Photo-a-day

[Syd]

Also, when using f32, you can get wonderfully sharp pictures, the Depth Of Field is massive, so the focus appears better.

This is very good for taking landscapes, but espesually good for city scapes!

That goes against what we have just been discussing, when using f16+ I have been getting 'softer' results................

[kalniel]

Also, when using f32, you can get wonderfully sharp pictures, the Depth Of Field is massive, so the focus appears better.

This is very good for taking landscapes, but espesually good for city scapes!

I presume you're talking about medium format cameras, not APS-C sensors?

With the APS-C syd has and 16mm (focal length of the first photo) he can get depth of field from 1.9ft to infinity, which is massive enough, at just f/11! Going beyond f/16 causes softness due to diffraction when the photosites are as close together as they are on APS-C.

[this_is_gav]

That goes against what we have just been discussing, when using f16+ I have been getting 'softer' results................

Keep in mind that lenses have an area where they are at their optimum - normally around f7-f12, so while focus across the image may have improved, the optics of the lens might not allow it to be shown in the final capture.

[TheAnimus]

That goes against what we have just been discussing, when using f16+ I have been getting 'softer' results................

I've not found this at all, even with my ultra cheap sigma telemacro lense.

I presume you're talking about medium format cameras, not APS-C sensors?

With the APS-C syd has and 16mm (focal length of the first photo) he can get depth of field from 1.9ft to infinity, which is massive enough, at just f/11! Going beyond f/16 causes softness due to diffraction when the photosites are as close together as they are on APS-C.

I was thinking 35mm in all honesty, but with my APS-C i've been doing the same with good results. How do you calculate the dof to get 1.9ft to infinity?

[kalniel]

I've not found this at all, even with my ultra cheap sigma telemacro lense.

I was thinking 35mm in all honesty, but with my APS-C i've been doing the same with good results. How do you calculate the dof to get 1.9ft to infinity?

I use the DOFMaster charts:

http://www.dofmaster.com/dofjs.html

Hyperfocal is 3.76ft at those settings, giving the 1.9ft to infinity DoF.

For diffraction effects, I use the table (3) at Luminous landscape:
http://www.luminous-landscape.com/tu...solution.shtml

but that only goes up to f/22, at which point an APS-C only has a maximum theoretical resolving power of 2 megapixels at green-yellow light wavelengths. So it's going to be soft at f/22, by f/32 it would be pretty terrible.

f/11 on APS-C gives you up to 7MP of resolving power, which is plenty for most uses.

I use my Olympus at f5.6 with a 9mm lens to give DoF from 1.6ft to infinity, and a resolving power of up to 17MP (which is greater than my sensor).

[Bobster]

this mornings shoot

[cowboy1969]

[Barney]

jesus, nice pic. what cam and lens is that with ?

[cowboy1969]

jesus, nice pic. what cam and lens is that with ?

Nikon D80 and a Nikon 70-300vr lens Barney taken at Chester Zoo

[kalniel]

[Syd]

Nice witches cat K

[Bobster]

[Syd]

Very orignal idea - a little different to your 'standard' weddding shot
BTW are you an insomniac??

[merdat]

[Bobster]

Very orignal idea - a little different to your 'standard' weddding shot
BTW are you an insomniac??

thanks

i wish i were!

[Bobster]