getting all over sharpness?
Posted 02/04/2012 - 19:24
Link
You could also try image stacking, see following for an example :-
https://www.pentaxuser.com/forum/topic/focus-stacking-27255.
You will need a program such as CombineZP and, of course, a stable tripod
regards
Bernard
https://www.pentaxuser.com/forum/topic/focus-stacking-27255.
You will need a program such as CombineZP and, of course, a stable tripod
regards
Bernard
Posted 02/04/2012 - 19:36 - Helpful Comment
Link
Hi,
your angle to the subject (the left looks to be he biggest issue), the aperture as suggested should be much smaller and therefore a slower shutter speed and/or more light.
If the light available has to stay the same I'd try 400 ISO and 1/30th with two stops less aperture to start. You may need a tripod for slower.
your angle to the subject (the left looks to be he biggest issue), the aperture as suggested should be much smaller and therefore a slower shutter speed and/or more light.
If the light available has to stay the same I'd try 400 ISO and 1/30th with two stops less aperture to start. You may need a tripod for slower.
Posted 02/04/2012 - 19:51
Link
Frogherder wrote:
You could also try image stacking, see following for an example :-
https://www.pentaxuser.com/forum/topic/focus-stacking-27255.
You will need a program such as CombineZP and, of course, a stable tripod
regards
Bernard
Link does not work...
You could also try image stacking, see following for an example :-
https://www.pentaxuser.com/forum/topic/focus-stacking-27255.
You will need a program such as CombineZP and, of course, a stable tripod
regards
Bernard
k-5 IIs, Pentax 60-250, 17-70, 100macro WR, 50mm F2,
AF50 F1.4, Siggy 10-20, Siggy 100-300 F4, ..Pentax Af 160 ring flash
AF50 F1.4, Siggy 10-20, Siggy 100-300 F4, ..Pentax Af 160 ring flash
Posted 02/04/2012 - 21:10
Link
col55555ine wrote:
It does if you remove the trailing full stop.
Frogherder wrote:
You could also try image stacking, see following for an example :-
https://www.pentaxuser.com/forum/topic/focus-stacking-27255.
You will need a program such as CombineZP and, of course, a stable tripod
regards
Bernard
Link does not work...You could also try image stacking, see following for an example :-
https://www.pentaxuser.com/forum/topic/focus-stacking-27255.
You will need a program such as CombineZP and, of course, a stable tripod
regards
Bernard
.
Pentax K-3, DA18-135, DA35 F2.4, DA17-70, DA55-300, FA28-200, A50 F1.7, A100 F4 Macro, A400 F5.6, Sigma 10-20 EXDC, 50-500 F4.5-6.3 APO DG OS Samsung flash SEF-54PZF(x2)
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Pentax K-3, DA18-135, DA35 F2.4, DA17-70, DA55-300, FA28-200, A50 F1.7, A100 F4 Macro, A400 F5.6, Sigma 10-20 EXDC, 50-500 F4.5-6.3 APO DG OS Samsung flash SEF-54PZF(x2)
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Posted 02/04/2012 - 21:16 - Helpful Comment
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Stop the aperture down to around f/11 and you'll have a much greater depth of field (of course you'd have to adjust the shutter speed and/or ISO accordingly.)
The 50mm lens is acting as a short telephoto which at close range will have a fairly narrow depth of field. By using a wider angle lens, eg around 28 to 35mm, you'd probably get away with an aperture around f/8, possibly the optimum sharpness of the lens and have the lot reasonably sharp.
Regarding your actual photo and the set up you used to take it and to keep the effect you achieved, just try focussing on the front food items to have those sharp then if those behind are going out of focus it might look quite effective and give the picture depth. I see you used spot metering, which is fine for that, but you'll need to re-frame the photo without changing focus. I find having the camera focus set up on the AF button rather than the half-press shutter release prevents the camera wanting to refocus as you take the shot.
As it is and you obviously realise, that picture just looks wrong as only the middle items are sharp. Nice overall effect though and nearly there!
John
The 50mm lens is acting as a short telephoto which at close range will have a fairly narrow depth of field. By using a wider angle lens, eg around 28 to 35mm, you'd probably get away with an aperture around f/8, possibly the optimum sharpness of the lens and have the lot reasonably sharp.
Regarding your actual photo and the set up you used to take it and to keep the effect you achieved, just try focussing on the front food items to have those sharp then if those behind are going out of focus it might look quite effective and give the picture depth. I see you used spot metering, which is fine for that, but you'll need to re-frame the photo without changing focus. I find having the camera focus set up on the AF button rather than the half-press shutter release prevents the camera wanting to refocus as you take the shot.
As it is and you obviously realise, that picture just looks wrong as only the middle items are sharp. Nice overall effect though and nearly there!
John
John K
Posted 02/04/2012 - 22:27
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I think the OP needs to buy a basic photography guide. What do people recommend?
