« on: June 30, 2013, 01:20:25 AM »
Many thanks for the links.....
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I did it daily...for many years. I still do it, once in a while...I've got a microscope in my office, and 6 of them in my labs (all Zeiss).
What sort of subjects, what sort of microscope, and is your plan to use a Canon camera adapted to a scope, or something else?
I just think of the bottom line: I really like these images, and see what is possible with this lens in the right hands.
I think that's because it's not an overly popular lens. It's not very high quality anyways but it's rather cheap. I have one myself and i only use it rarely when i go to the zoo..but how often can you visit the same place
It works well for the price..don't expect L lens standard. great for people who don't use telephoto lenses very often and don't want to spend too much on an L.
Anyways, speaking of zoo photos, all these photos are taken with this lens.
I often use Av mode for flash stuff for candids, etc, because it does meter for the ambient. I'll typically set the meter to -1 and then adjust FEC accordingly. Set the ISO manually high enough so that the ambient is about 1/100-1/200. Enable HSS on the flash in case you walk into a brighter area and the shutter speed goes past the sync speed of the camera.
It might be worth checking out the manual to see if you can override the max iso of 400 constraint. Is it only with flash attached, etc? Perhaps there is a setting to remove it.
Hello once again!
My latest work from couple days ago!
EOS 7D - 17-55 F/2.8
- ISO 100
Have a nice day!
If you put your flash on top of your camera (or attach the flash with the camera using an ETTL cable) the camera will recognize the flash fix the shutter speed at 1/200 sec. You can go for a slower shutter speed if you use M or Tv, without any problem. But if you try to go for a faster shutter speed than 1/200th sec (1/250sec in other cameras than 6D) in M or Tv mode you will get a black unexposed part on the frame. To just use your flash as a fill flash you need to reduce the flash power in the flash (or with flash menu in camera). If you want to go for a faster shutter speed than the limiting flash sync speed (1/200) then you need to go for High Speed Sync (HSS) capable flash. There may be other ways of doing it, I do not know. Someone else will probably point you to those directions soon.
Correct. Here a a good video on HSS. It is a PW ad and you do not need PW to make it work when the flash is on the camera. After about 6 minutes it gets into stuff you don't really need to yet unless you are interested.