F Stops vs T Stops – what is the difference?
70-200mm G lens review at 13thfloorphotography.
The IBELUX 40mm f/0.85 Lens. World’s Shortest Review (Steve Huff).
RX10 and A6000 Image quality comparison at Soundimagesplus.
Sony E PZ 18-105mm f/4G OSS Review (Photographyblog).
A77II Menu system Walkthrough video on Youtube.
See how Evo & BBC Top Gear photographer produces killer car photography (Inmybag).
Sony A7r review at Colbybrownphotography.
Lior: “This is a video I shot with the Sony A7s – a night in the Tel Aviv Jaffa old port. Great place, great camera. Shots were taken in up to ISO 25,600.
https://www.youtube.com/watch?v=oDotTTFCgXs”
Kamila: “I would like to show you timelapse/hyperlapse made with a6000. I took around 10.000 photos in three days. Whole project was made in cooperation with Tropical Islands resort. https://www.youtube.com/watch?v=U2Df7DZOr6U and https://vimeo.com/108408115”
Lee: “I know you sometimes post about interesting new accessories for Sony cameras. I thought you might be interested in the plate I just launched for using the A7/r/s with a loupe, hood, Z-finder, etc. See more at http://www.elliscamera.com/products/asp-a7s/”
Josh: “It is a Behind the Scenes video of a swimwear shoot I did. The shoot was done with a Sony A7s and A7 but the video was shot with a Red Epic Dragon. http://joshmcleodphotography.com/2014/09/26/behind-the-scenes-at-tumbling-waters-retreat/. And here is a link to the YouTube Video: http://youtu.be/mjOXMmYHkZA“
0 Responses
Matt just keeps getting better and better. I use to run into his videos infrequently. However, he’s quickly rising to the top of my list of most respected commentators. This is a bit of an older video and I already knew about the T stop, but at least he took the time to provide some useful comparisons and relate the information over to cinema lenses. If you haven’t watched any of his videos on portraiture work I suggest you take a look- good stuff.
Excellent vidéo !
First because it’s quite technical, but explained in such a simple manner everyone can understand, even me with a very light knowledge of photography
Second because it’s exposed in a very good english, and as it’s not my language, I’m grateful for that.
A point I thought he might have spelled out: aperture determines depth of field, and your ability to do shallow focus, at a certain focal length. Transmission determines low light ability. They are separate things, low lighters should check transmission rather than aperture.
Also, at very high ISO vignetting becomes important. There is no such thing as “easily corrected vignetting” at ISO 25600, because correcting it boosts the noise. And some f/1.4 lenses are over half a stop darker in the corner than others. Here’s a little list I made for some Nikon mount lenses I was looking at:
“Name”, center transmission, corner transmission
“Carl Zeiss Distagon T* Otus 1.4/55 ZF.2”, 1.6, 3.2
“Nikon AF Nikkor 50mm f/1.4D”, 1.4, 3.8
“Nikon AF-S Nikkor 50mm f/1.4G”, 1.5, 3.7
“Nikon AF-S Nikkor 58mm f/1.4G”, 1.6, 2.9
“Sigma 50mm F1.4 EX DG HSM”, 1.5, 3
“Sigma 50mm F1.4 DG HSM Art”, 1.7, 3.2
To Admin…the audio advertisements are ruining your site.
I mentioned the Contour ads and for the first time my comment is waiting to be approved by the Admin… moop.
Hi Michael! I asked google and they told me audio only plays when you hover the ad. Or does it start automatically for you? If yes can you send me a screenshot of the ad? Thanks a lot!
The ad is inconspicuous, “Verizon” loudly screams at you when playing videos or just reading text. This is with Firefox, tried Chrome and the audio wasn’t present. Verizon is a major telecommunications company, so I am sure it is paid. As I am typing this, it has not started. It starts automatically. Mike
LIES! (or lack of info)
The Contour ads definitely play without any interaction.
all the more reason to develop lensless cameras that bend light using gravity