Mostly text, it was 2 years that I used a Yongnou 50 1.4 Lens. Honestly, I’ve been looking for an EF 50 1.4 for a while. There are some reasons that I really wanted to swap the lens back;
1. The focusing speed is very slow in low light (good quality but slow).
2. Sometimes (Mostly), not in focus, even I lowered the F stops to 2.8 (Not sharp).
And, 3. It got a conflict if I used a flash. Do you still remember my flash? It is a Yongnou 568 exII. They are the same brand, but they didn’t work together, if I attached the flash, the lens got an error code of err 01. Which means that the F stop won’t work, I still got the very bright images due to the lens diaphragm’s malfunction.
So, here is what I’ve tested on the old Canon body a 650D, still works both the flash and lens.
There are reasons and pros for me (and you) to use an EF 50 1.4 on Canon R series;
1. It has a lens profile, the Yongnou doesn’t have one, and even though they have a USB port for firmware update, the latest models that the firmware can support are 80D and 6DII.
2. It was a HUGE comeback for the 50 1.4 in performance. If you are using a DSLR, the Yongnou might be suitable, but the EF 50 1.4 might not, since the wide aperture causes misfocusing, the image might not be sharp if your camera doesn’t have a micro adjustment. But for a R series, they don’t have a mirror for pre focus, it is just the image that goes directly to the sensor, so they have no micro adjustment function on R series. Even if the lens isn’t calibrated, the body’s sensor will always compute and operate the focusing motor of the lens by the final result on sensor directly. Which means that EF 50 1.4 are now more suitable in R series than old DSLR series.
Finally, 3. Price, Let’s compare the 50 stm and RF 50. They are no different, if the lens are in their top condition, RFs are a little better since they are newer, BUT 2x price of EF 50 1.8, why did I talk about 1.8? It about the price per performance, if you already have an EF converter, the price of RF 50 1.8 is the same of mint condition EF 50 1.4. Then if we use the 50 1.4 we will get the benefits at low light and wider aperture, why don’t we have this? That’s why the 50 1.4 are quickly sold on Facebook marketplace, The R series users are looking for it. How about 50 1.2L? In my opinion the 1.2 L is too much for me to use, if the low light 1.4 in R series with a little more ISO is okay for me. Also the 1.2 might cause a misfocus. And the price …. Forget about it 🤣
That’s all for Today, I hope that This might help if you need to make decisions. BUT, please remember this “a good lens or camera is the ones that you already own” This is not A MUST if you are a hobbyist, but I need it because I work as a full time photographer, the Yongnou is not suitable for low low light such as a meeting room or evening/ night event. Please don’t waste your money for a little better. Cheers 📸🤪
Backlog Photographer 