Sony A7IV HD Crop Mode | The Secret To A Sharper Image?
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- Опубліковано 24 сер 2024
- #Sony #A7IV #CropMode
I test to see wether the crop mode produces a better HD image than when shooting full frame.
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When shooting in crop mode, you reduce the field of view but your focal length remains unchanged. To get an equivalent field of view, you would have to place the camera further away from the subject. As the distance to the subject increases your depth of field increases (exponentially) thus the extra sharpness could be a function of the lens and not the camera. Google "depth of field formula" to see the formula.
Compensating for this can be done in several ways but each would introduce further basis in your testing.
- Use a different lens to get an approximately equivalent depth of field
- Shoot at the same distance from the subject and crop (don't zoom) the portion of the frame that is similar. Then compare the same portion of the frame.
Otherwise, an interesting argument but the comparative cost difference of full frame vs APSC still makes the A7IV a VERY expensive APSC camera - you might be better off with the a6XXX series.
Keep up the work!
Yeah the lens crop could be making the difference, although I do think for HD there is a noticeable difference between crop and full frame, it’s not noticeable when comparing 4K images.
I still think the A7iv offers a lot over a A6600 series camera. Better colour science, autofocus frame rates and codecs not to mention you can shoot full frame photos and video when you need to.
The FX30 might change that a bit however it looks like it will be priced in line with the A7iv
Was planning to make this video about the a7iv. Other points could be rolling shutter in crop is no problem either
As long as you don’t call it haych D
This video made me feel better about the lack of 4K 120 for wildlife. I started using crop mode, and it is beneficial for detail and reach. Thanks.
very informative video. thanks a lot!
Very interesting point of view, thank you.
I think what 4k crop mode has an advantage of against hd crop mode is about resolution. Looking at the two footages at the same small scale display will most likely not show any differences but if you play the 1080 footage on a larger scaled display/monitor, the 4k will always win. But having this hd crop mode is still a good option in some cases.
Fantastic video Jonathan! Thank you for your effort you put in. I honestly thought about getting an FX30 for the 120fps in 4K. But now I think that I'm more than happy with the HD crop in terms of sharpness. I even think about getting the Sony 11mm 1.8 + 16-55 2.8 G (both exceptional sharp lenses) and see the A7IV as a crop-cam with ff-potential (depth-of-field e.g.) whenever I need it. I have to do some real-estate-jobs soon and I think the HD-crop-mode + the 11mm 1.8 is the perfect combo for that! Greetings from Germany!
Right! Can you get then the 120fps using that crop mode trick? Please say yes! :D
I believe the HD crop mode is downsampled from 4.6K just like 4K crop mode.
THIS WAS A SUPER GOOD VIDEO I will definitely use your advice on this one.
great review Jonathan, A7IV is a fantastic camera
what about vs fullframe 4k vs crop mode hd?
I previously owned the fx3. I’ve now got the a7iv. I think the HD image of the a7iv is on par with the 4K image from the fx3. Further to that as you know the 4K 25p on the a7iv is of the charts for sharpness. I’d apart from the shallow depth of field in crop mode I see no advantages to the Fx3. As a bonus I bet shoot*ng in hd crop mode would eliminate any fears of overheating. ( I’m guessing- I haven’t checked) thanks for the video.
Yes the A7iv is crazy sharp in 4K 25p.
4K 120p, no crop and the fan are really the only advantages the FX3 has, I find that just about worth it for myself however can totally see it's not needed for alot of people.
Shooting HD does seem to solve the overheating.
Just a thought, imagine if they released a FX version of the A7iv, basically adding the fan and xlr. That would be an awesome affordable camera.
The HD crop mode looks perfect for me as I have a couple of Youngnou 35mm and 50mm Nikon F mount lenses I would use on the Sony A74.
Would the result be similar for A7C as well?
I really like your video and the effort you put into it.
There is a thing, at least in my case.
I tend to mix my FX 9 hd (cinetone) with my A7iv (also hd cinetone) and it matches really well. I like the softer, cinematic look and personally the shots don't need to be as crisp as a small sensor phonecamera.
I guess you could add a bit of sharpness in post if needed.
But good to know that there is a way to create even sharper image with the A7iv.
It might be a Sony thing by the way. On the FX9 the slightly cropped 5k fullframe readout is also better/more sharp than the no cropped 2k ff.
Very useful info! I just recently bought mine. I wanted to ask, so how can I 'manually' crop it from HD? Sorry, I'm a beginner. 🙏
how is the HD crop lose on a7c ? does it perform in the same way as it does on a7iv ?
Crop sensor?! Isnt a beast full frame cam?
Thanks for the video. I think the crop mode has less auto focus points than the Full full frame mode. Now does not find the numbers. Would be nice to see also the ISO test between crop mode and full frame mode? Also the overheating comparison.
That's an interesting thought. I guess there would be less focus points as your zoomed in so perhaps there's a compromise on autofocus.
Overheating should be less of a concern you'd hope as you're using less of the sensor. That said I don't know if the rest of the sensor 'turns off' when in crop mode.
@@JonathanPalfrey Found it from the specs: "Full frame: 759 points (phase-detection AF), APS-C mode with FF lens: 713 points (phase-detection AF), with APS-C lens: 575 points (phase-detection AF) / 425 points (contrast-detection AF)"
@@mitrihakkinen6498 Interesting. I'll investigate that more. From shooting I crop mode I've not noticed the autofocus being any worse than full frame but it will be interesting to see if there is a noticeable difference.
Crop mode would have the entire frame covered in af points. Only thing I’d the af points would be slightly larger in compa to ff
The rolling shutter is also far far better in crop HD. Like otherworldly better
I've noticed that too. It's almost best to treat the A7iv as a APS-C camera which has the ability to go FF when needed.
