FMB

The level of the SL2 images is by far much better (with some exceptions) than the ones seen in SL3 posts. IMHO. FMB

Hello, the big mistake has been to use your camera setting Auto ISO, because in the majority of the cameras this option can't be used with flash (always the camera takes the higher ISO values). Set your camera in manual mode , sync speed, ISO 100, ( then 20 is your Q20 guide number) and G.N./object distance, will be your f/ stop. Francisco.

Not my case, my Bluetooth is always OFF. Francisco.

Thank you for your advice. I'm along the way you suggest at the end of your note. Francisco.

Jaap, SEVERAL OLD BATTERIES seem to be exhausted in a short time when I use them in my SL2. My be is it my camera drainig them when is it off? Francisco

Or to know how much ill is it?. Because only using it in camera is impossible. Francisco.

Is there a simple method to know if one battery is definitive out of order? Francisco

May be the foot of Nissin type flashes dosen't fit in the correct position going further to the frontal in the hot shoe of your camera, without doing good contact. You should pull the unit a little backwards until the first pin blocks the flash firmly on the hot shoe. Something symilar happened to me. Francisco.

Thank you, very much, FMB

It's noy easy. Where to focus? Full power? Which best focal lens for a good results? I did not succide in it. Francisco.

Sorry "Modeling light Off". Frtancisco.

Even without bottom battery, on shoe M 10 at sync speed (1/180) fired. Please check body batteries charge and right polarity. And "modeling S2" green light. Francisco.

Like MASJH, for many years I’ve been using M Leica, starting with the M3. Also, since fourteen, against “my“ essential tremor fighting with all the possible means and looking for acceptable images. As him, I’ve a lot of selected M lenses (Apo Cron 50 mm, Apo Cron 90 mm, .…) and two reliquial R lenses ( Ap Macro-Elmarit 100 mmm and Apo Telyt 180 mm). All of them used with its own adapter first on SL and afterwards on SL2 with very good results, but….”however, a worsening benign essential tremor”, not only to avoid shake but to achieve a better and quick focusing I end up buying Apo Cron 35 mm SL and Apo Cron 90mm SL lenses and I’m not sorry. Francisco.

I reckon that after having read what have been said till now, with big difficulty because my week capacity to understand English, I'm for the moment in a growing mess. First of all, we must consider that the settings to use the flash on M10 and on SL2, in short, only differ basically in the capacity that has SL2 of use it in mode Auto ISO. I think this is not the key of your problem. The second matter to clarify is, and you must accept without any condition, that you must use a flash adopted by Leica software for its cameras. No more alternatives, i40 Nissin, Godox, etc. can’t be used. The third way to follow is accept that, if you want to mix the light of your flash with the ambient light, you should as first step calculate and set the exposure to the level you like for this ambient, (Aperture, ISO and any speed slow or fast not overpassing the one needed for synchronizing the flash). And... Next step, subordinated to the first, is to add the light of your flash to the direction and with the intensity you want to give at your image with same aperture and ISO of the first step and the power you chouse to fill, re-fill zones or shadows or overpass them. - The shutter speed selected for the ambient light doesn’t change the flash exposure but freezes or not the moving elements in scene. - If you want with your SL2 a neutral behavior vs. the one of the M10 camera you must design a customer profile putting your SL2 before it almost in “ex fabric” settings to avoid a lot of options able to modify it. The SL2 is a complex camera that uses autofocus lenses and Speed Mode and it is very easy in a normal managing of it to introduce alternatives orders that should have been cancelled before entering in a very simple procedure like M10 one. It is not easy to drive “a formula one” at low speed. Sorry, very sorry for have been long in my comments…. Francisco

Plus 1. I agree with you about the use of SF24D. I've two units for product photography with both thyristos. Con: Not rotation system.