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Messages - mjbehnke

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91
Lenses / Re: Your Go To Portrait Lens?
« on: November 23, 2011, 12:42:03 AM »
OK, This might be a little off topic..... I see some of the posts saying that a 2.8 is really a stop slower on a 1.6 crop camera? I'm not sure how you figure that? Doesn't it still let the same amount of light go to the APS-C Sensor as it would a FF Sensor? ...And no, I really am not that smart!!  And this is my next question.... Does the EF-S 17-55 F2.8 suffer the same thing as the EF lenses on an APS-C even though it's made only for the smaller sensor?

Thanks in Advance.
Matthew
neuro can probably explain it better but in simplest terms if you get a lens that works on both FF and crop let say a 17-40 f4L then fit it to each and frame the shot exactly the same so that both images filled each cameras view to the same extents. You would be standing closer to the subject using the FF and further away using the crop. Because you are closer to the subject you will have a shallower depth of field than the same lens taking the same shot on the crop since using the crop you are further away.

does that make sense?

since the EF-S 17-55 f2.8 only works on a crop body it behaves more like the 24-70 f2.8L so they are compared more to each other. So the 17-55 f2.8 doesnt suffer from anything


OK, That makes sense, since the 1.6 crop factor "brings things in closer" than shooting with a full frame......

Thanks very much for the Simple Terms!

92
Lenses / Re: Your Go To Portrait Lens?
« on: November 23, 2011, 12:38:50 AM »
Well.... This is one:

[/quote]
So...just as the 'crop factor' affects the effective focal length, it also affects the DoF - by the same 1.6x.  That means that for the same framing you'd get on FF, an f/4 lens on APS-C is equivalent to f/6.4 on FF.  That means very poor background blur unless you are very close to your subject and the background is well-separated.  Not that it can't be done...it's just not ideal.
[/quote]

If I am understanding it right, F4 on a Full Frame is about F6.4 on a APS-C? So, to truly get down to F2.8, I should go FF?  And the other part was, the EF-s 17-55 F2.8, is it like F4 on an APS-c, or is it trult F2.8?

Maybe I need to get to a website that explains this better..... 

93
Lenses / Re: Your Go To Portrait Lens?
« on: November 22, 2011, 11:18:05 PM »
OK, This might be a little off topic..... I see some of the posts saying that a 2.8 is really a stop slower on a 1.6 crop camera? I'm not sure how you figure that? Doesn't it still let the same amount of light go to the APS-C Sensor as it would a FF Sensor? ...And no, I really am not that smart!!  And this is my next question.... Does the EF-S 17-55 F2.8 suffer the same thing as the EF lenses on an APS-C even though it's made only for the smaller sensor?

Thanks in Advance.
Matthew

94
Lens Giveaway Contest / Re: Contest Announcement!
« on: November 16, 2011, 09:58:19 PM »
Quote from the Main Page of Canon Rumors on the photo contest for the above posters:
>>On November 25, 2011 I will present the 10 finalists in each category. I have increased the number to get a >>better range of photographs to be judged.

Presenting the 10 finalists means Posting. :)

95
Lenses / Re: The price 300mm 2.8 IS--is just greed--maybe?
« on: October 25, 2011, 09:08:02 AM »
So.... What are you trying to say? You can't afford one and canon needs to drop the price so you can?

>6.  There are some of you that will pay anything for a L lens, but I'm  not one of those guys.  Professional >photography is going through a huge metamorphosis right now.  It's too easy to take great pictures, and I've >met more that a few Doctors, and Software engineers who basically went out and spent 40 grand on equipment >and take great pictures.
................ And that's a problem???

Not sure what you are really saying? I borrowed many "L" lenses and some of those photos were pretty bad. You know, A Lens is only as good as the person using it. If you think that a person who Buys an "L" lens is going to be a better photographer than you, then you don't understand photography.

hmmmm

96
EOS Bodies / Re: New DSLR on Tuesday, October 18, 2011. [CR3]
« on: October 12, 2011, 10:41:01 PM »
OK, Don't laugh....... But I saw a post awhile ago that Canon had Patented a form of the Foven Sensor? If this has a new sensor, could it be the Foven type???  So the mention of 18 MP would be .. 54mp as the sensor is three layers. Now, if you pump dual DIGI V's behinf that, do you get a high FPS??

Once again, just my 2 cents worth!

97
I have a very stupid question? If Canon is going to reduce the pro line to a 1Ds and a 5D, and possibly eliminate the Aps-h sensor, could this new 1D Mark V be a mirror-less camera?

Only reason I ask is, the 1D has always been a great high frame rate camera. Making it FF and going mirror-less would make it a pretty high speed fps camera.

Just my thoughts.

98
Lens Giveaway Contest / Re: *Contest* Black & White - Post Here.
« on: October 07, 2011, 05:32:32 PM »
Gabi

99
Lens Giveaway Contest / Re: *Contest* Event Photography - Post here.
« on: October 07, 2011, 02:58:00 AM »
Polo on the green (Raising money for Central Illinois Riding Therapy)

100
Lens Giveaway Contest / Re: *Contest* Event Photography - Post here.
« on: October 07, 2011, 02:57:03 AM »
Peoria,IL Airshow

101
Lens Giveaway Contest / Re: *Contest* Event Photography - Post here.
« on: October 07, 2011, 02:55:35 AM »
Central Illinois Riding Therapy for Special needs children

102
Lens Giveaway Contest / Re: *Contest* People - Post Here.
« on: October 07, 2011, 02:54:06 AM »
Felling Blue

103
Lens Giveaway Contest / Re: *Contest* People - Post Here.
« on: October 07, 2011, 02:52:49 AM »
Michelle

104
Lens Giveaway Contest / Re: *Contest* Creative Lighting - Post Here.
« on: October 07, 2011, 02:51:47 AM »
Lightning Storm

105
Lens Giveaway Contest / Re: *Contest* People - Post Here.
« on: October 07, 2011, 02:50:32 AM »
Zac with sisters

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