Thanks for a very interesting item. With the Ninja Star no longer in production is there an alternative light weight solution for recording hi data rate 1080 50i in ProRes 4.2.2 or DNX120?
Brilliant video! I had been shooting real estate in 4k 60p (cropped of course) and now I'm realizing that's been overkill. Excited to test this out.
What setting do you use to get better quality full hd 120 FPS video? I really don’t see a quality improvement on my a7 iv footage when it comes to 120p APS-C mode, although there is a mass quality improvement for full hd 30 and 60 frames.
Did you find any answer to this? I’m also curious about it
How do you do it?!?!?!
Useless videos like these makes me so angry. If you don't specify how much sharpening is applied in your PP then it's useless. For this test to have any meaning you'd need to make sure that the sharpening is set to -7. Otherwise the improvement we're seeing could just be that the cropped mode applies the sharpening differently.
will this be the same for older FF sony cameras like a7sii, a7iii ?
Does the image stabilization do a better or worse job in Crop vs full? (especially when using oss native lenses)?
This is a very good question !
I’m just wondering what hache D is
Hello everyone, what is your experience about Sony A7IV overheating? I would be very happy for your experience. Many greetings
Does this work for the A7C (A7III sensor) as well? Awesome video btw. Insta-liked!
Thanks. Sorry never used the A7C so not sure. You might find it looks better as it’s downsampling less than full frame which clearly does line skip in the A7iii even in 4K.
I wonder if I could find a used body only Sony A74 in London Uk
If I can mimic the Skyfall colour grade with the Sony A74 in 1080HD 10bit via Neutral picture profile and S Log 3 I will be happy
does 1080 p cropped 120fps has active steady Ibis ?
im interested if the same is true for a7iii
Good info. I do feel, however, we lose perspective (pun intended) on this issue. If absolute clarity of image is the goal, then this discussion is valuable. However, if one is telling a visual story, then the differences in images as presented here are not noteworthy. In other words, a quite good image is enough for many, if not most, situations.
Does the same thing happen in photo mode?
Is the 120p HD 422 10 bit?
Yes but does lose sound if I’m not mistaken
I'm looking at moving up to this camera from the A6600 because the 1080 crop is so much better than the 1080 on the A6600. I stopped shooting 4k for run and gun because the rolling shutter makes it impossible to stabilize some shots but 1080 is way to soft on the A6600 so it's time for a new camera. I'll either shoot the a74 in crop or get the a7s3 but the a74 would save me $1000 as well as the cost of new lenses.
My question is, can I use my crop lenses? They're cheaper and offer a wider range of focal lengths so id like to use them and run it as a crop sensor video camera.
Yes you can, you can treat the A7iv as a crop sensor camera effectively especially for video.
I am curious what Sony did with the 1080HD Crop Mode on the Sony A74. What processor magic did they do. I wonder if they will do a firmware update where that sauce will transfer to the 1080HD full frame mode
I don't think it's any magic, just the downscaling compared to line skipping.
The A7iv isn't able to read the full sensor fast enough for 60p, hence the crop in 4K. I'd imagine the only reason it works in 1080 is because it's line skipping, hence the softer image. When shooting cropped 1080 its probably taking the full 4K read out and then downscaling hence the sharper image.
@@JonathanPalfrey With what you said makes me want to film using the crop mode on the Sony A74 in 1080HD.
So just use the super 35 feature while shooting in HD?
Seems to help. However I do use full frame too as sometimes focal length and depth of field matters more.
Hello, my Sony zve10 is crazy sharp at 4K25p. can i get similer sharpness when using 4k crop mode at 60p?
90% of this sharpness you think you're seeing is up to how much sharpening filter you have turned on, unless you specify that you are using -7 sharpness on the camera then you shouldn't use sharpness as a metric for quality
Thats really weird. It must be doing pixel binning in FF
Yeah I’d imagine that’s the case. Quite a bit of processing power needed to go from 7K down to 1080p easier to do it from the centre 4K pixels
Have you had any overheating issues when shooting in Crop Mode HD and Crop mode 4K
No issues when it’s been cropped. Just been shooting this past week in Athens with it and it seemed fine even in direct sun
That is great news. Is it true that you can get 120fps in 4K in crop mode.
And are you going to purchase the Sony FX30. I intend to purchase the Canon R7 and Canon RP Mark 2 if it ever comes out. Also the Panasonic S5 and Panasonic S1H used are on my list I already have batteries for the Canon R7 and Panasonic Gh5s and Nikon D780
How do I get to crop mode!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
There’s a setting in the menu for apsc crop, you can even set it to a button. Alternatively when you shoot 50/60p it will switch to crop
Can I shoot in 35mm mode on the Sony A74 in 1080 hd 120fps
Yeah you can. Best to shoot in S&Q though so you get 10 bit
@@JonathanPalfrey Absolutely brilliant. I intend to use the Sony A74 as a mini Sony FX5 in 10bit 1080HD.
I am gonna use it like the new Alexxa 35
Is this also possible in crop mode ?
You just ruined all of Sony marketing in a bit over 7 minutes.
Shoot in super 35 then put a speedbooster🤪
That would cause a glitch in the matrix!
@@JonathanPalfrey HAHAHAHAHA
But didn’t show how to turn it on. Useless
if you need help with something that simple you probably should find a hobby more suitable to your skill level
What is the point of turning the head left and right in a frontally lit scene like in this "test"? You repeat (and do) many thing without understanding them.
Movement and the the light changes around that area of the scene. That’s where you’l most likely see differences with image artifacts or sharpness especially via UA-cam.