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Tokina Super Wide Angle 12-24mm f/4 - DOF Question
Hey there,
I was hoping to get testimonials about the Tokina lens' Depth Of Field abilities. I recently bought the Canon Super Wide 10-22 f/3.5 - 4.5 and I'm displeased with it's DOF abilities. I've tried shooting both with AF and MF, with varying small apertures, ISO's, ... and I'm just not getting what I need from this lens. It's a shame as the lens if performing quite well otherwise (barrel distortions, CAs, MTF Res, ...). I had posted a comparative (Sigma vs Canon) Wide Angle lens question a couple of weeks ago - to which I received a bunch of great replies - so I guess this is somewhat related. Thanks a lot, dave |
#2
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Tokina Super Wide Angle 12-24mm f/4 - DOF Question
Dave wrote:
Hey there, I was hoping to get testimonials about the Tokina lens' Depth Of Field abilities. I recently bought the Canon Super Wide 10-22 f/3.5 - 4.5 and I'm displeased with it's DOF abilities. I've tried shooting both with AF and MF, with varying small apertures, ISO's, ... and I'm just not getting what I need from this lens. It's a shame as the lens if performing quite well otherwise (barrel distortions, CAs, MTF Res, ...). I had posted a comparative (Sigma vs Canon) Wide Angle lens question a couple of weeks ago - to which I received a bunch of great replies - so I guess this is somewhat related. Thanks a lot, dave It won't be any different for DOF at same focal length and aperture. For good DOF control with extra wide lenses, switch AF off and focus manually. |
#3
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Tokina Super Wide Angle 12-24mm f/4 - DOF Question
On Nov 21, 1:52 am, frederick wrote:
Dave wrote: Hey there, I was hoping to get testimonials about the Tokina lens' Depth Of Field abilities. I recently bought the Canon Super Wide 10-22 f/3.5 - 4.5 and I'm displeased with it's DOF abilities. I've tried shooting both with AF and MF, with varying small apertures, ISO's, ... and I'm just not getting what I need from this lens. It's a shame as the lens if performing quite well otherwise (barrel distortions, CAs, MTF Res, ...). I had posted a comparative (Sigma vs Canon) Wide Angle lens question a couple of weeks ago - to which I received a bunch of great replies - so I guess this is somewhat related. Thanks a lot, dave It won't be any different for DOF at same focal length and aperture. For good DOF control with extra wide lenses, switch AF off and focus manually. Yes, it should be the same for the same focal length, f/stop and focus distance, But what, exactly, is the OP's problem? Not enough DOF? Too much? Wrong range in focus? I am not sure I understood. |
#4
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Tokina Super Wide Angle 12-24mm f/4 - DOF Question
"Dave" wrote: I was hoping to get testimonials about the Tokina lens' Depth Of Field abilities. I recently bought the Canon Super Wide 10-22 f/3.5 - 4.5 and I'm displeased with it's DOF abilities. I've tried shooting both with AF and MF, with varying small apertures, ISO's, ... and I'm just not getting what I need from this lens. It's a shame as the lens if performing quite well otherwise (barrel distortions, CAs, MTF Res, ...). DOF does not vary significantly with the lens quality (within reason). Your Canon lens is fine. If you want the maximum DOF in landscape work, turn off AF (set the lens to MF), set the focus distance on the lens to 1 meter, use f/16, and use the wide end of the range (16mm and wider). You should find that your images are sharp from quite close to infinity. You might prefer f/11 for sharpness, at which point you may want to stick to focal lengths closer to 10mm. David J. Littleboy Tokyo, Japan |
#5
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Tokina Super Wide Angle 12-24mm f/4 - DOF Question
On Nov 20, 3:08 pm, acl wrote:
