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| p.1 #9 · p.1 #9 · Newish to photography and new to Sony cameras! |
Awesome. Thanks for the info! I really appreciate everyones input. When you say "Stopping Down"...for instance...you said invest in a lenses that has a "wide" aperture....so I need like variable one...?
99.99% of lenses allow you to vary the aperture. Typically, zoom lenses have a variable widest aperture, which is why, for instance, your 28-70 says 3.5-5.6. At 28mm, you can open the aperture up to f/3.5, but at 70mm, you can open up to f/5.6 only.
Prime lenses, like the 28mm I discussed, usually only mention their widest aperture (f/2 in this case), but can be "stopped down" quite a bit, usually f/22, though that smallest aperture value can be different.
As the OP noted, not all apertures are equally sharp. In many lenses, the widest aperture will be somewhat softer, especially at the corners of the image. This doesn't matter for stuff like portraits, since you expect those regions to be out of focus, but it will matter for landscapes. Further, you also want more of the image in focus, which also increases with smaller apertures. Which is why you pick something like f/8. Many wide primes show excellent frame-wide sharpness at f/5.6, or f/8 and maintain it for a few more stops further down. Once you know what that value is for a given lens, you can play around to get a better idea what works for what situation.
Example...3.6-5.6....? or just like f/4 and manually adjust the aperture more open....?
An f/4 lens can be adjusted to lower values manually or automatically, depending on the type of lens. Newer lenses all allow the camera to control the aperture, so even the fully automatic modes can do so. Older manual focus lenses usually require you to turn an aperture ring on the lens to change aperture. The end result will be the same, though.
Sorry if it seems like a stupid question...like I said..i'm still learning. Thanks again.
No worries. There are no stupid questions, in the beginning. The worst thing you can do is not ask and make a faulty assumption, so feel free to ask anything!