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#1
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Hyperfocal Distance
This website looks really good for working out the Hyperfocal Distance, so I made up a card with focal lengths and f-stops I commonly use for landscape work and had a try out, but something isn't right. Here's an example with the E1 and the 12-60.
Exif: 24mm, F9, so according to the chart the hyperfocal distance should be 4.5 metres. The rock in the lower left is about 5 metres away so I focussed on it. FullImage.jpg Here's a 100% crop of the rock: 2Metre_100percent.jpg Not pin sharp, but ok Here's the village in the distance: distant_100percent.jpg Looks pretty OOF to me, but my understanding is if I focus on the hyperfocal distance, everything from closer than that to infinity should be in focus. Does anyone have any tips/advice/clues?
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John m4/3: E-P2, EM-5, 100-300, 14-42mm 12-50mm, 45mm, panny 14mm. 4/3: 7-14 + Flashes & tripods & stuff "Take nothing but pictures and leave nothing but footprints". Flickr gallery |
#2
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Re: Hyperfocal Distance
Fair comment.. doesn't quite seem to do it - as you say, slightly out at infinity.
However this site http://www.cambridgeincolour.com/tut...calculator.htm has a more rigid dof calculator, and if you set it for a 20 inch print viewed from 50cm with 20/20 vision (and maybe that is more like the situation when pixel peeking on a big monitor) then it looks like like the hyperfocal distance would be further away.. Pete
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Look, I'm an old man. I shouldn't be expected to put up with this. Pete's photoblog Misleading the public since 2010. |
#3
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Re: Hyperfocal Distance
Thanks Pete, that's a better site, I clearly need to do some experimenting with what is acceptable sharpness, the figures I got are a long way out.
That 20/20 vision bit is interesting. A sensitive perfectionist may insist on you having an eye test before letting you see his photos. If you're 20/20 you aren't allowed to see them because you'll think they're OOF ![]()
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John m4/3: E-P2, EM-5, 100-300, 14-42mm 12-50mm, 45mm, panny 14mm. 4/3: 7-14 + Flashes & tripods & stuff "Take nothing but pictures and leave nothing but footprints". Flickr gallery |
#4
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Re: Hyperfocal Distance
Just been watching a David Noton DVD, very inspiring it is. He has a hyperfocal distance chart on his site, davidnoton.com but it is for full frame lenses.
Would it be the same for 4/3 lenses? If not, anyone know of where I can get a chart for 4/3 lenses? I have searched the forum and there is some stuff about DOF but I couldn't find a chart. Just a shame that there is not a scale on each lens as there used to be in the olden days.
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#5
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Re: Hyperfocal Distance
Quote:
http://fourthirds-user.com/2011/04/a...our_thirds.php ..shows that compared to full frame, you will get equivalent full frame DOF by halving the full frame focal length and halving the f-number. So you should be able to use that to ready reckon from a full frame chart. By the way, what you see as in focus and not in focus is all relative. If you crop severely, and you have enough resolution, what originally looked sharp will look blurred depending on how you view it. This is demonstrated in my latest article all about lens apertures: http://dpnow.com/7975.html These two illustrations from the article serve the point: Depth of field is all relative. Everything above looks to be sharp, but zoom in on the same image... ..and you can see that the background is actually fairly blurry, while the foreground is sharp. Hope that helps, Ian
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Founder and editor of: Olympus UK E-System User Group (http://e-group.uk.net) Four Thirds User (http://fourthirds-user.com) Digital Photography Now (http://dpnow.com) Olympus camera, lens, and accessory hire (http://e-group.uk.net/hire) Twitter: www.twitter.com/ian_burley Flickr: www.flickr.com/photos/dpnow/ Pinterest: www.pinterest.com/ianburley/ NEW: My personal BLOG ianburley.com |
#6
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Re: Hyperfocal Distance
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If the chart for FF says 24mm lens @ f8 gives a hyperfocal distance of 2.4m would a 4/3 lens at 12mm need f16 give the same hyperfocal distance?
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#7
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Re: Hyperfocal Distance
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Hi John the distant houses could very well be soften by heat haze, couldn't say really about the rock not being in focus though. At f9 with a 24mm lens should have given you most in focus I would say. Dave |
#8
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Re: Hyperfocal Distance
Quote:
Ian
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Founder and editor of: Olympus UK E-System User Group (http://e-group.uk.net) Four Thirds User (http://fourthirds-user.com) Digital Photography Now (http://dpnow.com) Olympus camera, lens, and accessory hire (http://e-group.uk.net/hire) Twitter: www.twitter.com/ian_burley Flickr: www.flickr.com/photos/dpnow/ Pinterest: www.pinterest.com/ianburley/ NEW: My personal BLOG ianburley.com |
#9
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Re: Hyperfocal Distance
I have been focusing one third of the way into the scene with all lenses.Will Hyperfocal Distance focus improve the sharpness in my landscapes ?
Thanks John |
#10
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Re: Hyperfocal Distance
I
Quote:
Ian
__________________
Founder and editor of: Olympus UK E-System User Group (http://e-group.uk.net) Four Thirds User (http://fourthirds-user.com) Digital Photography Now (http://dpnow.com) Olympus camera, lens, and accessory hire (http://e-group.uk.net/hire) Twitter: www.twitter.com/ian_burley Flickr: www.flickr.com/photos/dpnow/ Pinterest: www.pinterest.com/ianburley/ NEW: My personal BLOG ianburley.com |
#11
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Re: Hyperfocal Distance
I find most of my shots are between F11 and F16 on the 12-60 and mostly F11 on 7-14 and I have always pre focused one third into the scene
Thanks John |
#12
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Re: Hyperfocal Distance
Quote:
Ian
__________________
Founder and editor of: Olympus UK E-System User Group (http://e-group.uk.net) Four Thirds User (http://fourthirds-user.com) Digital Photography Now (http://dpnow.com) Olympus camera, lens, and accessory hire (http://e-group.uk.net/hire) Twitter: www.twitter.com/ian_burley Flickr: www.flickr.com/photos/dpnow/ Pinterest: www.pinterest.com/ianburley/ NEW: My personal BLOG ianburley.com |
#13
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Re: Hyperfocal Distance
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Creature of habit? Pete
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Look, I'm an old man. I shouldn't be expected to put up with this. Pete's photoblog Misleading the public since 2010. |
#14
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Re: Hyperfocal Distance
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If you want a copy send an e-mail and I'll send you it. ![]()
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Graham We often repeat the mistakes we most enjoy... |
#15
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Re: Hyperfocal Distance
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Checking Lightroom the vast majority of mine are f5.6 to f8.
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It's the image that's important, not the tools used to make it. David M's Photoblog |
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Useful link for Hyperfocal Distance calculations | theMusicMan | The lounge | 0 | 16th May 2008 06:22 AM |
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