On Nov 21, 1:52 am, frederick wrote: Dave wrote: Hey there, I was hoping to get testimonials about the Tokina lens' Depth Of Field abilities. I recently bought the Canon Super Wide 10-22 f/3.5 - 4.5 and I'm displeased with it's DOF abilities. I've tried shooting both with AF and MF, with varying small apertures, ISO's, ... and I'm just not getting what I need from this lens. It's a shame as the lens if performing quite well otherwise (barrel distortions, CAs, MTF Res, ...). I had posted a comparative (Sigma vs Canon) Wide Angle lens question a couple of weeks ago - to which I received a bunch of great replies - so I guess this is somewhat related. Thanks a lot, dave It won't be any different for DOF at same focal length and aperture. For good DOF control with extra wide lenses, switch AF off and focus manually. Yes, it should be the same for the same focal length, f/stop and focus distance, But what, exactly, is the OP's problem? Not enough DOF? Too much? Wrong range in focus? I am not sure I understood.- Hide quoted text - - Show quoted text - Perhaps i should not had left it as implied but not enough DOF of course. I was shooting over the entire range 10mm - 22mm, but saw the worst DOF at 10mm. I was manually focusing too far away possibly, so I'll try David J's suggestion. thanks David J. and frederick! Oh i'm up in the seattle area and lighting is pretty low these days - so I may have to use my monopod or tripod to go above f10 i guess. dave |
#6
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Tokina Super Wide Angle 12-24mm f/4 - DOF Question
Dave wrote:
On Nov 20, 3:08 pm, acl wrote: On Nov 21, 1:52 am, frederick wrote: Dave wrote: Hey there, I was hoping to get testimonials about the Tokina lens' Depth Of Field abilities. I recently bought the Canon Super Wide 10-22 f/3.5 - 4.5 and I'm displeased with it's DOF abilities. I've tried shooting both with AF and MF, with varying small apertures, ISO's, ... and I'm just not getting what I need from this lens. It's a shame as the lens if performing quite well otherwise (barrel distortions, CAs, MTF Res, ...). I had posted a comparative (Sigma vs Canon) Wide Angle lens question a couple of weeks ago - to which I received a bunch of great replies - so I guess this is somewhat related. Thanks a lot, dave It won't be any different for DOF at same focal length and aperture. For good DOF control with extra wide lenses, switch AF off and focus manually. Yes, it should be the same for the same focal length, f/stop and focus distance, But what, exactly, is the OP's problem? Not enough DOF? Too much? Wrong range in focus? I am not sure I understood.- Hide quoted text - - Show quoted text - Perhaps i should not had left it as implied but not enough DOF of course. I was shooting over the entire range 10mm - 22mm, but saw the worst DOF at 10mm. I was manually focusing too far away possibly, so I'll try David J's suggestion. thanks David J. and frederick! Oh i'm up in the seattle area and lighting is pretty low these days - so I may have to use my monopod or tripod to go above f10 i guess. dave You should/could be able to hand hold at 1/16th second or less at 10mm or so. That varies from person to person, shot to shot. If you're anticipating shooting at around that shutter speed, then yes, a tripod is a good idea. |
#7
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Tokina Super Wide Angle 12-24mm f/4 - DOF Question
David J. Littleboy wrote:
"Dave" wrote: I was hoping to get testimonials about the Tokina lens' Depth Of Field abilities. I recently bought the Canon Super Wide 10-22 f/3.5 - 4.5 and I'm displeased with it's DOF abilities. I've tried shooting both with AF and MF, with varying small apertures, ISO's, ... and I'm just not getting what I need from this lens. It's a shame as the lens if performing quite well otherwise (barrel distortions, CAs, MTF Res, ...). DOF does not vary significantly with the lens quality (within reason). Your Canon lens is fine. If you want the maximum DOF in landscape work, turn off AF (set the lens to MF), set the focus distance on the lens to 1 meter, One meter is a bit close unless he has foreground even closer than that. I haven't really used hyperfocal tables but it might be worth glancing at some to get a feel for it (multiply by 1.6x for crop factor). The basic idea is to focus a somewhat closer than the middle of the area you want in focus because except for macro, there tends to be a deeper focus behind the point of focus than in front. Ah, OK David L., sorry, 10mm at f/16 focused at 1m does indeed look fine at infinity up to 0.24m http://www.cambridgeincolour.com/tut...calculator.htm For a 19 inch print at f/8, 2 meters does the trick! use f/16, and use the wide end of the range (16mm and wider). You should find that your images are sharp from quite close to infinity. You might prefer f/11 for sharpness, at which point you may want to stick to focal lengths closer to 10mm. David J. Littleboy Tokyo, Japan |
#8
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Tokina Super Wide Angle 12-24mm f/4 - DOF Question
You should google up "hyperfocal distance" and study the concept.
