I am so addicted to watching Christopher Frost's videos I am watching a lens review for a APS-C lenses which I wont ever own. Ah well... nice to see 7Art is still making nice lenses.
Pretty decent actually. Though slower, they seem to perform better and more evenly than other cheap cine lenses. Probably a good offer for the whole 6 lens kit if the other three have similiar performance to these.
Always glad to see your review of a lens I've had my eye on, sir. Looking forward to your takes on the next 3 in the set. As a filmmaker, I personally shoot the most on Super35 between 35-50mm. I've been hearing that, for their quality in the context of the cine lens category, these lenses are at an outstandingly low price, especially since they supposedly match one another overall throughout the set. I'd be really curious for your observations about how well the next 3 do match. Really dug that you compared the visuals side by side by side here. Thank you for the excellent work!
Since christopher does no9t rly review cine lenses, I was on the edge of my seat since the day they released, hoping he would make a video on t these, thanks man
Great Videos man, I watcch them as soon as you post them, and I can tell you, not only photographers watch your videos, I myself am a hybrid shooter and I know you don't review many cine lenses, but If you would review them more, I know people would like them. But great videos man.
T number is actually a light transmission lab testing done. F number is kinda just guestimated lol. There can be f1.8 and f2.8 lenses that are actually both t2.2. it's a more accurate way if measuring light transmission. T ratings are usually a bit higher than what they say with f stop rating. In general .2~ish lower with f number compared to their t rating. T2 equal ish to f1.8. it varies with focal length and widest aperture to begin with though
T is about light transmission, two lenses at the same T stop will have the same exposure all other things being equal. F stop is about the size of the opening of the lens relative to its focal length, and determines things like how much of the scene is in focus. T stop is more important for videomaking, F stop for photography.
@@nicedward7544f stop is not guesstimated, it’s a legitimate measurement but it doesn’t actually calculate the amount of light that hits the sensor. Also, a lenses t stop will always be lower than it’s f stop so an f/2.8 lens cannot have a t stop of 2.2. F stops are calculated by dividing the lens’s focal length by the diameter of the aperture. A t stop uses the f stop and divides it by the square root of the transmittance of the lens. In layman’s terms, f stop calculates the opening of the lens while t stop calculates the amount of light that goes through the lens. This will affect your image because f stops are not wholly indicative of the amount of light gathered. Theoretically, an f/2.8 lens can have a t stop equivalent to an f/4 lens with bad coating and design. So when you’re exposing your image across a set of lenses, t stops offer a more accurate exposure reading than f stops because they are actually calculating the amount of light being transferred. It’s worth noting that the differences are not usually that major, especially with modern lenses
The F stop is determined by the ratio of the opening at the front of the lens to the focal length of the lens. That's why a 600MM f/4 has such a huge piece of glass on the front. But the T stops are calculated by a much more complicated formula. It takes into account more than the geometry of the lens, such as the quality of the glass. That's something that can vary from lens to lens, even within lenses of the same manufacture.
Oh american, I suppose. Sue a lady with cat in microwave :) not other countries manufacturers :))). You are getting many times cheaper product and shouting about your hurt feelings. Also what would you do if tests would show that 10mm is actually T2.1, and other lenses T1.8?
I am so addicted to watching Christopher Frost's videos I am watching a lens review for a APS-C lenses which I wont ever own. Ah well... nice to see 7Art is still making nice lenses.
Pretty decent actually. Though slower, they seem to perform better and more evenly than other cheap cine lenses. Probably a good offer for the whole 6 lens kit if the other three have similiar performance to these.
Always glad to see your review of a lens I've had my eye on, sir. Looking forward to your takes on the next 3 in the set. As a filmmaker, I personally shoot the most on Super35 between 35-50mm.
I've been hearing that, for their quality in the context of the cine lens category, these lenses are at an outstandingly low price, especially since they supposedly match one another overall throughout the set. I'd be really curious for your observations about how well the next 3 do match. Really dug that you compared the visuals side by side by side here. Thank you for the excellent work!
