First of all, I will tell you why a specific power of a studio light unit is needed. Then I will go over the technical features of these particular models from Godox. I've been using them for years, so I have a lot to say.
Benefits of 60W Constant Light (Godox SL60):
- relatively low cost
- less weight and dimensions (1.61kg for SL60 versus 3kg for SL 150 II)
- not everywhere you need a lot of power
Where is a 60W source useful?
For shooting in a small room from a short distance, there is no point in a higher power source of constant light.
An example - if you are a streamer and shoot yourself at the monitor, then there will be plenty of such power of key light above you. A more powerful source will blind you strongly in the eyes and this is not necessary.
If the source is used not as a drawing source, but as a backlight or modeling source, in a small room, then even 60W will be a lot. The backlight / modeling light is set to 1/5 - 1/10 of the power of the main key light. In addition, for backlight, you can use a source without a modifier, which gives more headroom.
Regarding modifiers, if you have a standard softbox/octabox up to 90cm or an umbrella, then for shooting one person waist-deep from a short distance, 60W will be enough.
Therefore, 60-watt light covers a fairly wide range of blogging tasks and more. Although in general, these are the most low-power sources among studio units.
Benefits of 150W Constant Light (Godox SL150II):
1) Suitable for full-fledged work in studios with an area of about 40 sq.m.
2) You can use modifiers with greater light loss (with honeycombs, large sizes)
3) It is more convenient to use with other light available, easier in terms of light isolation
4) It is easier to achieve light contrast relative to the background
The first thing to consider when choosing a light source is room dimensionswhere it will be used. A 150W constant light source will allow you to use larger diameter modifiers and thus illuminate a larger area. While for small rooms this is not necessary and excessive.
The next nuance - high power allows easier to work with honeycombs. The use of honeycombs absorbs about half the power of the source.
The large power of the device allows you to freely use more complex lighting schemeswhere the light source is at an angle and does not shine directly, thus losing power.
On light insulation. Working with constant light always implies light isolation. But the more powerful your source, the more tolerances you can afford. Also, with a 150W source, it will be easier for you to achieve the effect of a darkened background (possible with RGB backlight) relative to the foreground.
In general, a 150W source gives more options. But these features will be needed for advanced work with light. If the task is just to highlight yourself and not bother, then you can get by with a 60-watt source. But when working in a studio, when there is room for maneuver and there are a lot of light sources, then of course it is better to have a power reserve.
When are even more powerful sources needed? (300W or more)
If the task is to shoot a group of people in a large room, the power will go to kilowatts.
If you need to shoot slow-motion with large objects in the frame. If you are shooting a small subject in slow-motion, then you can get by with 150 watts, because. the source will be close enough. The further you need to put the light, the more powerful it should be.
For video filming of a person in full growth on a white cyclorama, which needs to be filled with light, increased power is also needed.
One way or another, a power of 300 watts and above already belongs to highly professional use. For small spaces and relatively simple projects, it is clearly overkill.
Features of using Godox SL60 vs SL150 II
The Godox SL60 has a cooling heatsink right around the LED bulb and the heat is dissipated inside the reflector you put on this unit.
In most cases, this does not affect anything. But to use optical snout or ordinary snoot will be problematic. At full power, overheating occurs very quickly. I have a Colbor CL100 for this task, where the cooling system is in the housing, and not around the lamp.
In general, the permanent light Godox SL60 is made of high quality: a good fastening made of strong plastic, nothing creaks and has not broken in 3 years of use (unlike the aforementioned Colbor CL100, which 2 months later barely keeps on the rack). Godox SL60 is a good thing for the money.
As for the Godox SL150 II, it costs more and you immediately feel what you paid more for. The mount is already metal, plus the arched design of the rack mount itself is more convenient.
Choosing between first version SL150 and second SL150 II, I definitely recommend the second version. The first SL150 features a very noisy cooling fan that will interfere with audio recording. The second version of Godox SL150 II works quietly and is generally made of better quality in terms of design.
By the way, the Godox SL150 II has a cooling system located inside the case, so you can freely use attachments like optical snout.
I also recommend this article: constant light vs pulsed light