Question about Cameras
I have a canon EOS t3 rebel dslr and I just received the Opteka LR 1300 HD telephoto zoom lense for my birthday. I am looking for quality settings for my rebel and tips for using a manual focus lense.
There are several reasons why you have to use this lens in manual mode. There is no chip in it and no focus motor. But even if there was a focus motor, your camera could not focus automatically, because the highest lens opening (smallest aperture number is f/1:8 on 1300 mm it is even f/1:16) Your camera only can focus on AF if the aperture is or is smaller than f/1:5,6. For the rest, you should chose the M on your mode dail. and then you can just press the shutter release button. Look on the screen how the histogram looks. If the histogram is to the left, the picture is to dark, so you should choose a longer exposure, if the histogram if far to the right, the picture is to light, so you should choose a shorter time. Have fun.
Posted on Nov 26, 2013
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Posted on Jan 02, 2017
Try turning off the shutter lock.. In my Dynax 7D manual it tells you to turn off shutter lock when attaching to a telescope or microscope this is what this lens basicly is .The shutter lock is turned on and off in section three of the custon menu on my Dynax ,check your manual for your camera to find out where to turn on and off shutter lock, hope this helps
Posted on Jan 27, 2009
Hi Is the 28-70 a DF type if so it will work on a canon DSLR but if its the older one with the scale ring is on the outside of the lens it will need a rechip but I think thay are no longer avabile the 70-300 if is a super it will work or need a rechip if its a older one with a macro switch held on the lens with 2 screws it to old to up grade
Posted on Jan 01, 2010
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