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 p.28 #8 · Pre-order: Sigma 24mm f/3.5, 35mm f/2 and 65mm f/2 DG DN lenses | |
imagesfromobjects wrote:
Transition zones are going to be really important for the 24mm. For environmental portraiture and street photography with people, you are going to be shooting between 1m and 3m, otherwise the subjects will be too small in the frame. 1m on 24mm FOV will cover approximately a full-body shot of a kid, or a head-and-torso of an adult. At f/3.5, that's going to give you <2 feet total DOF, so the transition will begin almost immediately after the subject. At 2m, you're going to have about 6 feet DOF coverage, so the transition zone will pretty much dominate the background. Any excessive structure is going to be difficult there, for any lens.
Fortunately, the shot of the woman walking up the steps (shot at f/5.6) looks really promising if you zoom in on the rocky/grassy area by her foot. Either way, I'm definitely going to pick one up. It's a no-brainer for my fp. Yeah, mayyyyybe a little bigger than I was hoping, but still will make for a compact setup....Show more →
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Fred Miranda wrote:
It's interesting that most official samples are close-ups. I guess we will know more when we try it out and start shooting at 2m to see what's up.
I agree that the transition zone is particularly crucial for this lens since it will show behind the subject when shooting at mid-distance -- and without the help of blur to hide any possible roughness.
If it complements the 45/2.8's look, it could have nice rendering without much blur which is great for traveling.
I actually don't disagree with you two and we might be able to reveal the problems in 24mm images. I don't think I spend enough time to explain what is in my mind. (for my personal case though)
Here are some further discussion on this topic.
First of all, 45mm at f2.8 will give about the same amount of blur of 32mm f2. (almost identical to RX1's wider than 35mm lens) This will give a tough blur requirement and tons of case require background in my Lightroom lib for this focal.
for 24mm, the bokeh we are talking about and user case is in a different zone now.
1. You want blur at this focal, you might need go to faster glass at least f2 or say 24mm f1.4 unless do macro.
2. Most lens stop down to f3.5 or f4, things will smooth up a lot naturally (this is the advantage 45mm has over other ones compare against it) and that is why we naturally no longer talk about rendering for slow wide lens. Not that there is no difference between lenses in this focal but just not as a priority. (again, maybe just for me)
3. The DOF we use here is mainly for reasonable sharpness. The background blur of wide angle at f3.5 will be very different than a 35mm f2 or 50mmf1.4. The good looking and poor looking one tend to converge here. Don't let me prove it  Let's go extreme, we never really talk about rendering of Leica 21mm SEM 
4. Again, user case, for me, 24mm is starting point of 2470mm and end point of 1424 zoom. I do use them a lot, check my library, maybe 90% is deep dof stuff. For family image with story, usually are person with landscape or cityscape as background as well, even not deep DOF, the background seem still clear visible that not blur. I really have hard time to differentiate the rendering difference say between14-24mm and 24-70mm Nikon zoom at 24mm, even at f2.8. Take a shot at f2.8, you can see yourself at what distance, you start seeing bokeh and will you put your human subject in that distance?
I also have to admit I am into a different thinking after having FP in hand. I want a lens cap for a "lens cap" I bet many Sony A7C users would want the same.
Now back to rendering, transition zone is just one of the character. It is not like we have to evaluate this to differentiate lenses, otherwise we can't see the difference say between this sigma and Sony 35mm f1.8? There are many other problems out there. I see "tons" of difference in those samples between 35mm lenses out there. Just this thing require lots of times and experience and attention to know. you must care this first. To some, they are small, non-exist or doesn't matter. To me it could be a go or no go, simple as that. This sigma set might have transition problem here or there, but as mentioned, after initial samples, I get enough information already. if nitpicking, I wish both 35 and 65 can have a little bit more SA WO, it will smooth out face a lot, they both seems too pop for my taste but not a show stopper. For lens like samyang, I don't even care about rendering, the sample variation and build qualify are already enough to turn me around, but that is just me.
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