Fullframe lenses - softer on crop sensor bodies

[Solarflare]

Thats hard to answer without going offtopic.

I would state that impressing people with photographs is actually very hard.

People as in people who dont know you, only know your photographs. Getting a praise out of people who know you, on the other hand, is almost shockingly trivial.

So a part of this is simply: reviewing gear is simply much easier than making good photographs. Good as in "stands out from the crowd".

 

[runnah]

does anybody actually do photography and make money on it anymore? Seems everyone sells photography gear and talks about it for money instead.

Its easier to criticize than create.

 

[Derrel]

Selling photo education (books, workshops, lessons, training programs) has become a major income source for many people in the photo world. Even people who spread utter B.S. can try their hand at educating. The whole idea Tony is spreading, about f/stops being related to the area of the sensor size--that is a BRAND-NEW, 2015-internet-era line of B.S. that was first seen on dPreview, by one of their multiple, new, junior-level writers.

 

[Overread]

I suppose next it will be AF speed or something that drops by crop factor as well! I mean if the sensor is smaller that means less light and that means the AF won't work as well; by the same factor as the crop factor

 

[robbins.photo]

I suppose next it will be AF speed or something that drops by crop factor as well! I mean if the sensor is smaller that means less light and that means the AF won't work as well; by the same factor as the crop factor

So if I add in a TC on my crop sensor camera I'd better be willing to wait an hour between frames? Good to know.. quick, somebody shoot a video and put it up on youtube.. lol

 

[Derrel]

The people making this argument are trying to use "total light gathered" and crop factors as another format "equivalence" function and in this case pertaining to noise. They're claiming that noise comparisons APS versus FF can be made equivalent by applying the crop factor to total light gathered which can then be expressed hand in hand with the DOF equivalence by focusing on the lens f/stop. In other words the APS image (correct exposure at f/2.8) is noisier than the FF image by the amount you would see if you under-exposed the FF sensor to the same scene at f/4.2 when correct exposure was f/2.8. And, Oh great wonder, the DOF would be the same as well. "I'm so damn clever I'm going to make a Youtube!"

It is true that smaller sensors are inherently noisier than larger sensors: (Clarkvision: Does Pixel Size Matter) because the smaller photosites (pixels) on the smaller sensors gather less light, but this equivalence rubbish expressed as an f/stop variance in the lens is bleepin' nonsense. It's far too complex for the likes of Tony's feeble mind to keep straight and express coherently.

I'm 100% behind Derrel on this one: f/2.8 is f/2.8 is f/2.8 no matter what the lens and camera. The lens f/stop doesn't change when you switch bodies. This whole bleep bleep "equivalence" nonsense needs to stop. It's not helpful. For 30 years I shot film cameras from 8x10 sheet all the way down to 35mm and was often working with 2 and 3 formats at the same time. I never once asked myself, how is this Nikon equivalent to this Rollei? Well in order to get the same shallow DOF with my Nikon that I get with my Rollei my Nikon 105mm f/2.5 is really a 150mm f/4.8 -- never did that. These people have a problem.

Joe

Some of the video low-lights:

1:33 and by 1:45 be prepared for the first dose of fertilizer. "So, you don't get either the, the depth of field, the total light gathered, or the same angle of view, you have to change all of those things.It becomes a very different lens. And I'd like to make the point the focal length probably isn't as useful. I love using 24mm at the wide end..."blah, blah,blah.

6:17 : "Because it's designed for full frame..and you're just losing all that light that's actually coming in, you're not getting the most out of the lens."

6:30 : Comparing the Nikon 24-70 f/2.8 on a D6100 and the D3300 with a Sigma 18-35mm f/1.8: "They both gather about the same total light, so in a given environment you could expect them to have about the same amount of noise." blah...blah,blah...

 

[Tim Tucker]

This is the depth of field you should really worry about:

 

[table1349]

Give one of these to your lense 30 minutes before shooting and all "softness" will go away. And remember if your lens experiences sharpness for more than four hours you should seek medical relief.