Lightnings taking a ride

by ceinmart

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4

The ratio f/2.8 means the diameter of the entrance pupil is equal to the focal length divided by 2.8. The key thing to note about the above is that the entrance pupil is the image of the aperture stop as seen through the front of the lens, the ratio does not depend on the physical size of the aperture itself. A rear-mounted 2x teleconverter, such as you ...


3

Bulb mode holds the shutter open until you close it (or allow it to close). As you said, hold the shutter release down, or use a wireless remote. If you want more precise timing, something like TriggerTrap is what you want.


2

Have a look at http://www.photoguard.co.uk/digital-camera-insurance.asp Also check your credit card insurance. Some cover this as part of the yearly fees.


2

The A6000 is impressive camera with very sharp sensor. Surely to use it at best you need better lenses than 16-50. The good news is that these lens exist: the Zeiss/Sony, the old MF lenses (Canon FD 50 1.2 1.4) Zeiss Planar and so on. The little Sony 1650 is not bad in absolute, I can say that it is very good, considering the cost. If you use it with ...


1

I think logic will tell you what the problem is: When all three modes are used without flash, the image looks the same. When all three modes are used with flash, the images are different. So, let's investigate the flash. Now, what makes a flash work? Well, we have a power source, a xeon bulb, and a large capacitor. More than likely, your batteries ...


1

Lenses are interchangeable if they are made for the same mount and cover at least the imaging circle of the camera. Unfortunately, Sony offers a lot of combinations and has even changed naming recently. They have 2 mounts, E-mount and A-mount. Both of these have APS-C or Full-Frame coverage, so there are in all 4 combinations (APS-C A-mount, Full-Frame ...


1

How do I map these to Lightroom Lr calculates colour temperature and tint based on white balance coefficients in the raw file, not based on the camera settings for colour temperature and colour bias (AB/MG). When the camera settings for colour temperature, amber-blue (those are in fact fine adjustments of colour temperature; so they make for 1 parameter ...


1

The overall answer to your question: The system used by most digital cameras is based on the way color was fine-tuned in the film era. The color temperature setting corresponds to the film selected, and the AB and GM settings correspond to bias introduced by color conversion filters used during shooting or color compensating filters used during printing to ...


1

"A-B" is "amber-blue", or warmth bias; "G-M" is "green-magenta", or tint. The A-B setting is essentially a bias you can control around the colour temperature, so that if your camera would ordinarily have set the colour temperature to 5500K, a "A" filter setting will chose a slightly higher colour temperature so that the picture is rendered a little warmer ...


1

I don't have any link but I'm an sony A7 user and if you have it try to experiment at the highest speed (1/8000) with and whitout the first electronic curtain shutter. if your picture has bokeh you'll the shape modified by this factor. It may depends on the electronic speed of reading/writing. From 1/1000 to 1/8000 there is a clear effect, the faster the ...



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