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7 votes
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How many steps to walk forward to get equal range to 200mm with 70mm lens?

How much you have to "zoom with your feet" (walk) depends on the distance to your subject. The FoV (field of view) varies with the inverse of the focal lenght (for a given camera), so going from 70 to ...
remco's user avatar
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5 votes
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Find hyperfocal distance for HD (1920x1080) resolution?

It would only make a difference if the display size would be so large as to make the difference between HD resolution (approx. 2MP) and the camera's native resolution perceptible to the viewer. ...
Michael C's user avatar
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5 votes

Is the hyperfocal distance calculation outdated?

Hyperfocal distance is a specific application of the concept of depth of field. There's only one distance that is in sharpest focus. Everything in front of or behind that distance is blurry. The ...
Michael C's user avatar
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5 votes

Can hyperfocal distance be used to keep everyone in focus in group photography?

tl;dr - in theory, sure. In practice, I've found that it isn't really needed. In theory, yes, one could use the hyperfocal distance (HFD from here on out) to ensure that all subjects are reasonably ...
OnBreak.'s user avatar
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4 votes
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Is the hyperfocal distance calculation outdated?

In short: There are two possible approaches to the sharpness in digital photography: getting the best possible sharpness given the sensor adequate sharpness when the image is viewed The first ...
hpchavaz's user avatar
  • 367
4 votes
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How do I set hyperfocal distance meter on a Pentax 50mm lens, if I want bokeh?

The hyperfocal method is a way of insuring that everything in the background appears to be in focus in the final image as it is displayed. If you want your photo to demonstrate background bokeh then ...
Michael C's user avatar
  • 175k
3 votes

How many steps to walk forward to get equal range to 200mm with 70mm lens?

The focal length of a lens reveals its power. The longer the focal length, the larger the images of objects will be. Your camera is compact digital; I know this because it came with a zoom lens with a ...
Alan Marcus's user avatar
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3 votes
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How do I take a sharp picture of a large crowd of faces?

Well. In reality you do not have too many options. Let me summarize what will happen. Forget the focal length. Just use it for the composition. Normally a smaller focal length keeps more into focus. ...
Rafael's user avatar
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3 votes

How do I take a sharp picture of a large crowd of faces?

Are you limited to just one shot? If not, take several at different apertures , and check the rear of the screen making sure that everyone in the extremeties is in focus. Something like f/8 would be a ...
Crazy Dino's user avatar
  • 4,854
3 votes
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Can I set a button to a particular focus distance on 5DIII (and ML)?

With the Canon system pre-set focus distances are registered in the lens, rather than the body. The only lenses of which I am aware that offer this feature are the Super Telephoto series. But even ...
Michael C's user avatar
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3 votes

Hyperfocal point if nothing is close to you?

You could focus at infinity and still get everything from a few dozen feet to the horizon within DOF; in this situation, that's what I'd suggest. Your horizon and everything a mile or more away will ...
Zeiss Ikon's user avatar
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2 votes

Why are my pictures blurry even though a DOF calculator shows everything should be in focus?

Why are my pictures blurry even though a DOF calculator shows everything should be in focus? Short answer (TL;DR): Because you're viewing them at much larger magnification than the viewing conditions ...
Michael C's user avatar
  • 175k
2 votes

Why are my pictures blurry even though a DOF calculator shows everything should be in focus?

Understand that there is no real Depth Of Focus - only a perceived and acceptable range for it. Physics defines that there is only a single plane at a specific distance that is in focus. In theory, ...
Aganju's user avatar
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2 votes

How many steps to walk forward to get equal range to 200mm with 70mm lens?

One friend told me that you just have to walk two or three steps forward to get 200mm equal range with your 24-70 lens The other night I took a photo of... the Moon with my 200mm lens. I am pretty ...
Rafael's user avatar
  • 25.1k
2 votes

How do I take an image without a blurry background?

Like with any other camera you stop it down to a small aperture like f/22, say, of course it depends on the background distance as well. If you go that high, though, you will get light diffraction ...
William Weller's user avatar
2 votes

Ultra-wide manual lens & concert photography

Scale focus. Why I use a manual wide really, scale focus works when conditions are too fast/rough for autofocus to be practical. Check the accuracy of your scale beforehand! Both my Rokinon 14 and my ...
Roger Krueger's user avatar
2 votes

Convex lens, object distance, distance, focal length, in what state is the hyperfocal state?

