Tag Archives: Field of View

APS-C to Full-Frame Lens Focal Length Crib Chart — Mainly For Sony E-mount Lenses.

by Anura Guruge


Well as I elaborated yesterday,
I have to get my head around this focal-length
‘equivalence’.

Since I am used to thinking in APS-C terms
I needed my own crib sheet just to be on the safe side.

As you can see I am focusing on Sony E-mount
focal lengths.


Click to ENLARGE. Yes, I have an Excel spreadsheet. I can plugin whatever numbers you need THOUGH it is but a trivial exercise in multiplying by 1.5 or dividing by 1.5.


Here is a picture from yesterday IF it helps.

To get the same Depth of Field (DoF) that I got with a 40.7mm APS-C lens,
I would need a 61mm Full-Frame lens.


I needed this to work out what lenses I need to consider.

With FF, anything below 27mm will be WAY TOO WIDE for I!

I am probably better off sticking to FF 50mm and more. {SMILE}


Related Posts:
++++ Check Categories ‘Sony’ & ‘Camera News’ for other related posts >>>>


by Anura Guruge

Getting My Head Around The LARGER ‘Field of View’ (FOV) Of A Full-Frame Camera.

by Anura Guruge


This, for I, is going to get some getting used to.

The irony being that I like tight, close-up shots.
So, my preference for zoom lenses and zooming.

With the Full-Frame Sony a7II 
I will have to stick to ‘zoom’ lenses.

Let me EXPLAIN.


A view of Acadia with a APS-C sensor and a lens at 40.7mm.

I will need a lens capable of giving me 61mm to get that same view.
IF I used the same 40.7mm there will be MUCH MORE scenery in the picture.

That could be good or bad and will affect the composition.

The irony is I like TIGHT compositions.


It gets even CRAZIER when you use a 1/2.3″ camera
such as my beloved Nikon P900.

That is another Acadia view, this time with the Nikon P900,
using 35.7mm focal length.

To get that view I would have to use a lens capable of 200mm
on the Sony a7II.

The Nikon P900 picture is below.


The Nikon P900 picture used above.

You can see that this is quite a nice view.

Yes, I will be able to get this same exact view with my Sony a7II BUT I will need a 200mm lens.

And, yes, I will get a zoom capable of 200mm. {SMILE}


IF you are not really into photography you are going to be wondering what the heck I am talking about.

This has NOTHING to do with resolution, i.e., 12MP, 16MP, 24MP etc.

The Sony a6000 that I just traded in and the Sony a7II have the SAME EXACT resolution; 6000 x 4000 pixels, 24MP.

But, the Full-Frame Sony a7II has a much BIGGER sensor and when it comes to cameras SIZE has always mattered.

A bigger sensor the more light you can get — all other things being equal BECAUSE there is more surface area to capture the light. That is usually the MAIN reason to go with Full-Frame. That is why I am finally going with FF. If you, of course, like shooting wide vistas then FF is a boon.

My problem is that I like tight, cropped shots! So, I really should be NOT getting a FF.

But, all is not lost. It just means that I have to stay at the higher zoom range when it comes to the lenses I use on the a7II. Later today I am going to create a Excel Spreadsheet to help me out.

So to get a 50mm APS-C equivalent shot, I would need a 75mm lens on the a7II.

It just means that I need to be careful not to get anything much below 30 – 35mm FF.

I will sort it out. Just need to get my head around it.

Yes, I can also use APS-C lenses on the Sony a7II but that CROPS the image and that is a whole different issue!


Related Posts:
++++ Check Categories ‘Sony’ & ‘Camera News’ for other related posts >>>>


by Anura Guruge