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    This may be a dumb question, but I'll ask anyway...
    #1
    Senior Member PDX_DVX's Avatar
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    I am borrowing a friends Canon rebel, and I can't seem to get the f-stop any lower than 3.5. Why is this? I tried to find something about it in the manual, but didn't find anything. I don't want my shots to come out blurry, so I want to use a relatively fast shutter speed, but I can seem to open the iris up...
    Patrick LaValley
    www.patricklavalley.com


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    #2
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    I'm guessing it isn't a manual iris lens?
    Do not seek to follow in the footsteps of the men of old; seek what they sought.

    -Matsuo Basho


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    #3
    Senior Member PDX_DVX's Avatar
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    no it's not...I thought you changed iris through the cam?
    Patrick LaValley
    www.patricklavalley.com


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    #4
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    I can't say for Canon but only the newer Nikon lenses will have a digital iris feature. I'm not sure if the older manual Canon lenses are the correct mount or not. I personally dislike the whole digital iris control (It annoys me on the newer Nikon lenses) but that doesn't help you much!

    I have no idea how to change the iris through the camera . Sorry!
    Do not seek to follow in the footsteps of the men of old; seek what they sought.

    -Matsuo Basho


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    #5
    Senior Member PDX_DVX's Avatar
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    Well that's the thing, I can change the iris. I know how to do that, but I can't get it any wider than 3.5. I have no idea why they would limit you from having full control in manual mode. I too dislike this digital iris thing. I have an old pentax spotmatic, and that thing is the balls. Having iris control on the lense is deffinetly a better deal.....
    Patrick LaValley
    www.patricklavalley.com


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    #6
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    Maybe the lens is only capable of 3.5 at its widest aperture setting?
    Do not seek to follow in the footsteps of the men of old; seek what they sought.

    -Matsuo Basho


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    #7
    Senior Member PDX_DVX's Avatar
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    damn lense.....
    Patrick LaValley
    www.patricklavalley.com


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    #8
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    F3.5 is pretty wide open....F22 would be closed. F3.5 isn't letting enough light in for you?

    What is your shutter speed to get the meter in the middle at F3.5?

    BTW...An F-stop such as F3.5 will give you a shallow depth of field...in other words, if the foreground is in focus, the background will be blurry.


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    #9
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    Did you try the other lense? I would assume he let you borrow both of them.

    Also, if you're shooting outside, the iris won't need to go any wider. I was shooting the other day outside at f8 with the shutter speed at 1/1000. Worked beautifully. 3.5 should give you plenty of latitude.
    Jerry Turner
    Camera Assistant
    www.jerry-turner.com



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    #10
    Senior Member dustino's Avatar
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    IF you're using the kit lens, I'm pretty sure 3.5 is the widest ap. And that's fully zoomed out. Fully in is 5.6, I believe. Do you have access to other faster lenses? The 50 mm mark II is only about $75 or less with a 1.8 aperature. Cheap build but very very good glass for such a cheap price. Maybe you can talk your friend into buying it? You can also up the ISO setting to get a faster shutter speed. Gets pretty noisey as you approach the higher ISO's; 1600 is very noisey on my 300d. I've heard the new XT model has much better noise reduction.


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