Before the rush

Before the rush
by evan-pak

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Hot answers tagged

10

STF stands for "Smooth Transition Focus", and is a Sony-specific* term indicating that the lens includes an apodization filter to create smooth bokeh (out-of-focus blur) — and smooth bokeh is generally considered to be the best bokeh. So, you'd generally use it for non-studio portraiture or in other cases where that blur is an important artistic element. ...


8

You can mix & match lenses from different manufacturers, with just a few caveats. Autofocus will work for all MFT lenses on all MFT bodies (that I am aware of). Image stabilization: Olympus does in-body image stabilization (IBIS), whereas Panasonic bodies prior the GX7 and GX8 placed the image stabilization in the lens.† This means that Olympus lenses ...


6

Short answer no - it will be approximately equivalent to the 50mm lens on a full frame camera. What you are referring to are issues of perspective. The perspective is not a property of the lens but is due to the position of the camera relative to the subject. If you are at the same distance from the subject you will get the same perspective no matter what ...


5

In the video, Tony is probably referring to DxOMark's Perceptual Megapixel rating that they developed, because as they say, Most of our readers were not looking at MTF graphs While DxOMark hasn't reviewed the DX 18-55mm ƒ/3.5-5.6G VR II lens yet, here are its 2 predecessor reviews, both mounted on the same D3300 that Tony is reviewing: DxOMark ...


5

Nikon has a very noticable lever just inside the lens mount on the left side (viewing the body without the lens from the front). Photo source: Nikon D5000 DSLR: Announced and Previewed On the lens there should be a matching lever. You can move it and see the diaphragm close.


5

One reason "professional grade" is hard to define is because it's going to get manufacturer's in trouble by setting unreasonable expectations. It's easy, for example, to say that a metal bodied lens is more durable than a plastic composite... but that's not strictly true. The metal body will show dings; the plastic composite won't. The metal body will ...


4

The major manufacturers do not mark lenses as "pro" or "non pro" and they probably have a good reason for that. There are very good professionals that use cheaper "amateur grade" equipment because their back can't handle heavy expensive lenses anymore. There are professional photographers for whom top of the line lenses with latest features are not ...


4

I'm surprised AF works with the 6D! That lens was discontinued at least a decade ago. Being that it does work on the 6D, though, it is disappointing that it doesn't also work on the 70D. Both the 6D and 70D use the Digic 5+ processor and were released about 9 months apart in 2012-13 around ten years after the Tokina AT-X 400 AF was last made. It would be ...


4

Sigma issued an advisory about compatibility with the D5300 in late 2013. They have released firmware updates for lenses that can be upgraded via their USB dock. Unfortunately, the 70-200mm f/2.8 lens is not one of the compatible lenses listed for the USB dock. It appears your lens may not be compatible with the Nikon D5300. Because you can't update the ...


4

Typically, the constant aperture zoom would be sharper. The vast majority of lenses get sharper when stopped down, this includes constant aperture zooms and prime lenses too. So when you stop down an F/2.8 lens to F/4.5, let's say, you get would get an image which is very sharp. The variable aperture lens though would be wide-open at some focal-length and so ...


4

Everything you need to know you can find at Nikon's site for each of those lenses. AF-S DX NIKKOR 18-55mm f/3.5-5.6G VR II Filter size: 52mm (same for lens cap) Hood: HB-69 Bayonet Lens Hood AF-S DX NIKKOR 55-200mm f/4-5.6G ED VR II Filter size: 52mm (same for lens cap) Hood: HB-37 Bayonet Lens Hood


4

The answer is that the pentaprism is actually a roof pentaprism. The image is laterally-inverted (left-right inverted) because the image actually bounces an additional time due to the roof of the pentaprism. Pentaprism diagram from Wikipedia: Single-lens reflex camera, CC-BY-3.0


4

A Canon 50mm f/1.8 prime lens is quite decent for taking portraits from close proximity. The Tokina 11-16mm f/2.8 is a wide-angle lens and would give you significant results when taking the picture of the concert hall from a distance. Both lenses have their own pros for concert photography. The 50mm f/1.8 has the added advantage of taking good quality ...


3

The image forming lens flips the image once. For the imaging sensor, there is one flip. The viewfinder is made up of a fold mirror, the one in the mirrorbox of the camera, a focusing screen, and either a pentaprism or two mirrors. The fold mirror flips the image once, restoring it to "normal" parity. This means there are two inversions in a waist-level ...


3

All other things being equal, yes — mostly. In terms of exposure and depth of field, they would be as close to functionally equivalent as things get in the real world. The shape of the aperture blades will have some impact, so in some cases you could probably tell by looking closely, even if that were the only difference. But in the real world, those lenses ...