"Hyperfocal" refers to the condition where depth of field allows the lens to be "in focus" from some minimum distance to infinity. This depends on a core assumption: the size of the acceptable "...
Zeiss Ikon's user avatar
  • 7,140
2 votes

For the formula 1 / u + 1 / v = 1 / f, what is infinite depth of field or hyperfocal distance?

Hyperfocal distance itself doesn't really have anything to do with the lens formula you quote. The formula for hyperfocal distance is (approximate, but good enough in practice): ...
Roel Schroeven's user avatar
2 votes

Hyperfocal point if nothing is close to you?

Hyperfocal is about maximizing the range of things that are in focus. If everything is far away, it doesn't really apply, so just focus on these far away things.
xenoid's user avatar
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1 vote

Convex lens, object distance, distance, focal length, in what state is the hyperfocal state?

Your question seems to be based upon an assumption that a human viewer can see the difference between "blurry" and "in focus" at the system limits of a lens system. This is usually far from the case ...
Michael C's user avatar
  • 175k
1 vote
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Ultra-wide manual lens & concert photography

I very occasionally use a 17-40mm (autofocus) lens with a FF camera at concerts, but the wide end is usually for turning around and getting shots of the crowd just on the other side of the barrier ...
Michael C's user avatar
  • 175k
1 vote

Is the hyperfocal distance calculation outdated?

Circle of Confusion (CoC) is NOT a constant. It is computed uniquely for every film or sensor size. CoC = 0.03 mm only applies to 35 mm film size. CoC is judged to be the smallest hypothetical "...
WayneF's user avatar
  • 12.9k
1 vote

Can hyperfocal distance be used to keep everyone in focus in group photography?

Acceptable sharpness/depth of field (DOF)/apparent sharpness are all perceptual qualities dependent on how an image is viewed (size/distance). But actual sharpness/maximum sharpness only exists at the ...
Steven Kersting's user avatar
1 vote

Can hyperfocal distance be used to keep everyone in focus in group photography?

If you have different sets of people standing at different linear distances from the camera can we use the theory of hyperfocal distance to ensure sharp focus on all subjects? No. Conversely does ...
scottbb's user avatar
  • 33.1k
1 vote

Can hyperfocal distance be used to keep everyone in focus in group photography?

In theory, only the distance focused upon yield a tack sharp image, all other distances reproduce with reduced sharpness. In practice, this is an invalid statement as their exists a span both ahead ...
Alan Marcus's user avatar
  • 39.4k
1 vote

Why I am getting different values for depth of field from calculators vs in-camera DoF preview?

Film Format Basis vs. Pixel Basis The depth of field (DoF) is the region in which, due to optical physics, a point has, on the film or the sensor, an image smaller than the size of the circle of ...
1 vote
Accepted

Hyper focal distance versus maximum focus distance before infinity

Focusing distance scales and depth of field scales are holdovers from a time before many cameras had a way of viewing the scene through the lens used to take the image. They've never been extremely ...
Michael C's user avatar
  • 175k
1 vote

What is the depth of field if the the focus distance is set to infinity?

With the camera focus set to infinity (as far as the eye can see) the hyperlocal distance is the near subject distance that will render an object with acceptable focus. The far distance is infinity. ...
Alan Marcus's user avatar
  • 39.4k
1 vote

Find hyperfocal distance for HD (1920x1080) resolution?

The resolution of the capture only makes a difference if the pixel pitch is greater than the recommended CoC for your sensor size. Your Canon has a sensor of 22.3 x 14.9 mm. Dividing this into a 1920 ...
Mark Ransom's user avatar
  • 1,495
1 vote

How do I take a sharp picture of a large crowd of faces?

Since you're planning to rent a lens anyway, you might get a Tilt/Shift lens. That will let you lay the focal plane across the faces of the crowd, getting everyone in focus virtually independent of ...
ths's user avatar
  • 7,181

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