this covers sensor/film size) 8.The falloff of sharpness in the OOF areas in the lens design 9. Print size (see magnification) 10. The tolerance of the viewer for unsharpness. Edited December 2, 2017 by ECohen Quote Link to post Share on other sites More sharing options...
garysamson Posted December 2, 2017 Share #19 Posted December 2, 2017 It would be very easy to mount the camera on a tripod and photograph the same subject at the same aperture with and without a ND filter (adjusting the shutter speed for loss of light when using the ND filter) and examining the two images for DOF. Quote Link to post Share on other sites More sharing options...
jaapv Posted December 2, 2017 Share #20 Posted December 2, 2017 DOF on three large cubes (modern art, for arguments' sake) will exhibit a very different DOF from a leafy forest. So will a grey misty scene do from a sunny beach scene. (to take the it into the hypothetical extreme: an uniformly grey image will have no structure, no contrast, but an infinite DOF) It is, in the end, all about the impression of sharpness in the eye of the beholder. 2 Quote Link to post Share on other sites More sharing options...
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