Originally posted by inkista GN 92ft / 28m @ISO 100 (50mm)
My first thought was "it doesn't seem too powerful". I expected a GN similar to the V860II models
. I know that maybe by design you could lose some power but...
But I forgot that the GN usually is measured with the zoom at maximum. So I did a quick measure of my Metz 48 & V850 at 50mm, and I got f29 & f25 at ISO 100, 1m. So the V1 has roughly the same GN as the Godox fresnel type V850 speedlights, which is a very good news. Another reference, comparing the AD200 with barebulb and 28mm standard bowl, v850 at 28mm, Metz 48 at 28mm, I measured f45 - f22 - f20. Well, this is just theoretical comparisons, let's wait for Robert to measure the real V1 power.
About preferring or not the round heads on fresnel type: I understand that, just using the flash on camera and pointing forward, you should not notice obvious differences, maybe the light from the round type can be a bit softer because the head is bigger (maybe 1.5 times bigger ?).
But then you have a second use of this speedlight on camera: bouncing light. I see that here the round one could have an advantage. Fresnel heads project a rectangular or rather ellipse-like pattern, and the round heads project a circular or near circular pattern. Well, my point is that this projection will be bigger with a round head, so It'll create a bigger 'virtual' source of light on the wall and so I'll get softer light for my subject. This is comparing the V1 with a V850/V860 at the same settings of power and zoom. I can't know if this difference will be noticeable. And I'm supposing that the projection will be bigger for the V1, it might not be the case.
Finally, as a slave speedligh, I can fill a humble umbrella easily with a round head without needing any extra diffuser. if I want to fill fully an umbrella with a fresnel type speedlight, I need to put some extra diffuser on the fresnel flash. The fresnel can have an advantage on softbox or other rectangular modifiers. This has already been discussed in the thread, I think there is a consensus on this point
Really the points that I like most about V1 are:
* can be a Master, and it seems quick and easy to control up to three remote Godox flashes. The only point that would make me buy this speedlight.
* easier to put modifiers (magnets)
* tilts back!
* Godox will develop a Pentax version... I hope so. If not, I'm not going to buy.
Regards.