G
G
Keywords: Charming, polite, and generally agreeable.
Posted 02/04/2012 - 22:48 - Helpful Comment
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Could try this:
http://www.cambridgeincolour.com/tutorials/depth-of-field.htm
Plus a trip to the local library and see what's available there.
John
http://www.cambridgeincolour.com/tutorials/depth-of-field.htm
Plus a trip to the local library and see what's available there.
John
John K
Posted 02/04/2012 - 23:38
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Thanks guys I was working in a tight place tripod just kept getting in the way, had to use natural light too, had to take 40 to get 10 right, but you know when the get on the pc you find more issues, I'll post one I am happy with hopefully it up to standards. I'll try all the advice on my next food shot thanks guys
Posted 02/04/2012 - 23:47
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Cityheadwear wrote:
Thanks guys I was working in a tight place tripod just kept getting in the way, had to use natural light too, had to take 40 to get 10 right, but you know when the get on the pc you find more issues, I'll post one I am happy with hopefully it up to standards. I'll try all the advice on my next food shot thanks guys
If space is the problem, then using a wider angle lens would help solve many of the issues you're finding. Try and use the tripod, it will help no end as you can stop the aperture down and use a longer exposure to get the depth of field you need.Thanks guys I was working in a tight place tripod just kept getting in the way, had to use natural light too, had to take 40 to get 10 right, but you know when the get on the pc you find more issues, I'll post one I am happy with hopefully it up to standards. I'll try all the advice on my next food shot thanks guys
You're nearly there.
John
John K
Posted 03/04/2012 - 00:17
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I don't think you can get the effect you want with natural light unless you're outside in the Mediterranean. Kick in some extra light with a couple of flashguns (with or without brollies) and reduce your aperture.
Food photographers used to use floodlights, which quickly melted ice cream and discoloured other foods, so they swapped the ice cream for shaving cream or something similar and used porcelain eggs instead of proper hard-boiled eggs. The Advertising Standards Authority was kept busy with complaints from people who'd bought a product on the basis of "pack" shots that turned out to be some distance from reality.
Al
Food photographers used to use floodlights, which quickly melted ice cream and discoloured other foods, so they swapped the ice cream for shaving cream or something similar and used porcelain eggs instead of proper hard-boiled eggs. The Advertising Standards Authority was kept busy with complaints from people who'd bought a product on the basis of "pack" shots that turned out to be some distance from reality.
Al
Posted 03/04/2012 - 00:36
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JAK wrote:
By using a wider angle lens, eg around 28 to 35mm, you'd probably get away with an aperture around f/8, possibly the optimum sharpness of the lens and have the lot reasonably sharp.
You would have a greater depth of field only if you would stay the same distance from the subject. If you get closer to keep the same framing, then your depth of field will be the same as the longer focal length lens.
By using a wider angle lens, eg around 28 to 35mm, you'd probably get away with an aperture around f/8, possibly the optimum sharpness of the lens and have the lot reasonably sharp.
Yves (another one of those crazy Canucks)
Posted 03/04/2012 - 01:31
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I hear what you are saying but not convinced about that.
Put on am extreme wide angle, say a Sigma 10mm, frame the subject as before and even the house across the road will be within the depth of field, even with the lens at a wide aperture.
Take that same photo with a small sensor camera (a typical compact or phone with camera,) the shorter focal length will hardly allow you to show any depth of field at all.
Go the other way and use a longer telephoto and it might not then be possible to get sufficient DOF to encompass the whole subject.
John
Put on am extreme wide angle, say a Sigma 10mm, frame the subject as before and even the house across the road will be within the depth of field, even with the lens at a wide aperture.
Take that same photo with a small sensor camera (a typical compact or phone with camera,) the shorter focal length will hardly allow you to show any depth of field at all.
Go the other way and use a longer telephoto and it might not then be possible to get sufficient DOF to encompass the whole subject.
John
John K
Posted 03/04/2012 - 01:35
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Short lenses to a standard lens is generally prefered. Most Pro's who shoot food use a shift lense and wider apertures to isolate the food yet keep it all in focus. Using smaller format and not having the option of a tilt shift lens put you at a disadvantage.
It's back to using the right tool for the job (in as much as making the job easier). There is plenty of info on the web about food photography and equipment types.
Just like getting up to the 15th floor.
Elevator-fit for purpose with very little effort on your part.
Stairs-fit for purpose, still get there but with a lot more effort.
Best regards
It's back to using the right tool for the job (in as much as making the job easier). There is plenty of info on the web about food photography and equipment types.
Just like getting up to the 15th floor.
Elevator-fit for purpose with very little effort on your part.
Stairs-fit for purpose, still get there but with a lot more effort.
Best regards
Too far from a shore.
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11 posts
17 years
Chef Kay
any help please keep the whole picture in focus not always helpful in food shots