QUOTE(Uzumaki NaruTo @ Jan 15 2010, 11:02 AM)
Do you really need F20? Why not straight away use F42 (considering F58 is too much). I've read about F20 and it got bad reviews in term of power. Other than the ability to bounce , the power is somewhat equal as you pop up flash. Considering how high your ceiling will be does the power is enough bounce back to your subject? Correct me if i am wrong ya.
if use on iso400 and below, its underpower, with over iso1600 (mainly the A550,700,860,900 bodies), it works fine, it's like increase 2 stop of power.
QUOTE(marauderz @ Jan 15 2010, 11:18 AM)
Increasing Flash compenstation strength in the camera seems to be the key to increasing the F20's power. I guess I should do some systematic testing to confirm that. But I do know that when I step up the Flash fill in stength in the camera the F20 does whirl louder, and it blinds people more.

The other reason is that KMarc is using the camera to take pictures of his kid. Bulky camera + Bulky lens + Bulky flash = LOW Spouse Acceptance Factor. Only with the F20 did my wife finally decide to use my A350 to take pictures last time. She didn't want to hold it with the F32 err.. 36.. the older flash

to clear misunderstanding, if the flash says F20, it's GN20, it max is GN20. even when it at max power, say 1/1, upping the step up flash power, it will still fire at 1/1, it wont go 2/1 power. hahaha

but if the original metering were to decide to fire 1/2, yes, upping the flash power will make it fire 1/1
and yeaaa, the F20 is the factor more girls would use alpha, it's so beautiful.
QUOTE(shootkk @ Jan 15 2010, 12:12 PM)
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On the topic of zoom and prime lens:
Zoom lens:
1. Lets you vary the focal length to suit your composition.
2. Convenient to use.
3. Can cause lazy photog syndrome - meaning you get used to just standing in one place and zoom in/out to snap pic.
4. Usually cannot beat the wide aperture offered by primes.
Prime lens:
1. Cannot zoom.
2. Will force you to move around to find a suitable composition before snapping pic.
3. Large aperture leads to shallow DOF and may cause beginners some frustration.
The thing is, it is way easier to start with a zoom lens but if you rely too much on the zoom, you may find yourself being limited in your creativity.
Starting with a prime is tougher. Prime lenses will force the photog to really move around. Get closer or further away from the subject and try different angles. It works wonders in helping you be creative in your shots. Since you have to move around a lot you will not get numerous shots taken from the same place as you are more likely to get with a zoom.
A large aperture on a prime lens can also lend itself to learning about how aperture affects your DOF and exposure better than a zoom which usually is not too bright except on the widest focal length.
On different focal lengths on primes and APS-C bodies:
Why it is difficult to start with a 50mm prime on an APS-C body? It's because the crop factor will effectively mean your 50mm lens will now give you a 75mm view. 75mm is too long for most application except for portraits.
That's the reason why on APS-C bodies, the 50mm sees much less usage. Try a 30mm prime and things will be much better. 50mm used to be the kit lens in the days of film. Film means that all the SLRs are FULL FRAME thus the 50mm is quite versatile. It can be used to shoot small groups to street shots to protraits too if you can get close enough.
Once you get the hang of it, you may find that zoom lenses hold less attraction for you. Like achew has found, he prefers to use his 50mm, 90mm and 135mm primes. In fact these three primes can effectively replace a 70-200mm zoom range and let you have a better or simliar aperture ratings and is less bulky. Of course the price is that they are less convenient as you have to swap lenses every so often.
If you have the time for lens swapping, I can bet that the primes will net you more creative shots than a zoom can given the same situation.
Prime lenses keeps you on your toes while zoom lenses tend to keep you rooted to one spot. E.g. you are shooting a wedding and you notice that the bride and groom is starting their very first dance as a married couple. You are some distance away from them:
Situation 1: You only have a 50mm on a FF or a 30mm on an APS-C
In this situation you will run to the couple and shoot. As you move around the couple for the shots, you will definitely have shots from a lot of different angles. Maybe some from a lower angle, some from a higher angle etc. You have to keep moving as the lens forces you to do that and at the same time you have to constantly think of how to compose your shots so that they are nice to look at.
Situation 2: You have a 70-200mm F2.8 zoom
You will perhaps move just a little closer and rely on the zoom to bring the couple into the frame. When using the zoom, most of the time you would be in one place and not moving. You shoot, varying the focal length but most of your shots WILL be from the same spot but with VARYING focal length. You cannot get too close as it would be difficult to use the lens. Overall your shots will not have as many different angles and you would most probably have used more tele zoom to remove unwanted background distraction.
Of course this does not mean you cannot be creative with a zoom lens but if you are not careful, a zoom lens can make you lazy because it is so convenient.
well, after 1 month i have my A300, i borrow a km50 1.7, shoot for a week(while waiting for my 50F1.4), since then, i use 50mm only for the next 3 months (and 3 weddings).
i wont say it is easy to use 50mm, nor it is that hard too. but i would use the word, Challenging, really challenging, not knowing what the hell is aperture or F1.4 does to your photo (no matter how much u read on the internet, u never get ur hand on F1.4, u wont know how to use it at all!) and the tight 50mm give u chance to think, to compose, to see in diff perspective, tighter perspective.
anyone(beginner) with a wide would always (subjectively) go as wide as they can, so they could capture EVERYTHING, that what they are thinking.... so wronggg... with 50mm, u learn to shoot just the importance of 'title' or 'action', where it gives impact.
50mm is no wrong, nor right lens to begin or end with. it's just a lens to let u get to know them.
This post has been edited by ieR: Jan 15 2010, 12:39 PM