Glückwunsch zum 15 jährigen. 🎉
Vielleicht bringt ihr ja auch ein Buch raus mit den schönsten Bildern der Destination Reihe. 😁
Since christopher does no9t rly review cine lenses, I was on the edge of my seat since the day they released, hoping he would make a video on t these, thanks man
7Artisans really went overboard with the font faces on these lenses :)
Chinese/japanese designers not professionals of western tipography...
Great Videos man, I watcch them as soon as you post them, and I can tell you, not only photographers watch your videos, I myself am a hybrid shooter and I know you don't review many cine lenses, but If you would review them more, I know people would like them. But great videos man.
New to photo, love ur testing! Keep it up!!!!
That 10 and 25 would be tempting if I had an RF mount Red. My friend has one and he loves the NiSi Athena Prime and he'd probably like these too.
The "Hope" font looks something you can hang in your home from Etsy or any craft store.
No return policy on Amazon for these lenses vs a return policy for the Sirui Nightwalker lenses makes this an easy choice.
I purchased the 16mm, 35mm, and 50mm on Amazon. There is an option that shows (for me at least) to return these if I so choose.
I was wondering when and if they'd ever do cine lenses
Looks like 25mm would works with full frame in video mode and active ibis on.
it probably would be ok, but the corners would be very dark and soft. better options out there in 24ish mm.
Is the 10 mm advisable for landscape photography?
25mm performed the best in that trio.
What's the difference between F5.6 and T5.6?
T number is actually a light transmission lab testing done. F number is kinda just guestimated lol. There can be f1.8 and f2.8 lenses that are actually both t2.2. it's a more accurate way if measuring light transmission. T ratings are usually a bit higher than what they say with f stop rating. In general .2~ish lower with f number compared to their t rating. T2 equal ish to f1.8. it varies with focal length and widest aperture to begin with though
T is about light transmission, two lenses at the same T stop will have the same exposure all other things being equal. F stop is about the size of the opening of the lens relative to its focal length, and determines things like how much of the scene is in focus. T stop is more important for videomaking, F stop for photography.
@@nicedward7544f stop is not guesstimated, it’s a legitimate measurement but it doesn’t actually calculate the amount of light that hits the sensor. Also, a lenses t stop will always be lower than it’s f stop so an f/2.8 lens cannot have a t stop of 2.2.
F stops are calculated by dividing the lens’s focal length by the diameter of the aperture. A t stop uses the f stop and divides it by the square root of the transmittance of the lens.
In layman’s terms, f stop calculates the opening of the lens while t stop calculates the amount of light that goes through the lens.
This will affect your image because f stops are not wholly indicative of the amount of light gathered. Theoretically, an f/2.8 lens can have a t stop equivalent to an f/4 lens with bad coating and design. So when you’re exposing your image across a set of lenses, t stops offer a more accurate exposure reading than f stops because they are actually calculating the amount of light being transferred.
It’s worth noting that the differences are not usually that major, especially with modern lenses
@@nicedward7544 Well in theory its measured. Looks like our T2.1 10mm here wasn't actually T2.1
The F stop is determined by the ratio of the opening at the front of the lens to the focal length of the lens. That's why a 600MM f/4 has such a huge piece of glass on the front. But the T stops are calculated by a much more complicated formula. It takes into account more than the geometry of the lens, such as the quality of the glass. That's something that can vary from lens to lens, even within lenses of the same manufacture.
Why does 7Artisans insist on using horrible fonts that DO NOT MATCH the rest of the visual design in these lenses?
So you can just paint it black and put sticker
I may be the only one that like it. it feel light a race car to me lol
I am pretty sure the 10mm is t2.8 and that is why it is darker
So 10mm is a fake t2.1? Someone should sue so they can be more honest with labeling the product
it may be do to the venyeting but you may truly have a t2.1 death of filed
Oh american, I suppose. Sue a lady with cat in microwave :) not other countries manufacturers :))). You are getting many times cheaper product and shouting about your hurt feelings.
Also what would you do if tests would show that 10mm is actually T2.1, and other lenses T1.8?