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michelb last won the day on June 12 2018

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About michelb

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  • Birthday 11/17/1956

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  1. If their designation on the lens does not mention "DT" it will be full frame
  2. If you select ILCE7RMII, the lenses that do not indicate full frame are the ones that have DT in their model designation like i mentioned. The Minolta A-Mount lenses were almost all full frame except for the 3 i listed in my previous post. Sony had a better selection of DT lenses since they were developing the line but these also have DT in their model names. So in that page , if you only look for the ones with a small square that says full frame. You will notice almost all Minolta lenses do not mention this ( i don't understand why) but they do and many have a clone in the Sony that are mentioned full frame ( 16 Fisheye, 20mm, 28mm F 2.8, 50mm F 1.4, 300mm F 2.8, 500F8 RF, 50 and 100mm Macro lenses) Sony probably does not want to over-promote the older lenses !!!
  3. Almost all Minolta A-Mount lenses were full frame. The only ones that are APS-C are marked DT and are: - 18-70 DT -18-200 DT - 11-18 DT Same DT marking would apply to Sony lenses that were APS-C but the list would be a little longer There would be a limitation if one used LA-EA1 or LA-EA2 with these FF lenses What chart are you referring to ?
  4. That is what they are designed for in the first place
  5. If you use a 2X tele converter on a lens whose maximum aperture is F 5.6, with a 2X, your max aperture is now only F11. With the kind of limited light coming through the lens, AF is likely to have difficulty finding focus on anything. PDAF needs some light to achieve its phase detection so by having too limited light coming in, the PDAF sensors can not operate properly. This would be even worse as you close down the lens since then, you would limit even more the amount of light coming in and these mirrorless cameras stop down your aperture at your command (not just as you release the shutter) It was the case before with traditional AF SLR's where when using any lens that had a max aperture of F 4.5, AF was unusable since the AF sensors could not operate. And as was the case with SLR's , they all focused at max aperture (stopping down the lens as you released the shutter)
  6. You need Sony compatible triggers and flash ( the C in the model name of your Trigger/flash says they are for Canon) and every camera brand has its own language that is incompatible with one another for proper TTL/HSS/WL operations.
  7. These flashes will only work in HSS when the head is pointed forward as in on camera direct flash. The minute you place the head in bounce mode, HSS is not available anymore.
  8. See quick test pics here: https://www.flickr.com/photos/55173440@N08/albums/72157684437380962/with/36371744820/ You can see the EXIF for each These were taken in bad ligth on A7r
  9. Read the manual on LA-EA adapters: It mentions clearly that the use of A-Mount teleconverters will not work. Some have had some unpredictable success with other brand A-Mount teleconverters (Kenco Tamron for a few) but there is no assurance they will work either.
  10. Show your adapter ( top and bottom) What flash model were you using ?
  11. Apparently the new Macs have issues with USB2 connections. To help, you need to connect USB2 accessories through a USB2 Hub. Iha numerous issues until i tried that and it worked Why don't you just insert the memory card in the computer SD slot ?
  12. The 2 Sigma's mentioned are for APS-C format, so on A7r you will either get the Auto cropping to APS-C with much lower resolution or you will have huge vignetting
  13. 1) No need to put the body in WL mode since you are using manual triggers (unless Alien Bees makes a TTL trigger for Sony that i don't know about). It could actually be a cause for failure since there was no exchange of info between trigger and body and in WL mode, the body will expect an answer from a flash with the proper connectors and if it does not get the answer it is looking for (or no answer as would be the case with manual triggers), there could be no triggering of the flash at all 2) The Sony MIS shoe ( it's official name) is different in that it has contacts at the front of the shoe on your camera body. Sometimes these connectors prevent the flash foot (or trigger foot) from making a connection with the the central contact on the body. Sometimes you need to push as much as you can within reasonable force to ensure the central contact gets proper alignment which is not always easy to establish. Contrary to popular belief, there is no such thing as standard shoe anymore ( Nikon shoe is shorter than Canon and Sony with these front connectors are a pain to use with some standard triggers) and this is often cause of erratic behavior of flash when adapting or using manual flashes from different manufacturers
  14. When french magazine Chasseur d'Images tested this lens a while ago ( just after its introduction) , they noticed this weird behaviour and were supposed to follow-up on it but i never saw an update.
  15. No you need MD to NEX adapter. It should be less expensive since it won't have the aperture closing mechanism on the adapter
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