Lunch atop a (Springfield) skyscraper

Lunch atop a (Springfield) skyscraper
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20h
comment Does a full frame with a teleconverter perform better than an APS-C without a teleconverter?
Another aspect you ignore are the effects of TCs on geometric distortion. Most telephoto zoom lenses demonstrate mild pincushion distortion at the long end (which is where you'd generally use a zoom lens with a TC). Most quality TCs introduce a little barrel distortion that counters the pincushion.
20h
comment Does a full frame with a teleconverter perform better than an APS-C without a teleconverter?
And if you're going to penalize the TC for the near negligible loss in transmission vs. air, then you probably should include the comparative efficiencies of the two sensors as well. Larger pixels of the same generation of design are always more efficient than smaller ones, and usually by a more significant margin than the difference between high grade optical glass and air.
20h
comment Does a full frame with a teleconverter perform better than an APS-C without a teleconverter?
Look, the application of a question such as that posed by the OP does not occur in pure theory. It occurs in a decision of what gear to purchase and use. Your answer strongly implies that the APS-C body = lens will always outperform the FF body + TC + lens. That is far form being the case for a variety of reasons. Especially since the OP has not clarified exactly what is meant by "image quality" which can be applied in a number of ways.
20h
comment Does a full frame with a teleconverter perform better than an APS-C without a teleconverter?
Not to mention that I know of no manufacturer that makes a TC exactly equal to the ratio of their FF and APS-C sensors. I'm also not aware of a manufacturer that makes an APS-C and a FF model with the exact same number of effective pixels. So your primary assumption has no real world application. Those differences have to taken into account when actually comparing.
21h
comment Does a full frame with a teleconverter perform better than an APS-C without a teleconverter?
So now the converter magnifies the physical properties of the light waves/photons? No. The wavelengths and size of the photons are not enlarged passing through a refractive surface. They are only redirected. Diffraction is a property of the actual shape and size of the aperture blades, not the apparent size of the aperture. A smaller pixel will always have a lower DLA than a larger one.
21h
comment Does a full frame with a teleconverter perform better than an APS-C without a teleconverter?
Your assertion regarding noise levels requires that the smaller pixels are just as efficient as the larger ones. That is seldom the case. Again, the properties of light don't change with the size of the sensor. Additionally, smaller pixels usually mean a lower percentage of the light falling on a sensor actually makes it to the bottom of a pixel well. Even with so-called "gapless" sensors, the edges of the smaller microlenses are a greater percentage of the whole, and thus less efficient.
1d
revised Can I shoot video with a Canon Rebel XT/350D?
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1d
comment Blown out blue/red light making photos look out of focus
What lens/settings were you using before?
1d
revised Blown out blue/red light making photos look out of focus
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1d
comment Blown out blue/red light making photos look out of focus
If you're using the same Tv and Av but moved ISO from 6400 to 3200 then you're exposing one stop darker. That should definitely help reduce the risk of blowing out the red channel.
1d
revised Does a full frame with a teleconverter perform better than an APS-C without a teleconverter?
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1d
revised Does a full frame with a teleconverter perform better than an APS-C without a teleconverter?
added 489 characters in body
1d
comment Does a full frame with a teleconverter perform better than an APS-C without a teleconverter?
You also have a lower DLA with smaller pixels. If you need to shoot at f/11 and the DLA of your FF 5D3 sensor is f/10.1 and the DLA of your APS-C 7D2 sensor is f/6.6 which camera is going to have the advantage?
1d
comment Does a full frame with a teleconverter perform better than an APS-C without a teleconverter?
Teleconverters are common among the top shooters at professional sporting events. Part of it has to do with only carrying a 300mm f/2.8 instead of also lugging around a 400mm f/4 or only carrying a 400mm f/2.8 instead of also lugging around a 500mm or 600mm lens as well. You see very few APS-C cameras in the mix among the upper level of sports photographers. The loss in AF performance with the narrower baseline is just too much.
1d
comment Does a full frame with a teleconverter perform better than an APS-C without a teleconverter?
You also give up the wider baseline of the FF AF system. It's always a set of tradeoffs.
1d
comment Does a full frame with a teleconverter perform better than an APS-C without a teleconverter?
Your answer applies only to the FF vs. APS-C comparison if both have the same number of pixels and planned display size requires more resolution than the cropped FF image can display. And you do still give up about a stop of S/N ratio in low light with the APS-C + lens vs. the FF + 1.4X + lens.
1d
comment Does a full frame with a teleconverter perform better than an APS-C without a teleconverter?
The larger mirror and wider baseline for AF gives FF a distinct advantage over APS-C. Just ask anyone who has used either a 1D X or 5D Mark III (both have the same AF sensor) and a 7D Mark II (which has a very similar but smaller AF sensor) a lot. Overall accuracy and consistency are better with the FF cameras. And both of those FF focus fine up to f/5.6 on most or all of the focus points and focus well with the center point at f/8. If you start with an f/2.8 lens, even a 2X only slows you to f/5.6. Remember, "best lenses" eliminates variable aperture zooms.
1d
revised Does a full frame with a teleconverter perform better than an APS-C without a teleconverter?
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1d
answered Does a full frame with a teleconverter perform better than an APS-C without a teleconverter?
1d
comment How to convert JPEG to RAW in Photoshop or similar?
Raw files don't have 12-14-bits per color channel. They have a 12-14-bit monochromatic luminance value per pixel. Each pixel is filtered for either red, or green, or blue. When the raw file is demosaiced colors for each pixel are interpolated based on the monochromatic luminance values of adjacent pixels filtered for the other two colors as well as the luminance values of nearby pixels filtered for the same color as the pixel in question.