I use to think like you, but experience tells me otherwise.
I dun recommend him to invest in advance cos:
i) Lens technology improve drastically ~ in no times new lens will superceed any current models;
ii) Lens prices drop rapidly these days ~ the EF-S17-55/2.8 is still relatively new with a high price-tag, which I believe, the depreciation on tis lens will superceed the loss when he decide to sell the Tamron 17-50/2.8;
iii) When one recognise his/her style/habbit, he/she will eventually turn to lens which are speciallizing in tat particular field. As we know that, there isn't any perfect lens tat covers all field/subject, one is better left reserve with choices till he/she very sure on his/her needs.
:angel:
I dun recommend him to invest in advance cos:
i) Lens technology improve drastically ~ in no times new lens will superceed any current models;
ii) Lens prices drop rapidly these days ~ the EF-S17-55/2.8 is still relatively new with a high price-tag, which I believe, the depreciation on tis lens will superceed the loss when he decide to sell the Tamron 17-50/2.8;
iii) When one recognise his/her style/habbit, he/she will eventually turn to lens which are speciallizing in tat particular field. As we know that, there isn't any perfect lens tat covers all field/subject, one is better left reserve with choices till he/she very sure on his/her needs.
:angel:
Unless he is just playing with photography for a couple of years and then totally drop it, I see no reason in getting a "less expensive" lens first to develop a style THEN go ahead and buy a similar lens by the OM. Why not just invest once and then forget about it rather than having to deal with selling the "less expensive" lens later which does not retain its value as much?