2

As Matt's answer says, this is something typically associated with Zeiss lenses that gets argued about on fredmiranda's alt-gear forum a lot. The theory goes that lenses that exhibit a high degree of "micro-contrast", so that the transition from in focus to out of focus tends to be a little more defined give "the pop" more than lenses that exhibit a high ...


2

What should I check / examine / investigate to get this working on my 70D? I'd start by cleaning the contacts on the lens. You know that the lens works because it works on a 6D. While it's certainly possible that the lens is completely incompatible with the 70D, one would expect at least some basic functionality if the lens is working at all. Dirty ...


2

No. You can only get the same look by standing in the same place. Otherwise, perspective will be altered. Nothing you can do with the lens (or camera) can get around that. On a DX format camera, to get an "85mm look" — the look of an 85mm lens on a "full frame" 35mm-format camera, or FX in Nikon terms — you need a lens that's 1.5× shorter to match field of ...


2

The facial deformations you are worried about are due to perspective distortion. Perspective is determined by one thing and one thing only: subject distance. If you take a picture with a 50mm lens on a FF camera from a distance of 10 feet and also take a picture with a 30-35mm lens on an APS-C camera from a distance of 10 feet both pictures will have the ...


2

It will depend a lot on the quality of the adapter you get, but I'd say that it would probably work well enough that if it gives you a significant cost-savings, and you don't mind the possible image quality vagaries of adapting, it's worth trying. As you say, there's no electronic communication to be lost, anyway, and you were already set to manually focus, ...


2

I highly recommend not buying a lens for this wedding (after all, what's more important, using this as an opportunity to build you kit, or ensuring you're delivering a good product to your first customer?), and spending part of that money on renting another identical body, along with one or two lenses for the wedding. Being stuck with a single lens is not ...


2

The resolution of lenses has been deliberated over the years. John William Stutt, 3rd Barron Rayleigh (English scientist Astronomer Royal 1812 – 1842 Nobel Prize 1904). He published the Rayleigh Criterion, the theoretical resolving power of lenses. This study, and method is still valid today. The lens is caused to image ruled lines. The width of the lines ...


1

TL;DR I am afraid that you need to evaluate the lenses individually. Rangefinder an DSLR lenses are often different in construction because both have different design goals and restrictions. RF lenses are often made to be smaller. RF lenses cannot be used from very close proximity, so no corrections or compromises for very close range are necessary. RF ...


1

The image forming rays from the camera’s lens are intercepted by a hinged first surface (reflex) mirror set at a 45⁰ angle. This first reflection rights the upside down image, but, being a mirror image, it is reversed right for left. This image is projected onto a viewing screen. The bottom side of this screen has been roughened by scrubbing it with fine ...


1

The comparisons between the EF 16-35mm f/2.8 L II and the EF 17-40mm f/4 are a fairly mixed bag. It may well be that copy-to-copy variation of the same model is just as great as the difference between samples of two different models as tested by a reviewer. You can also throw the much newer EF 16-35mm f4 L into that mix as well. At some focal lengths and ...


1

I had them and shot them side by side and the 16-35II was hands down better in the ability to clearly resolve and separate details. The color was more lively, too. I think both are great for people photography, but if you want landscapes with perfect sharp corners, you may want to look further. The 17 and 24 T&S lenses are quite good, so are ~20mm ...


1

What exactly “professional-grade” means in Nikon line of lenses? It means nothing. It means nothing because Nikon doesn't designate certain lenses as "professional grade" and other lenses as "non-professional grade". Anyone outside of Nikon who uses such terms is doing so based on their own arbitrary definition, not on a definition of "professional grade" ...


1

The EF 85/1.8 should fit and will work fine for portrait, but on an APS format camera it will require relatively large shooting distance. If you plan shooting in small rooms, walls may prevent you from getting far enough from the photographed person to get enough of their bodies in the picture. 55-250 on a lower end body is definitely not the best ...


1

The Canon T5i can use any lens that is an EF or EF-S mount. The only mount it can't use is the EF-M mount. So to answer the question of being able to use that lens on your camera, Yes you can use the EF 85mm f1.8 USM on the Canon T5i. I cant comment on the quality of the lens as I have never used the lens personally but I suspect it will be decent. You might ...


1

Because Canon doesn't license its mount or give the internal details of the electronic communication to third parties, nearly everyone has to reverse engineer the mount communication signals. So this is the main danger of going with a 3rd party lens (particularly an old one)--that when the lens is new, it will communicate properly, but that with older ...



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