"Dave" wrote in message ... Hey there, I was hoping to get testimonials about the Tokina lens' Depth Of Field abilities. I recently bought the Canon Super Wide 10-22 f/3.5 - 4.5 and I'm displeased with it's DOF abilities. I've tried shooting both with AF and MF, with varying small apertures, ISO's, ... and I'm just not getting what I need from this lens. It's a shame as the lens if performing quite well otherwise (barrel distortions, CAs, MTF Res, ...). I had posted a comparative (Sigma vs Canon) Wide Angle lens question a couple of weeks ago - to which I received a bunch of great replies - so I guess this is somewhat related. Thanks a lot, dave |
#9
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Tokina Super Wide Angle 12-24mm f/4 - DOF Question
"Paul Furman" wrote in message ...
David J. Littleboy wrote: "Dave" wrote: I was hoping to get testimonials about the Tokina lens' Depth Of Field abilities. I recently bought the Canon Super Wide 10-22 f/3.5 - 4.5 and I'm displeased with it's DOF abilities. I've tried shooting both with AF and MF, with varying small apertures, ISO's, ... and I'm just not getting what I need from this lens. It's a shame as the lens if performing quite well otherwise (barrel distortions, CAs, MTF Res, ...). DOF does not vary significantly with the lens quality (within reason). Your Canon lens is fine. If you want the maximum DOF in landscape work, turn off AF (set the lens to MF), set the focus distance on the lens to 1 meter, One meter is a bit close unless he has foreground even closer than that. I haven't really used hyperfocal tables but it might be worth glancing at some to get a feel for it (multiply by 1.6x for crop factor). The basic idea is to focus a somewhat closer than the middle of the area you want in focus because except for macro, there tends to be a deeper focus behind the point of focus than in front. Ah, OK David L., sorry, 10mm at f/16 focused at 1m does indeed look fine at infinity up to 0.24m http://www.cambridgeincolour.com/tut...calculator.htm For a 19 inch print at f/8, 2 meters does the trick! use f/16, and use the wide end of the range (16mm and wider). You should find that your images are sharp from quite close to infinity. You might prefer f/11 for sharpness, at which point you may want to stick to focal lengths closer to 10mm. David J. Littleboy Tokyo, Japan On a Canon EOS DSLR, f16 is way too small: anything below about f10 is liable to degrade the image through diffraction. Maybe that's part of the OP's problem - trying to get too much DoF. As for the focusing distance, a 12mm lens @ f9.5 focused at 4.5ft will have everything just about as sharp as possible from 2ft to the horizon for prints up to 12*8in @ 300ppi. Paul Edstein |
#10
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Tokina Super Wide Angle 12-24mm f/4 - DOF Question
Dave wrote:
Hey there, I was hoping to get testimonials about the Tokina lens' Depth Of Field abilities. I recently bought the Canon Super Wide 10-22 f/3.5 - 4.5 and I'm displeased with it's DOF abilities. I've tried shooting both with AF and MF, with varying small apertures, ISO's, ... and I'm just not getting what I need from this lens. It's a shame as the lens if performing quite well otherwise (barrel distortions, CAs, MTF Res, ...). I had posted a comparative (Sigma vs Canon) Wide Angle lens question a couple of weeks ago - to which I received a bunch of great replies - so I guess this is somewhat related. Thanks a lot, dave From your posting, I suspect you don't actually know the meaning of the term "depth of field". You have presented no evidence of anything that would indicate what the problem is, but I suspect that it isn't a "depth of field" problem. |
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