![]() |
|
|
#1 |
|
Member
Join Date: Apr 2004
Location: East
Posts: 1,252
|
Ok, following Max 2.8's suggestion, I'll post some hyperfocal charts here in JPEG so that the more adventurous can try out hyperfocusing. The charts should be accurate as I got the computer to calculate everything in an Excel spreadsheet, but if anyone spots errors, please drop me a PM and I'll fix it.
Here're some links of interest regarding hyperfocusing: A Little About Hyperfocusing The Basic Formula Online Calculator for Nikon Cameras (Film, DX and Coolpix) There are of course many more (and better) links than the ones I provided above, but these are the simplest ones to understand and begin with. How To Use The Charts There are two ways to use them: 1. Let's say you have a 12mm lens for a Nikon DX format DSLR camera and you wished to use hyperfocus to maximize your DOF. You would refer to the appropriate chart, looking at the line for the 12mm focus length and determine that if you set your aperture to f/4, and focus distance (by turning the focus ring manually) to 1.8m, you'd be able to effectively capture everything from 1.8m in front of your camera. OR 2. Let's say you have a 20mm lens and you would like to only have objects from around 3m onwards in focus, then you would look up the correct chart, along the row for the 20mm focal length and locate a distance that is close to 3m. In this case, it is either 3.6m or 2.5m, so you would set your lens to either f/5.6 or f/8 and focus at the appropriate hyperfocal distance marked on the chart. That's it. All that's left is for you to do is to ensure that the camera is stable and then press the shutter release. Cheers, Matt Last edited by deadpixel; 31st August 2005 at 10:02 AM. |
|
|
|
|
#2 |
|
Member
Join Date: Apr 2004
Location: East
Posts: 1,252
|
Here's the chart for Nikon DX format DSLR cameras
![]() Cheers, Matt |
|
|
|
|
#3 |
|
Senior Member
Join Date: Jul 2004
Location: Singapore
Posts: 8,497
|
Thankyou, DP
.Mod, can we have another stickie, pleasssssssssse........... ![]() |
|
|
| Sponsored Link |
|
|
#4 |
|
Member
Join Date: Aug 2005
Posts: 326
|
Heard my nick... Ha..haha.. Ok, I newbie only. But this hyperfocusing stuff is very interesting, esp handy for ppl doing landscapes...
Nice work there! Thx for sharing. ![]() Last edited by hyperFocal; 1st September 2005 at 12:29 AM. |
|
|
|
|
#5 |
|
Senior Member
Join Date: Jul 2004
Location: Singapore
Posts: 8,497
|
![]() I did up this chart for Canon User. Dead Pixel, can you help check if I got it right? For Canon's circle of confusion diameter, I used 0.019. Someoone mention this figure earlier, is it right? |
|
|
|
|
#6 |
|
Member
Join Date: Apr 2004
Location: East
Posts: 1,252
|
Max,
It's ok for the 10D, 20D, D30, D60, 300D and 350D. The 1D and 1DMarkII has a CoC of 0.023 and the 1DS 0.030 Cheers, Matt |
|
|
|
|
#7 |
|
Senior Member
Join Date: Sep 2004
Location: SG / LDN
Posts: 3,040
|
what are u guys going on about man
![]()
__________________
My Photos on Flickr |
|
|
|
|
#8 | |
|
Moderator
Join Date: Mar 2003
Location: Singapore
Posts: 4,805
|
![]() |
|
|
|
|
|
#9 | |
|
Senior Member
Join Date: Jul 2004
Location: Singapore
Posts: 8,497
|
Nevermind lah, most of us dun have such pro camera. Teerex and Vortex, I also dun know lah. Deadpixel say this is supposed to be a formula to get maximum DOF. Next outing, we try, ok? I am going Ubin on Monday, Teerex, dun say I never jio hor.... Wanna join? Last edited by TrailsofLife; 2nd September 2005 at 12:23 PM. |
|
|
|
|
|
#10 |
|
Member
Join Date: Feb 2005
Posts: 299
|
REgarding the mm, do I have to include the crop factor? I'm using a 20mm but on a 1.6 crop factor body. So I shld be looking at 32 mm instead of 20mm?
|
|
|
|
|
#11 | |
|
Senior Member
Join Date: Mar 2004
Location: Central West
Posts: 1,937
|
Matt, I assume you have used the Carl Zeiss formula for the CoC ? |
|
|
|
|
|
#12 | |
|
Senior Member
Join Date: Mar 2004
Location: Central West
Posts: 1,937
|
Also, sorry to just nitpick, but if you set your lens to the hyperfocal distance, you will actually get everything from half the hyperfocal distance to infinty, eg. in you example above, if hyperfocal distance is 1.8m for f/4 at 12mm, and you set your focus to 1.8m, you will get everything from 0.9m to infinity to be "in focus" (not just 1.8m and above) |
|
|
|
|
|
#13 |
|
Member
Join Date: Feb 2005
Posts: 299
|
was wondering is this chart useful for taking interior photos? Since the distance is not that great in a house.
|
|
|
|
|
#14 | |
|
Member
Join Date: Feb 2005
Posts: 299
|
|
|
|
|
|
|
#15 | ||
|
Member
Join Date: Apr 2004
Location: East
Posts: 1,252
|
CoC = Imager Diagonal / Zeiss-Factor However, if I had stuck to this formaula, the CoC of the Nikon DX sensors would be almost the same as that of the Canon's - 0.0163 for Nikon vs. 0.0156 for Canon. If we round it up to 3 decimals, they would be exactly the same - 0.016 vs. 0.016. I used a simpler calculation by dividing the CoC of a normal 35mm format camera by that of the sensor's crop factor. As the common CoC range for DoF calculations of a 35mm format ranges from 0.025 to 0.035, I took the middle value of 0.03.
DOF (when focused at Hyperfocal Distance [H]) = H/2 to Infinity But considering that many are already confused about just getting the hyperfocal distance, I thought that it would be best to just leave DoF calculations out. Even with these charts and explanations up, I'm not sure how many have actually tried them. Cheers, Matt |
||
|
|
|
|
#16 | |
|
Member
Join Date: Apr 2004
Location: East
Posts: 1,252
|
|
|
|
|
![]() |
| Bookmarks |
| Thread Tools | |
|