[Foto] Re: Miben masA0 (Canon=A028-80)?=

[Balazs Berkes]

Szia Zoltan!

> Szerintem a 28-80 3.5-5.6 II az nem USM, illetve a photodo
> szerint letezik USM nelkuli valtozata.
> A kovetkezo lencsek vannak 28-80asban, ilyen fenyerovel:
> (photodo)
>
> Canon EF 28-80/3,5-5,6 II USM
> Canon EF 28-80/3,5-5,6 USM
> Canon EF 28-80/3,5-5,6 IV USM
> Canon EF 28-80/3,5-5,6 V USM
> Canon EF 28-80/3,5-5,6 II
> Canon EF 28-80/3,5-5,6 DC
>
> Szoval a kerdes meg mindig all: vajon mi lehet a difi az
> utolso ket objektiv kozott? (A Canon oldalan egyebkent
> (mar) nem szerepel az utolso, DC jelu, csak a felette levo).
>

Passz.

> Letezik, hogy a IV USM csak 2.2 pontot kap, mig a II USM
> 3.1-et????? Akkor most az ujabb objektiv optikailag ennyire
> gyengebb lenne???

http://www.photozone.de/reviews/canon2880.htm alapjan:

> This baby is discontinued since '94 but it's still worth to mention
> because all its sucessors (mk II, III, IV) really suck. The optical
> performance is pretty decent through the range though not as good as
> the older EF28-70/3.5-4.5 (II). Vignetting is relatively good
> controlled but clearly visible with wide-open aperture at 28mm. The
> same goes for distortions. Flare was relatively good controlled.
>
> The lens features a fast ring-type USM motor with FTM (full-time
> manual) control. This is the good news. The bad news is the rotating
> front element which retracts into the lens at certain focal
> length/focus distance combinations. The build quality was not too good
> with my sample.
>
> Verdict: though not too exciting it's probably the last decent
> 28-70/80 consumer grade zoom from Canon.

Nekem USM IV van, azon mar micro USM van, ezert nincs FTM. Kinezetre is
sokkal spartaibb (mar nincs rajta fokusztav-beosztas).

Canon szerint:
http://www.canon.co.jp/camera-museum/lens/ef/ef_lens.html

EF28-80mm f/3.5-5.6 II :

> Developed to succeed the EF28-80mm F3.5-5.6, which was
> marketed in 1993, this compact, lightweight standard zoom
> lens covers wide-angle 28 mm to medium telephoto 80 mm.
> Like the EF28-80mm F3.5-5.6 V USM, it has a metal ring at
> the front of the zoom ring to give it an upscale image. It uses a
> DC motor as AF drive actuator. The optical system and
> controls are the same as those of the EF28-80mm F3.5-5.6
> V USM. For environmental protection, only lead-free glass
> lens elements are used.
>

Konkulzio: szerintem a Canon ketfelet ad el ujan, egy USM-est (ez most
az USM V-os), meg egy nem USM-est  (28-80 II). A ketto - ha hiszunk a
Canonnak - csak a meghajtasban kulonbozik.

Udv: Balazs