Canon EOS Ra for ASTRO - with RF 85mm f/1.2L USM lens (4K) скачать в хорошем качестве

Canon EOS Ra for ASTRO - with RF 85mm f/1.2L USM lens (4K)

A short clip without spoken commentary showing use with the 30.3 Megapixel Canon EOS Ra camera and subsequent samples from the camera. This is Canon's first Full Frame Mirrorless modified IR-Cut sensor camera - It follows in the footsteps of the EOS 60Da and the Canon 20Da and is designed especially for astrophotography. It has a factory modified sensor which can detect 4x the amount of 656.3 nm frequency produced by many Hydrogen Alpha specific nebulas. This makes it a superb Astro camera for people who want more versatility than using an astro cam designed to be plugged into the back of a telescope. Otherwise, it's almost identical in every way to the EOS R and can use the same optional BG-E22 battery grip. I tested this camera with three lenses: Canon EF 24mm f/1.4L II USM lens Canon EF 50mm f/1.2L USM lens Canon RF 85mm f/1.2L USM lens Since I'm not using an equatorial tracking mount, nor was I stacking images to drawn out even more detail, I elected to use the in-camera JPEG processing and allowed the camera to do most of the work for me. I did need to edit the images to enhance the captured colours and contrast and to crop hard-vignetted corners from the shots taken with the EF 24mm f/1.4L USM lens The 50mmL lens had some light falloff (soft vignetting) at the edges that was correctable in post processing. The RF 85mm f/1.2L USM lens was simply magnificent and required little editing. In-camera lens corrections were applied to all lenses. The colour blue (cyan) was present in shots from the Rho Ophiuchi region of the milky way but needed some coaxing in Photoshop (and via my own camera settings) to raise the saturation further. You can see just how much colour and detail was captured on these 4K images when you look at the live preview on the LCD of the camera. The EF 85mm f/1.2L USM lens has some great technology... including Air Sphere Coated elements and Blue Spectrum Refractive Optics (BR). These reduce backlit lens flare, ghosting and chromatic aberration issues. Coma is incredibly well controlled with this lens. Even at f/1.2 In hindsight, the EOS Ra is certainly up to the task as a portable Astrocam. The ability to see the details and colours of some areas of the Milky Way with Live View was astonishing. The 30x Magnification makes it quite easy to focus on a bright star (or even a dim one). And if you don't mind tweaking the colours slightly afterwards (especially the red/orange/yellow) just a little bit, you can still use this camera for terrestrial imagery. I chose not to post any images taken with night-sky filters. My own in-camera preferences for these shots included the Fine Detail option in the User Defined Settings on the EOS Ra menu - and I bumped up the colour saturation slightly in the personal settings. A 2-sec and 10-sec delay was used for these images to reduce tripod shake. Enjoy.