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auto bracketing
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i have a sony a200 and i want to try hdr but cant seem to set up auto bracketing anyone help?
With bracketing use a tripod and preferrably a remote shutter release. There is a facility on the Sony (and most other SLRs) where you can make various adjstments such as WB bracketing, shutter countdown (2 seconds/10seconds) and exposure bracketing. It should be on a button at the back of your camera under your thumb roughly. If you’re not sure where just look through the manual.
Alan.
ok i got the setting but this is what it gives
BRKc / 0.3ev or 0.7 ev
brk single
brk white balancewhich do i use for hdr?
p.s thanks wonka
From what I have been reading it seems that more people actually do bracketing by taking the same shot multiple times using various shutter speeds rather than by using the bracketing option.
Scotty, you don’t need the bracketing function necessarily however one problem with shooting without it is that by touching the camera between exposures you might see small shifts in your frames. If you use a program like Photomatix which does auto alignment then this isn’t a problem.
I personally do my HDR in the following way.
1. Mount my camera on a tripod
2. Turn the camera to manual
3. Choose an appropriate aperture for adequate depth of field
4. Fire some test exposures at various shutter speeds to see the point the highlights are clipped
5. Dial back half a stop from this value and this is now the first exposure in the series
6. Increase exposure times in 2 stop increments, taking a photo each time until your shadows have detail. This will result in a series of between 3 and 5 exposures.Hope that helps
BRKc / 0.3ev or 0.7 ev
Use .7 ev – it’s as far as Sonys go so this will give you the running order of 0.0ev, -0.7ev, 0.7ev. I don’t know what brk single is and white balance is of no use to you. What you’re trying to do is get an exposure as normal, less exposure (darker but brings in the highlights better) and more exposure (brings out the detail in the shadows).
Yes, you can throw your camera into manual mode and alter exposure using Shutter Speed, Aperture and ISO. The problem there is that by the time you alter the settings the lighting conditions may change, the camera may move or the cow in the field has fecked off. With the camera bracketing it’s 3 images in a second so less is likely to change.
If you buy nothing else get this book. It shows the interaction between the main elements of light capture in laymans terms. OK, it’s off topic but you won’t regret it.
Alan.
We should get commission from Bryan Peterson, I have to agree with Alan to the above book, simple, understandable and opens your eyes to Manual mode.
Alan,
I would say braketing anything under 1 stop intervals for HDR is a waste of time. I think Scotty needs to be separating the exposures by between 1.5 and 2 stops (e.g -3. -1.5, 0. +1.5. +3.0). This example gives an exposure range of six stops and an approximate dynamic range of 14 stops.
Scotty, if your camera doesn’t give autobracketing at greater than 1 stop intervals, you are better off bracketing manually.
Scotty, yes, I’ve checked your camera model.
You are correct that the Sony Alpha only offers a 3 exposure bracket with a maximum step of 0.7 stops.
The maximum sequence possible is therefore (-0.7, 0, +0.7)
This is not large enough for HDR, so your only option is manual.
The option I use is to shoot RAW and adjust in lightroom but that’s a whole days argument – it really depends on what level you see yourself at.
Alan
ok i had a go and came up with these 3 images am i right?
feel free to mess with them i am very greatfull for everyones help
:DScotty,
These exposures look like good candidates for HDR and you have spaced your exposures well in manual mode as I suggested.
However, I notice from the EXIF that they were all taken with different apertures (F18, F29, F4.5).
For HDR you should really be keeping a constant aperture and sequencing by adjusting the shutter speed. In this subject it might not matter too much but keeping the aperture constant is a good habit in HDR.
Try this
F18, 1/60 sec
F18, 1/15 sec
F18, 1/4 sec
F18, 1 secThis will yield a 4 exposure HDR spanning 8 stops exposure and approx 16 stops of DR
Yes, but your highlights are still clipped.
Try my 4 exposure sequence at constant aperture that I have suggested above.
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