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 p.4 #1 · Small Compact Camera A7C2 vs A7CR vs others | |
ruthenium wrote:
As I suspected, you hadn't expressed your thoughts well. We need to be careful about things we say, because when taken out of the context of your particular usage (always wide open at f/1.4, at high ISO), then what you said is LITERALLY incorrect: ""Larger sensors simply collect more photons, has better SNR... One stop more dynamic range means the light has to be twice as bright before clipping highlights, which can save real-world shots... especially at high ISO where dynamic range collapses."
Note that it is the "light-gathering" ability of an f/1.4 lens that allows the sensor to "collect more photons." The sensor plays no immediate role in this.
There is an interesting difference between some full-frame and cropped-sensor cameras.
I recently returned to shooting my Sony A1, after 1.5 years of shooting two micro-four-thirds cameras (OM-1 II and G9 II) almost exclusively. One thing that struck me was that the IBIS of A1 allowed me to use the longest SS at about 1/4s in the wide-to-normal range (20 - 40 mm), whereas the IBIS of the OM-1 II allows shooting hand-held with SS as long as 2s, routinely. The practical implication of this is that when I can shoot the OM-1 at the base ISO 200 and SS 2s, the equivalent ISO on the A1 should be 800, however, the need to increase the SS to 1/4s (without a tripod) requires either (a) increasing the ISO to 6400, or (b) opening the lens by 3 stops. In this latter case, for example, if the aperture on the OM-1 is f/2 --> equivalent to f/4 on the A1, then the lens on the A1 should be opened to f/1.4 to allow shooting with the A1 at SS 1/4s and ISO 800. The amount of light delivered to the FF and MFT sensor is going to be the same, however, the MFT camera should give more DOF - that may or may not be desirable, that depends on whether one is shooting a landscape or a portrait, and whether the background is important or not, etc. The practical point of this example is that the smaller sensors typically have better IBIS, and this presents certain advantages for low-light shooting without a tripod.
I came to think about cropped-sensor cameras and FF cameras as complimentary, rather than competing systems. In practice, an experienced and creative photographer may want to have more than one camera system and explore the respective strengths of these systems. There are also personal circumstances that can make a cropped-sensor system more suitable for some, for example, as we age and become frail, then handling a cropped-sensor system may become much easier than a FF system....Show more →
ruthenium wrote:
I came to think about cropped-sensor cameras and FF cameras as complimentary, rather than competing systems.
This is true, I too shoot APSC and FF. If someone asks for a camera at the $500, 600, 700 price point I would recommend apsc.
ruthenium wrote:
IBIS of A1 allowed me to use the longest SS at about 1/4s in the wide-to-normal range (20 - 40 mm), whereas the IBIS of the OM-1 II allows shooting hand-held with SS as long as 2s
You like those slow shutter speeds huh. For me, slow shutter usually doesn't work out so well because my subjects move, but here is one that did work. 600mm, 1.6s, SOOC
If the OM2 can do this handheld I would be astounded.
 7IV00239 by acurian, on Flickr
For what its worth I can shoot a 2s exposure handheld with IBIS on full frame. On a wide lens though, not 600mm. I fired a 5 frame burst, the first and last shots did not work out but the middle 3 looked ok. Here is a 100% crop.
 93_04068 by acurian, on Flickr
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