2nd August 2004, 06:59 PM
Wide angle zooms more difficult to produce than mid-telephoto zoom?
Is it true that wide angle zooms are more difficult to produce than mid-telephoto zoom? I notice that MTF rating of most mid-telephoto zoom like 70-200 2.8 are significantly better than wide-angle zoom like 17-35.
3rd August 2004, 12:33 AM
Does it matter what the reply is? I mean you still need a wide angle even if the MTF ratings are worse than your telephoto right? And frankly speaking, the MTF ratings have very little to do with how the lens actually perform in the field, and what sort of pictures it gives you.
3rd August 2004, 08:52 AM
^^^ True... Regardless, if you need it, a MTF chart is not going to stop you
However, it is true; wides are harder to design and produce. Think about it.
3rd August 2004, 10:51 AM
I would suppose wide angles are harder to produce due to the higher possiblity of distortion, and hence need more care to correct them optically during manufacturing?
3rd August 2004, 11:47 AM
WA is hard, but super telephotos are the most difficult to produce...... Physically, technically, monetarily all very taxing even if you want f5.6....
3rd August 2004, 12:22 PM
Actually, zooms are harder than primes, wide harder than tele (yes, even in very long lenses like >400mm).
Originally Posted by 2100
400mm prime Nikkor has 11 elements, 18mm prime 13 elements, and so on. However, the distortion management and the need to bend the light becomes much harder for wides than teles. Take a look at some diagrams of wide and you will be amaze by how much they have to bend
OTOH, long lenses, though don't have to bend so much, whill have the problem of size and weight of elements to content with
3rd August 2004, 12:29 PM
I guess it's harder to produce. But good thing stuff like 12-24 could be produced at the 1k mark. At least it's f4.5 or f4 there at the 12mm mark.
Originally Posted by Watcher
4th August 2004, 05:09 PM
Of cos i still need a wide-angle. Why do u think MTF rating have very little to do with how the lens actually perform in the field? I do have great respect for MTF rating done by photodo.com.
Originally Posted by justarius
5th August 2004, 04:00 PM