dslr camera tricks image
Kabin
how much Amp is needed to charge DSLR battery?? i am planning to buy Revolve xeMilo or xeMini series portable solar charger (http://www.revolveusa.com/index.php?p=1_17_xe-series) .
Any device with an input power requirement of 5V DC and 1.2A (1,200mA) or less is compatible with ÏeMini. Any device with an input power requirement of 5V DC and 2A (2,000mA) or less is compatible with ÏeMilo. so can they charge DSLR camera (normally 7.4V battery of most DSLR cameras). if not, can you suggest other portable solar charger mainly for trekking purpose.
Answer
Yes, you can charge a dSLR from a portable solar system. But, no, you cannot do it from a USB system (without being very slow & inefficient about it). Electricity is much like water... going from 5V USB up to 7.4V is like pushing water up hill, and that requires a pump (complexity you don't need). Plus, these little revolve batteries will not be generating anywhere near enough power to support a dSLR battery under normal use.
The solution is to match a 12V solar panel to the demand for power your camera have. For example, most dSLR cameras have a battery capacity (in terms of recharging it) of approx 16 Watt-hours. If you told me that you would drain the camera battery in 2 days under normal use, I would tell you to top it up every day and the power needed would be 8 Watt-hours each day (ie half).
To offset a demand of 8 Watt-hours per day, I would suggest that the smallest of the 12V panels would do the trick. 4 Watts would be enough, but most manufacturers start at a 5W size...
http://www.modernoutpost.com/shop/solar-panels/224-powerfilm-folding-5.html
http://www.modernoutpost.com/shop/solar-panels/237-sunlinq-65.html
To compare, the Revolve xeMilo only produces 1.2 Watts.
If you have any other devices to charge, then 5 Watts will come in handy.
Next, you need to store the solar power in a battery pack that can support a charger for your camera battery. Something small like the Novuscell 24 is a good match for a 5W panel...
http://www.modernoutpost.com/shop/battery-packs/251-novuscell-24.html
Lastly, choose a 12V DC charger for your camera battery. DO NOT attempt to use the charger that came with your camera, as this is an AC model designed for home use... seek a DC model that can be used from your car or from a 12V solar kit. I strongly recommend a universal model like the Ansmann Vario as it can adapt to just about any camera model you will have now or in the future, plus will handle the smaller camera & phone batteries, GPS batteries, AA & AAA batteries, etc...
http://www.modernoutpost.com/shop/battery-chargers/267-digicharger-vario.html
That's about it. A system to properly support your dSLR camera.
Now, having said all that, I have a small universal charger that will in fact charge 7.4V batteries from a 5V USB source. It is slow, but it works...
http://www.modernoutpost.com/shop/battery-chargers/268-3-way-universal-charger.html
Note that small solar charger/battery packs like the Revolve only have the solar power to charge approx 20% of your camera battery on an ongoing daily basis (summertime with good sky exposure all day). The storage capacity of the xeMilo Revolve can support one full charge of your camera, but then it is dead, and will take approx 5 days to fill again (you can use it daily of course, but you can only take out what the sun has put in).
I hope this helps!
Yes, you can charge a dSLR from a portable solar system. But, no, you cannot do it from a USB system (without being very slow & inefficient about it). Electricity is much like water... going from 5V USB up to 7.4V is like pushing water up hill, and that requires a pump (complexity you don't need). Plus, these little revolve batteries will not be generating anywhere near enough power to support a dSLR battery under normal use.
The solution is to match a 12V solar panel to the demand for power your camera have. For example, most dSLR cameras have a battery capacity (in terms of recharging it) of approx 16 Watt-hours. If you told me that you would drain the camera battery in 2 days under normal use, I would tell you to top it up every day and the power needed would be 8 Watt-hours each day (ie half).
To offset a demand of 8 Watt-hours per day, I would suggest that the smallest of the 12V panels would do the trick. 4 Watts would be enough, but most manufacturers start at a 5W size...
http://www.modernoutpost.com/shop/solar-panels/224-powerfilm-folding-5.html
http://www.modernoutpost.com/shop/solar-panels/237-sunlinq-65.html
To compare, the Revolve xeMilo only produces 1.2 Watts.
If you have any other devices to charge, then 5 Watts will come in handy.
Next, you need to store the solar power in a battery pack that can support a charger for your camera battery. Something small like the Novuscell 24 is a good match for a 5W panel...
http://www.modernoutpost.com/shop/battery-packs/251-novuscell-24.html
Lastly, choose a 12V DC charger for your camera battery. DO NOT attempt to use the charger that came with your camera, as this is an AC model designed for home use... seek a DC model that can be used from your car or from a 12V solar kit. I strongly recommend a universal model like the Ansmann Vario as it can adapt to just about any camera model you will have now or in the future, plus will handle the smaller camera & phone batteries, GPS batteries, AA & AAA batteries, etc...
http://www.modernoutpost.com/shop/battery-chargers/267-digicharger-vario.html
That's about it. A system to properly support your dSLR camera.
Now, having said all that, I have a small universal charger that will in fact charge 7.4V batteries from a 5V USB source. It is slow, but it works...
http://www.modernoutpost.com/shop/battery-chargers/268-3-way-universal-charger.html
Note that small solar charger/battery packs like the Revolve only have the solar power to charge approx 20% of your camera battery on an ongoing daily basis (summertime with good sky exposure all day). The storage capacity of the xeMilo Revolve can support one full charge of your camera, but then it is dead, and will take approx 5 days to fill again (you can use it daily of course, but you can only take out what the sun has put in).
I hope this helps!
How to blur background in portrait shots?
randomthou
I have Panasonic FZ 30. In manual mode I can go up to around f3.5 depending upon shutter speed. But at this aperture, I cannot effectively blur the background while taking portrait shots. i have seen that DSLR cameras taking quite shots from quite close distance but yet getting nice blur effect even though full zoom is not done. I can do full zoom and get better blur effect but then if the subject is not so far I cannot cover much of its body.
What is the trick?
Answer
It is harder to get good bokeh with a point and shoot because the sensor is so small in relation to the aperature. As you have noted longer focal length also increases bokeh so you can use your feet to back up while zoomed out as far as you can to still get what you want in frame. A couple of other things that may help. Get some distance between your subject and the background and remember 1/3 of the area in focus is in front of your focal point and 2/3 is behind the focal point.
As DC said it can be done with photoshop. You make a copy of the base shot as a layer, in that layer cut out what you want to be sharp then apply a gausian blur to the rest. It never to me quite looked as good as bokeh gotten in camera but its usable
I hope this helps but unfortunatly you will not get the control with your point and shoot that you can with a DSLR
It is harder to get good bokeh with a point and shoot because the sensor is so small in relation to the aperature. As you have noted longer focal length also increases bokeh so you can use your feet to back up while zoomed out as far as you can to still get what you want in frame. A couple of other things that may help. Get some distance between your subject and the background and remember 1/3 of the area in focus is in front of your focal point and 2/3 is behind the focal point.
As DC said it can be done with photoshop. You make a copy of the base shot as a layer, in that layer cut out what you want to be sharp then apply a gausian blur to the rest. It never to me quite looked as good as bokeh gotten in camera but its usable
I hope this helps but unfortunatly you will not get the control with your point and shoot that you can with a DSLR
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Title Post: Can portable solar charger charges the DSLR camera battery? especially need for trekking.?
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Rating: 92% based on 9788 ratings. 5 user reviews.
Author: Yukie
Thanks For Coming To My Blog
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